United States Environmental Protection Agency · Web viewAppendix 3-5. Downstream Dilution Tool Results. Introduction. The Downstream Dilution Tool is a GIS-based algorithm designed

Appendix 3-5. Downstream Dilution Tool Results

Introduction

The Downstream Dilution Tool is a GIS-based algorithm designed to determine the downstream extent of exposure in flowing streams and rivers where direct/indirect effects and/or habitat modification may occur. In Step 1 of the ESA process, the aquatic exposure estimates derived from the downstream dilution tool and AgDRIFT are compared to toxicity thresholds to define the action area which includes the initial area of concern (i.e., immediate area where pesticides are applied) and additional areas that may be affected directly or indirectly by the pesticide application due to offsite transport. The downstream extent of the action area includes the area where the predicted levels of the cumulative percent use area exceed the highest “estimated exposure concentration (EEC) to threshold ratio” ( i.e., the ratio of the highest EEC to lowest toxicity threshold). In essence this provides an estimate of streams where estimated environmental concentrations have the potential to exceed a toxicity threshold. In Step 2 of the ESA process, the tool is used to assess the impact downstream from specified use sites, specific to the label, using taxa-specific thresholds in order to support the weight of evidence and effects determinations. For Step 3, a process is being developed to generate a text delimited file which will list the stream reaches and estimated exposure concentrations EECs in upstream reaches as well as for the streams in the species ranges and critical habitat.

Estimation of Pesticide Use Area and Dilution Factors

The initial area of concern is derived from aggregated and modified sources of land cover information, as described in Attachments 1-3 and 1-6. In addition to the landcover-based pesticide use footprint, the initial area of concern includes the stream segments found within those land cover areas. Stream segments are obtained from the NHDPlus V2 a 1:100K National hydrography dataset for the contiguous United States. For each stream reach in the hydrography network, the cumulative attribute and allocation tool (CA3T) included in the NHDPlus toolkit (http://www.horizon-systems.com/NHDPlus/NHDPlusV2_tools.php) is used to calculate the catchment cumulative percent use area (PUA) for each individual pesticide. The PUA is the total area where the pesticide could potentially be used divided by the total upstream contribution area. Pesticide exposures in the streams within the initial area of concern are conservatively assumed to be represented by the estimated environmental concentrations derived from the Pesticide in Water Calculator (PWC), which are then used in the downstream calculations.

The downstream dilution approach calculates the dilution factor (DF), or the maximum threshold/EEC ratio, expressed as a percentage, which needs to be achieved in order for EECs to fall below the threshold. For instance, if the EEC is 10 µg/L and the threshold is 1 µg/L, then the DF is 10%. The tool uses PUA factors as a surrogate for flow to assess dilution. While the PUA factor doesn’t account for all of the effects contributing to pesticide dilution in a stream (e.g., downstream mixing and advection, degradation, dilution from incoming runoff water that does not contain pesticide), it provides an indication of the ratio of the amount of area in a watershed that could be treated with a pesticide, and hence contribute pesticide via runoff, to the total area of the watershed contributing to runoff. As such, if only 10% of the watershed can be treated with the pesticide, then, conservatively speaking, only 10% of the runoff to the stream in the watershed would contain pesticide and the remaining 90% of the runoff from the watershed would in effect dilute this pesticide contribution.

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The dilution approach uses the NHDPlus dataset for the downstream analysis. After the stream segments in the initial area of concern are identified, the dilution model traverses downstream from each stream segment. At each downstream node, the PUA is compared to the DF. If the PUA for that segment exceeds the DF, the stream segment is included in the downstream extent. The tool continues traversing downstream until the PUA no longer exceeds the DF. For example, in Figure B 3-5.1, the DF would not be achieved until the downstream extent in the southeast corner watershed was reached.

Figure B 3-5.1. Graphical depiction of downstream dilution

As mentioned above, the PUA at each downstream node is estimated by taking the total area of the individual class divided by the total upstream contribution area. For instance, in Figure B 3-5.1, the PUAs for the two northwest catchments were estimated as follows:

PUA1 = 22 A / 100 A = 0.22

PUA2 = 15 A / 100 A = 0.15

For the catchment just downstream, which has a total area of 85 A, the PUA is estimated as follows

PUA3 = ((0.15 x 100 A) + (0.22 x 100 A))/(100 A + 100 A + 85 A) = 0.13

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Use of Downstream Dilution Tool in Step 1

In Step 1, the highest 1-in-15 year peak EEC is estimated from the PWC for all hydrologic unit code level 2 (HUC 2s) for Bin 2 (see Attachment 3-1 for information on aquatic bins) for the rights-of-way scenario (a protective scenario utilizing a high curve number) and the lowest aquatic endpoint to estimate the DF. For each aquatic species, if the downstream dilution tool predicts concentrations that exceed the aquatic threshold for catchments that overlap the species range or designated critical habitat, a May Affect call is made. For diazinon, the highest 1-in-15 year peak EEC is 239,000 µg/L (HUC 15) and the endpoint is 0.044 µg/L (aquatic invertebrates, mortality). For Step 1, land cover data for Orchards and Vineyards, Vegetables and Ground Fruit, Nurseries, and Cattle Eartag use were incorporated into the analyses. Step 1 determinations are provided in Table B 3-5.1. The Percent of Stream Miles Affected reported in the table is the ratio of the stream miles exceeding the threshold divided by the total stream miles in the species range or critical habitat. If the Percent of Stream Miles Affected is greater than 0, then a May Affect determination is made. ESA Taxa assignments can be found in Attachment 1-10. Downstream dilution analysis resulted in a May Effect call for all aquatic species based on their range (398 species) or critical habitat (173 species). It should be noted that the downstream dilution tool was not used to assess impacts to certain aquatic species (i.e., cave dwelling species, offshore marine species, etc.); these species are being addressed qualitatively in separate parts of the Biological Evaluation (Chapter 4, Sections 6.2 through 6.4).

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Table B 3-5.1. Step 1 determinations for diazinon based on downstream dilution

Entity ID Species Common Name ESA Taxa No Effect / May Affect

Percent of Stream Miles Affected

Range7 West Indian Manatee Marine Mammals May Affect 27%17 Salt marsh harvest mouse Marine Mammals May Affect 51%29 Rice rat Marine Mammals May Affect 22%67 Whooping crane Aquatic-dependent Birds May Affect 77%84 Yuma clapper rail Aquatic-dependent Birds May Affect 54%88 Short-tailed albatross Aquatic-dependent Birds May Affect 40%91 Eskimo curlew Aquatic-dependent Birds May Affect 82%96 California least tern Aquatic-dependent Birds May Affect 68%102 California clapper rail Aquatic-dependent Birds May Affect 63%103 Light-footed clapper rail Aquatic-dependent Birds May Affect 30%124 Wood stork Aquatic-dependent Birds May Affect 41%125 Audubon's crested caracara Aquatic-dependent Birds May Affect 22%130 Piping Plover Aquatic-dependent Birds May Affect 25%131 Piping Plover Aquatic-dependent Birds May Affect 60%132 Western snowy plover Aquatic-dependent Birds May Affect 54%134 Least tern Aquatic-dependent Birds May Affect 70%135 Roseate tern Aquatic-dependent Birds May Affect 17%136 Roseate tern Aquatic-dependent Birds May Affect 22%139 Golden-cheeked warbler (=wood) Aquatic-dependent Birds May Affect 91%152 San Francisco garter snake Aquatic Reptiles May Affect 62%157 Green sea turtle Marine Reptiles May Affect 14%158 Green sea turtle Marine Reptiles May Affect 5%167 Atlantic salt marsh snake Marine Reptiles May Affect 25%168 Alabama red-belly turtle Aquatic Reptiles May Affect 81%169 Flattened musk turtle Aquatic Reptiles May Affect 98%171 Ringed map turtle Aquatic Reptiles May Affect 96%

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172 Yellow-blotched map turtle Aquatic Reptiles May Affect 96%173 Eastern indigo snake Aquatic Reptiles May Affect 34%176 American crocodile Aquatic Reptiles May Affect 13%180 Copperbelly water snake Aquatic Reptiles May Affect 95%182 Bog (=Muhlenberg) turtle Aquatic Reptiles May Affect 94%187 Giant garter snake Aquatic Reptiles May Affect 43%189 Texas blind salamander Aquatic Amphibians May Affect 100%191 Desert slender salamander Aquatic Amphibians May Affect 88%194 San Marcos salamander Aquatic Amphibians May Affect 100%197 Barton Springs salamander Aquatic Amphibians May Affect 100%202 Wyoming Toad Aquatic Amphibians May Affect 53%204 Arroyo (=arroyo southwestern) toad Aquatic Amphibians May Affect 38%205 California red-legged frog Aquatic Amphibians May Affect 61%206 Chiricahua leopard frog Aquatic Amphibians May Affect 83%207 Mountain yellow-legged frog Aquatic Amphibians May Affect 32%209 Humpback chub Freshwater Fish May Affect 88%210 Cui-ui Freshwater Fish May Affect 73%211 Moapa dace Freshwater Fish May Affect 100%212 Maryland darter Freshwater Fish May Affect 100%213 Big Bend gambusia Freshwater Fish May Affect 39%214 Clear Creek gambusia Freshwater Fish May Affect 61%215 Colorado pikeminnow (=squawfish) Freshwater Fish May Affect 74%216 Comanche Springs pupfish Freshwater Fish May Affect 66%218 Owens pupfish Freshwater Fish May Affect 61%221 Gila trout Freshwater Fish May Affect 51%222 Greenback Cutthroat trout Freshwater Fish May Affect 32%223 Paiute cutthroat trout Freshwater Fish May Affect 86%224 Okaloosa darter Freshwater Fish May Affect 91%226 Pahranagat roundtail chub Freshwater Fish May Affect 100%

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227 Kendall Warm Springs dace Freshwater Fish May Affect 91%228 Fountain darter Freshwater Fish May Affect 100%229 Watercress darter Freshwater Fish May Affect 98%230 Pecos gambusia Freshwater Fish May Affect 75%232 Unarmored threespine stickleback Freshwater Fish May Affect 31%233 Lahontan cutthroat trout Freshwater Fish May Affect 75%234 Woundfin Freshwater Fish May Affect 92%235 Snail darter Freshwater Fish May Affect 93%237 Spotfin Chub Freshwater Fish May Affect 90%238 Leopard darter Freshwater Fish May Affect 97%239 Slackwater darter Freshwater Fish May Affect 100%240 Roanoke logperch Freshwater Fish May Affect 97%241 Pygmy Sculpin Freshwater Fish May Affect 93%242 Cape Fear shiner Freshwater Fish May Affect 100%243 Waccamaw silverside Freshwater Fish May Affect 62%244 Bayou darter Freshwater Fish May Affect 98%245 Scioto madtom Freshwater Fish May Affect 100%246 Slender chub Freshwater Fish May Affect 97%248 Little Kern golden trout Freshwater Fish May Affect 13%249 Bonytail chub Freshwater Fish May Affect 87%250 San Marcos gambusia Freshwater Fish May Affect 100%251 Leon Springs pupfish Freshwater Fish May Affect 52%252 Alabama sturgeon Freshwater Fish May Affect 96%254 Chihuahua chub Freshwater Fish May Affect 30%255 Sonora chub Freshwater Fish May Affect 90%256 Virgin River Chub Freshwater Fish May Affect 91%257 Niangua darter Freshwater Fish May Affect 91%258 Smoky madtom Freshwater Fish May Affect 76%259 Yaqui catfish Freshwater Fish May Affect 86%

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260 Ozark cavefish Freshwater Fish May Affect 98%262 Owens tui chub Freshwater Fish May Affect 64%263 Yaqui chub Freshwater Fish May Affect 86%264 Ash Meadows speckled dace Freshwater Fish May Affect 97%265 Clover Valley speckled dace Freshwater Fish May Affect 74%266 Desert dace Freshwater Fish May Affect 77%267 Foskett speckled dace Freshwater Fish May Affect 3%268 Independence Valley speckled dace Freshwater Fish May Affect 56%269 Cherokee darter Freshwater Fish May Affect 97%270 Neosho madtom Freshwater Fish May Affect 91%271 Pygmy madtom Freshwater Fish May Affect 98%272 Devils River minnow Freshwater Fish May Affect 38%273 Loach minnow Freshwater Fish May Affect 68%274 Ash Meadows Amargosa pupfish Freshwater Fish May Affect 97%275 Desert pupfish Freshwater Fish May Affect 72%276 Beautiful shiner Freshwater Fish May Affect 49%277 Cahaba shiner Freshwater Fish May Affect 99%278 Palezone shiner Freshwater Fish May Affect 96%279 Pecos bluntnose shiner Freshwater Fish May Affect 84%280 Big Spring spinedace Freshwater Fish May Affect 100%281 Little Colorado spinedace Freshwater Fish May Affect 91%282 White River spinedace Freshwater Fish May Affect 78%283 Hiko White River springfish Freshwater Fish May Affect 100%284 Railroad Valley springfish Freshwater Fish May Affect 80%285 White River springfish Freshwater Fish May Affect 100%286 Gulf sturgeon Freshwater Fish May Affect 47%287 June sucker Freshwater Fish May Affect 67%288 Lost River sucker Freshwater Fish May Affect 61%289 Modoc Sucker Freshwater Fish May Affect 25%

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290 Razorback sucker Freshwater Fish May Affect 85%291 Shortnose Sucker Freshwater Fish May Affect 33%292 Warner sucker Freshwater Fish May Affect 44%293 Amber darter Freshwater Fish May Affect 89%294 Conasauga logperch Freshwater Fish May Affect 75%295 Blackside dace Freshwater Fish May Affect 69%296 Spikedace Freshwater Fish May Affect 69%297 Boulder darter Freshwater Fish May Affect 100%298 Goldline darter Freshwater Fish May Affect 94%299 Arkansas River shiner Freshwater Fish May Affect 93%300 Blue shiner Freshwater Fish May Affect 88%301 Bull Trout Freshwater Fish May Affect 87%303 Pallid sturgeon Freshwater Fish May Affect 74%304 Oregon chub Freshwater Fish May Affect 96%305 Delta smelt Freshwater Fish May Affect 53%306 Tidewater goby Freshwater Fish May Affect 61%307 Bluemask (=jewel) Darter Freshwater Fish May Affect 97%308 Duskytail darter Freshwater Fish May Affect 98%309 Rio Grande Silvery Minnow Freshwater Fish May Affect 44%311 Topeka shiner Freshwater Fish May Affect 64%312 Santa Ana sucker Freshwater Fish May Affect 22%314 White sturgeon Freshwater Fish May Affect 98%315 Etowah darter Freshwater Fish May Affect 93%316 Vermilion darter Freshwater Fish May Affect 100%317 Cumberland bean (pearlymussel) Mollusks May Affect 97%318 Purple bean Mollusks May Affect 97%319 Green blossom (pearlymussel) Mollusks May Affect 99%320 Tubercled blossom (pearlymussel) Mollusks May Affect 97%321 Turgid blossom (pearlymussel) Mollusks May Affect 98%

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324 White catspaw (pearlymussel) Mollusks May Affect 100%325 Higgins eye (pearlymussel) Mollusks May Affect 64%326 Alabama lampmussel Mollusks May Affect 97%327 Pale lilliput (pearlymussel) Mollusks May Affect 98%328 Winged Mapleleaf Mollusks May Affect 54%329 Appalachian monkeyface (pearlymussel) Mollusks May Affect 95%330 Cumberland monkeyface (pearlymussel) Mollusks May Affect 97%331 Pink mucket (pearlymussel) Mollusks May Affect 69%332 Birdwing pearlymussel Mollusks May Affect 99%333 Curtis pearlymussel Mollusks May Affect 91%334 Dromedary pearlymussel Mollusks May Affect 97%335 Littlewing pearlymussel Mollusks May Affect 93%336 White wartyback (pearlymussel) Mollusks May Affect 98%337 Finerayed pigtoe Mollusks May Affect 96%338 Rough pigtoe Mollusks May Affect 97%339 Shiny pigtoe Mollusks May Affect 97%340 Orangefoot pimpleback (pearlymussel) Mollusks May Affect 96%341 Ring pink (mussel) Mollusks May Affect 97%342 Fat pocketbook Mollusks May Affect 40%343 Ouachita rock pocketbook Mollusks May Affect 65%344 Rough rabbitsfoot Mollusks May Affect 97%345 Scaleshell mussel Mollusks May Affect 74%346 Tan riffleshell Mollusks May Affect 96%347 Black clubshell Mollusks May Affect 97%348 Southern combshell Mollusks May Affect 97%349 Flat pigtoe Mollusks May Affect 98%350 Heavy pigtoe Mollusks May Affect 97%351 Tar River spinymussel Mollusks May Affect 98%353 Cumberlandian combshell Mollusks May Affect 54%

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355 Cumberland elktoe Mollusks May Affect 98%356 Alabama (=inflated) heelsplitter Mollusks May Affect 91%357 Orangenacre mucket Mollusks May Affect 98%358 Oyster mussel Mollusks May Affect 36%359 Cracking pearlymussel Mollusks May Affect 98%360 Speckled pocketbook Mollusks May Affect 86%361 James spinymussel Mollusks May Affect 24%362 Stirrupshell Mollusks May Affect 98%364 Louisiana pearlshell Mollusks May Affect 87%365 Southern acornshell Mollusks May Affect 95%366 Purple bankclimber (mussel) Mollusks May Affect 93%367 Upland combshell Mollusks May Affect 98%368 Fanshell Mollusks May Affect 97%370 Carolina heelsplitter Mollusks May Affect 99%371 Oval pigtoe Mollusks May Affect 91%372 Finelined pocketbook Mollusks May Affect 97%373 Shinyrayed pocketbook Mollusks May Affect 92%374 Northern riffleshell Mollusks May Affect 95%375 Fat threeridge (mussel) Mollusks May Affect 90%376 Cumberland pigtoe Mollusks May Affect 11%377 Ovate clubshell Mollusks May Affect 98%378 Southern clubshell Mollusks May Affect 99%379 Triangular Kidneyshell Mollusks May Affect 96%380 Alabama moccasinshell Mollusks May Affect 96%381 Coosa moccasinshell Mollusks May Affect 94%382 Dark pigtoe Mollusks May Affect 97%383 Southern pigtoe Mollusks May Affect 97%384 Gulf moccasinshell Mollusks May Affect 93%385 Ochlockonee moccasinshell Mollusks May Affect 98%

B3 (FC)-10



386 Chipola slabshell Mollusks May Affect 85%396 Anthony's riversnail Freshwater Invertebrates May Affect 93%398 Bliss Rapids snail Freshwater Invertebrates May Affect 54%399 Snake River physa snail Freshwater Invertebrates May Affect 64%402 Armored snail Freshwater Invertebrates May Affect 98%403 Alamosa springsnail Freshwater Invertebrates May Affect 87%404 Bruneau Hot springsnail Freshwater Invertebrates May Affect 68%406 Tumbling Creek cavesnail Freshwater Invertebrates May Affect 98%407 Tulotoma snail Freshwater Invertebrates May Affect 99%408 Socorro springsnail Freshwater Invertebrates May Affect 87%409 Banbury Springs limpet Freshwater Invertebrates May Affect 90%411 Lacy elimia (snail) Freshwater Invertebrates May Affect 99%412 Cylindrical lioplax (snail) Freshwater Invertebrates May Affect 99%413 Flat pebblesnail Freshwater Invertebrates May Affect 99%414 Painted rocksnail Freshwater Invertebrates May Affect 99%415 Plicate rocksnail Freshwater Invertebrates May Affect 99%416 Round rocksnail Freshwater Invertebrates May Affect 99%417 Slender campeloma Freshwater Invertebrates May Affect 98%435 Delta green ground beetle Freshwater Invertebrates May Affect 34%441 Hungerford's crawling water Beetle Freshwater Invertebrates May Affect 76%445 Hine's emerald dragonfly Freshwater Invertebrates May Affect 50%453 Comal Springs riffle beetle Freshwater Invertebrates May Affect 100%475 Hay's Spring amphipod Freshwater Invertebrates May Affect 78%477 Peck's cave amphipod Freshwater Invertebrates May Affect 100%478 Nashville crayfish Freshwater Invertebrates May Affect 100%479 Shasta crayfish Freshwater Invertebrates May Affect 87%480 Alabama cave shrimp Freshwater Invertebrates May Affect 96%481 California freshwater shrimp Freshwater Invertebrates May Affect 79%482 Kentucky cave shrimp Freshwater Invertebrates May Affect 94%

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484 Illinois cave amphipod Freshwater Invertebrates May Affect 96%486 Lee County cave isopod Freshwater Invertebrates May Affect 92%487 Squirrel Chimney Cave shrimp Freshwater Invertebrates May Affect 82%489 Cave crayfish Freshwater Invertebrates May Affect 99%580 Colusa grass Aquatic Plants - vascular May Affect 60%677 Cumberland rosemary Aquatic Plants - vascular May Affect 98%807 Little Aguja (=Creek) Pondweed Aquatic Plants - vascular May Affect 74%870 Texas wild-rice Aquatic Plants - vascular May Affect 88%1064 Kral's water-plantain Aquatic Plants - vascular May Affect 95%1199 Louisiana quillwort Aquatic Plants - vascular May Affect 93%1247 Koster's springsnail Freshwater Invertebrates May Affect 84%1261 Noel's Amphipod Freshwater Invertebrates May Affect 84%1358 Magnificent ramshorn Freshwater Invertebrates May Affect 77%1369 Fuzzy pigtoe Mollusks May Affect 95%1380 San Bernardino springsnail Freshwater Invertebrates May Affect 84%1509 Chum salmon Freshwater Fish May Affect 71%1559 Fluted kidneyshell Mollusks May Affect 97%1707 Yosemite toad Aquatic Amphibians May Affect 83%1740 Mountain yellow-legged frog Aquatic Amphibians May Affect 47%1783 Northern Mexican gartersnake Aquatic Reptiles May Affect 79%1849 Meltwater lednian stonefly Freshwater Invertebrates May Affect 84%1897 Clubshell Mollusks May Affect 99%1934 Spotfin Chub Freshwater Fish May Affect 100%2142 Colorado pikeminnow (=squawfish) Freshwater Fish May Affect 86%2192 Dromedary pearlymussel Mollusks May Affect 99%2308 Cracking pearlymussel Mollusks May Affect 99%2316 Yellow blossom (pearlymussel) Mollusks May Affect 99%2448 Steelhead Freshwater Fish May Affect 87%2514 Chinook salmon Freshwater Fish May Affect 71%

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2528 Steelhead Freshwater Fish May Affect 87%2561 Interrupted (=Georgia) Rocksnail Freshwater Invertebrates May Affect 98%2599 Woundfin Freshwater Fish May Affect 85%2767 Stephan's Riffle beetle Freshwater Invertebrates May Affect 88%2842 Steelhead Freshwater Fish May Affect 79%2917 Texas Hornshell Mollusks May Affect 49%3226 Finerayed pigtoe Mollusks May Affect 99%3271 Narrow-headed garter snake Aquatic Reptiles May Affect 89%3280 Zuni bluehead Sucker Freshwater Fish May Affect 76%3364 Rough hornsnail Freshwater Invertebrates May Affect 99%3398 Chinook salmon Freshwater Fish May Affect 68%3497 Roundtail chub Freshwater Fish May Affect 78%3525 Rush Darter Freshwater Fish May Affect 98%3628 Relict leopard Frog Aquatic Amphibians May Affect 79%3645 Rabbitsfoot Mollusks May Affect 77%3654 Steelhead Freshwater Fish May Affect 68%3748 Sequatchie caddisfly Freshwater Invertebrates May Affect 99%3833 Georgia pigtoe Mollusks May Affect 88%3842 Anthony's riversnail Freshwater Invertebrates May Affect 99%3879 Arkansas darter Freshwater Fish May Affect 89%4042 Choctaw bean Mollusks May Affect 96%4086 Neosho Mucket Mollusks May Affect 99%4093 green sturgeon Freshwater Fish May Affect 50%4112 Steelhead Freshwater Fish May Affect 96%4162 Chupadera springsnail Freshwater Invertebrates May Affect 87%4210 Altamaha Spinymussel Mollusks May Affect 93%4248 Grotto Sculpin Freshwater Fish May Affect 98%4274 Steelhead Freshwater Fish May Affect 71%4300 Chinook salmon Freshwater Fish May Affect 68%

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4330 Shortnose sturgeon Freshwater Fish May Affect 63%4411 Alabama pearlshell Mollusks May Affect 98%4431 Pearl darter Freshwater Fish May Affect 95%4437 Diamond Tryonia Freshwater Invertebrates May Affect 52%4479 Phantom Springsnail Freshwater Invertebrates May Affect 66%4490 Spectaclecase (mussel) Mollusks May Affect 97%4679 Whooping crane Aquatic-dependent Birds May Affect 75%4766 Three Forks Springsnail Freshwater Invertebrates May Affect 93%4799 Chinook salmon Freshwater Fish May Affect 86%4881 Smalltooth sawfish Freshwater Fish May Affect 19%4910 Salt Creek Tiger beetle Freshwater Invertebrates May Affect 98%4992 Chinook salmon Freshwater Fish May Affect 86%5065 Black warrior (=Sipsey Fork) Waterdog Aquatic Amphibians May Affect 98%5180 Chum salmon Freshwater Fish May Affect 91%5265 Coho salmon Freshwater Fish May Affect 85%5281 Snuffbox mussel Mollusks May Affect 95%5362 Gonzales tryonia Freshwater Invertebrates May Affect 52%

5386Nevares Spring naucorid bug (=Furnace Creek) Freshwater Invertebrates May Affect 53%

5434 Georgetown Salamander Aquatic Amphibians May Affect 100%5658 Steelhead Freshwater Fish May Affect 36%5666 Page springsnail Freshwater Invertebrates May Affect 87%5714 Kenk's amphipod Freshwater Invertebrates May Affect 97%5718 Cumberland monkeyface (pearlymussel) Mollusks May Affect 99%5719 Cumberland darter Freshwater Fish May Affect 99%5815 Steelhead Freshwater Fish May Affect 69%5819 Columbia spotted frog Aquatic Amphibians May Affect 75%5833 Shiny pigtoe Mollusks May Affect 99%5856 Turgid blossom (pearlymussel) Mollusks May Affect 99%

B3 (FC)-14



5981 Smoky madtom Freshwater Fish May Affect 100%6062 Rayed Bean Mollusks May Affect 93%6138 Phantom Tryonia Freshwater Invertebrates May Affect 66%6220 Steelhead Freshwater Fish May Affect 92%6223 Tubercled blossom (pearlymussel) Mollusks May Affect 99%6297 Gila chub Freshwater Fish May Affect 71%6346 Austin blind Salamander Aquatic Amphibians May Affect 100%6503 Duskytail darter Freshwater Fish May Affect 100%6534 Tapered pigtoe Mollusks May Affect 91%6557 diamond Darter Freshwater Fish May Affect 87%6578 Coho salmon Freshwater Fish May Affect 80%6596 Pecos amphipod Freshwater Invertebrates May Affect 52%6620 Sonoyta mud turtle Aquatic Reptiles May Affect 53%6662 Yellowcheek Darter Freshwater Fish May Affect 98%6739 Huachuca springsnail Freshwater Invertebrates May Affect 77%6841 Slabside Pearlymussel Mollusks May Affect 97%6843 Sockeye salmon Freshwater Fish May Affect 73%6966 Coho salmon Freshwater Fish May Affect 71%7091 Winged Mapleleaf Mollusks May Affect 99%7150 Chucky Madtom Freshwater Fish May Affect 96%7177 Narrow pigtoe Mollusks May Affect 95%7332 Spring pygmy sunfish Freshwater Fish May Affect 91%7342 Whooping crane Aquatic-dependent Birds May Affect 96%7349 Southern sandshell Mollusks May Affect 93%7363 Round Ebonyshell Mollusks May Affect 93%7512 Cumberland bean (pearlymussel) Mollusks May Affect 99%7590 Chinook salmon Freshwater Fish May Affect 92%7610 Salado Salamander Aquatic Amphibians May Affect 97%7670 Smalleye Shiner Freshwater Fish May Affect 96%

B3 (FC)-15



7800 Eastern Massasauga (=rattlesnake) Aquatic Reptiles May Affect 92%7816 Sheepnose Mussel Mollusks May Affect 85%7834 Chinook salmon Freshwater Fish May Affect 92%7847 Ozark Hellbender Aquatic Amphibians May Affect 93%7855 Chinook salmon Freshwater Fish May Affect 61%7949 Southern kidneyshell Mollusks May Affect 92%7989 Steelhead Freshwater Fish May Affect 68%8172 Diminutive Amphipod Freshwater Invertebrates May Affect 66%8231 Jollyville Plateau Salamander Aquatic Amphibians May Affect 100%8241 Chinook salmon Freshwater Fish May Affect 96%8278 Sockeye salmon Freshwater Fish May Affect 78%

8349Purple Cat's paw (=Purple Cat's paw pearlymussel) Mollusks May Affect 99%

8356 Birdwing pearlymussel Mollusks May Affect 99%8434 Black mudalia Freshwater Invertebrates May Affect 99%8442 Sicklefin redhorse Freshwater Fish May Affect 74%8561 Headwater chub Freshwater Fish May Affect 74%8765 Berry Cave salamander Aquatic Amphibians May Affect 98%8921 Boulder darter Freshwater Fish May Affect 100%9021 Coho salmon Freshwater Fish May Affect 92%9061 Spotfin Chub Freshwater Fish May Affect 100%9220 Laurel dace Freshwater Fish May Affect 85%9487 Appalachian monkeyface (pearlymussel) Mollusks May Affect 99%9488 Birdwing pearlymussel Mollusks May Affect 99%9489 Cracking pearlymussel Mollusks May Affect 99%9490 Cumberland bean (pearlymussel) Mollusks May Affect 99%9492 Cumberland monkeyface (pearlymussel) Mollusks May Affect 99%9493 Dromedary pearlymussel Mollusks May Affect 99%9494 Fanshell Mollusks May Affect 99%

B3 (FC)-16



9495 Finerayed pigtoe Mollusks May Affect 99%9496 Orangefoot pimpleback (pearlymussel) Mollusks May Affect 99%9498 Ring pink (mussel) Mollusks May Affect 99%9499 Rough pigtoe Mollusks May Affect 99%9500 Shiny pigtoe Mollusks May Affect 99%9501 White wartyback (pearlymussel) Mollusks May Affect 99%9502 Duskytail darter Freshwater Fish May Affect 99%9503 Pygmy madtom Freshwater Fish May Affect 99%9504 Slender chub Freshwater Fish May Affect 99%9505 Spotfin Chub Freshwater Fish May Affect 99%9507 Anthony's riversnail Freshwater Invertebrates May Affect 99%9969 Smooth pimpleback Mollusks May Affect 89%10037 Bull Trout Freshwater Fish May Affect 96%10052 Rio Grande Silvery Minnow Freshwater Fish May Affect 68%10060 Kentucky arrow darter Freshwater Fish May Affect 99%10077 Atlantic salmon Freshwater Fish May Affect 87%10124 Whooping crane Aquatic-dependent Birds May Affect 65%10130 Arapahoe snowfly Freshwater Invertebrates May Affect 78%10150 Eulachon Freshwater Fish May Affect 79%10297 Atlantic sturgeon Freshwater Fish May Affect 76%10298 Atlantic sturgeon Freshwater Fish May Affect 76%10299 Atlantic sturgeon Freshwater Fish May Affect 76%10300 Atlantic sturgeon Freshwater Fish May Affect 76%10301 Atlantic sturgeon Freshwater Fish May Affect 76%10517 Sierra Nevada Yellow-legged Frog Aquatic Amphibians May Affect 91%NMFS88 Steelhead Freshwater Fish May Affect 78%

Critical Habitat7 West Indian Manatee Marine Mammals May Affect 48%67 Whooping crane Aquatic-dependent Birds May Affect 67%

B3 (FC)-17



130 Piping Plover Aquatic-dependent Birds May Affect 2%131 Piping Plover Aquatic-dependent Birds May Affect 4%132 Western snowy plover Aquatic-dependent Birds May Affect 15%176 American crocodile Aquatic Reptiles May Affect 6%194 San Marcos salamander Aquatic Amphibians May Affect 100%204 Arroyo (=arroyo southwestern) toad Aquatic Amphibians May Affect 48%205 California red-legged frog Aquatic Amphibians May Affect 74%206 Chiricahua leopard frog Aquatic Amphibians May Affect 94%207 Mountain yellow-legged frog Aquatic Amphibians May Affect 29%209 Humpback chub Freshwater Fish May Affect 92%212 Maryland darter Freshwater Fish May Affect 100%215 Colorado pikeminnow (=squawfish) Freshwater Fish May Affect 97%228 Fountain darter Freshwater Fish May Affect 100%234 Woundfin Freshwater Fish May Affect 94%235 Snail darter Freshwater Fish May Affect 100%237 Spotfin Chub Freshwater Fish May Affect 99%238 Leopard darter Freshwater Fish May Affect 100%239 Slackwater darter Freshwater Fish May Affect 100%242 Cape Fear shiner Freshwater Fish May Affect 99%243 Waccamaw silverside Freshwater Fish May Affect 64%246 Slender chub Freshwater Fish May Affect 100%249 Bonytail chub Freshwater Fish May Affect 76%250 San Marcos gambusia Freshwater Fish May Affect 100%251 Leon Springs pupfish Freshwater Fish May Affect 100%252 Alabama sturgeon Freshwater Fish May Affect 100%255 Sonora chub Freshwater Fish May Affect 100%256 Virgin River Chub Freshwater Fish May Affect 94%257 Niangua darter Freshwater Fish May Affect 100%258 Smoky madtom Freshwater Fish May Affect 90%

B3 (FC)-18



259 Yaqui catfish Freshwater Fish May Affect 100%262 Owens tui chub Freshwater Fish May Affect 97%263 Yaqui chub Freshwater Fish May Affect 100%264 Ash Meadows speckled dace Freshwater Fish May Affect 100%266 Desert dace Freshwater Fish May Affect 94%272 Devils River minnow Freshwater Fish May Affect 100%273 Loach minnow Freshwater Fish May Affect 99%274 Ash Meadows Amargosa pupfish Freshwater Fish May Affect 100%275 Desert pupfish Freshwater Fish May Affect 100%276 Beautiful shiner Freshwater Fish May Affect 100%279 Pecos bluntnose shiner Freshwater Fish May Affect 97%280 Big Spring spinedace Freshwater Fish May Affect 100%281 Little Colorado spinedace Freshwater Fish May Affect 100%282 White River spinedace Freshwater Fish May Affect 100%283 Hiko White River springfish Freshwater Fish May Affect 100%284 Railroad Valley springfish Freshwater Fish May Affect 60%285 White River springfish Freshwater Fish May Affect 100%286 Gulf sturgeon Freshwater Fish May Affect 65%287 June sucker Freshwater Fish May Affect 100%288 Lost River sucker Freshwater Fish May Affect 95%289 Modoc Sucker Freshwater Fish May Affect 100%290 Razorback sucker Freshwater Fish May Affect 90%291 Shortnose Sucker Freshwater Fish May Affect 97%292 Warner sucker Freshwater Fish May Affect 68%293 Amber darter Freshwater Fish May Affect 100%294 Conasauga logperch Freshwater Fish May Affect 100%296 Spikedace Freshwater Fish May Affect 99%299 Arkansas River shiner Freshwater Fish May Affect 99%301 Bull Trout Freshwater Fish May Affect 87%

B3 (FC)-19



304 Oregon chub Freshwater Fish May Affect 54%305 Delta smelt Freshwater Fish May Affect 23%306 Tidewater goby Freshwater Fish May Affect 53%309 Rio Grande Silvery Minnow Freshwater Fish May Affect 64%311 Topeka shiner Freshwater Fish May Affect 79%312 Santa Ana sucker Freshwater Fish May Affect 41%314 White sturgeon Freshwater Fish May Affect 99%316 Vermilion darter Freshwater Fish May Affect 100%318 Purple bean Mollusks May Affect 99%344 Rough rabbitsfoot Mollusks May Affect 100%353 Cumberlandian combshell Mollusks May Affect 33%354 Appalachian elktoe Mollusks May Affect 96%355 Cumberland elktoe Mollusks May Affect 99%357 Orangenacre mucket Mollusks May Affect 99%358 Oyster mussel Mollusks May Affect 33%365 Southern acornshell Mollusks May Affect 100%366 Purple bankclimber (mussel) Mollusks May Affect 100%367 Upland combshell Mollusks May Affect 100%370 Carolina heelsplitter Mollusks May Affect 100%371 Oval pigtoe Mollusks May Affect 94%372 Finelined pocketbook Mollusks May Affect 100%373 Shinyrayed pocketbook Mollusks May Affect 100%375 Fat threeridge (mussel) Mollusks May Affect 99%377 Ovate clubshell Mollusks May Affect 99%378 Southern clubshell Mollusks May Affect 100%379 Triangular Kidneyshell Mollusks May Affect 99%380 Alabama moccasinshell Mollusks May Affect 99%381 Coosa moccasinshell Mollusks May Affect 100%382 Dark pigtoe Mollusks May Affect 96%

B3 (FC)-20



383 Southern pigtoe Mollusks May Affect 100%384 Gulf moccasinshell Mollusks May Affect 100%385 Ochlockonee moccasinshell Mollusks May Affect 100%386 Chipola slabshell Mollusks May Affect 100%406 Tumbling Creek cavesnail Freshwater Invertebrates May Affect 96%445 Hine's emerald dragonfly Freshwater Invertebrates May Affect 50%453 Comal Springs riffle beetle Freshwater Invertebrates May Affect 100%454 Comal Springs dryopid beetle Freshwater Invertebrates May Affect 100%477 Peck's cave amphipod Freshwater Invertebrates May Affect 100%580 Colusa grass Aquatic Plants - vascular May Affect 76%870 Texas wild-rice Aquatic Plants - vascular May Affect 100%1247 Koster's springsnail Freshwater Invertebrates May Affect 100%1261 Noel's Amphipod Freshwater Invertebrates May Affect 100%1369 Fuzzy pigtoe Mollusks May Affect 100%1509 Chum salmon Freshwater Fish May Affect 27%1559 Fluted kidneyshell Mollusks May Affect 100%1707 Yosemite toad Aquatic Amphibians May Affect 73%1740 Mountain yellow-legged frog Aquatic Amphibians May Affect 42%1783 Northern Mexican gartersnake Aquatic Reptiles May Affect 88%1934 Spotfin Chub Freshwater Fish May Affect 99%2448 Steelhead Freshwater Fish May Affect 90%2514 Chinook salmon Freshwater Fish May Affect 92%2528 Steelhead Freshwater Fish May Affect 95%2561 Interrupted (=Georgia) Rocksnail Freshwater Invertebrates May Affect 100%2842 Steelhead Freshwater Fish May Affect 93%3271 Narrow-headed garter snake Aquatic Reptiles May Affect 90%3280 Zuni bluehead Sucker Freshwater Fish May Affect 97%3364 Rough hornsnail Freshwater Invertebrates May Affect 100%3525 Rush Darter Freshwater Fish May Affect 100%

B3 (FC)-21



3645 Rabbitsfoot Mollusks May Affect 82%3654 Steelhead Freshwater Fish May Affect 84%3833 Georgia pigtoe Mollusks May Affect 100%4042 Choctaw bean Mollusks May Affect 100%4086 Neosho Mucket Mollusks May Affect 100%4093 green sturgeon Freshwater Fish May Affect 32%4112 Steelhead Freshwater Fish May Affect 96%4210 Altamaha Spinymussel Mollusks May Affect 100%4274 Steelhead Freshwater Fish May Affect 90%4411 Alabama pearlshell Mollusks May Affect 100%4437 Diamond Tryonia Freshwater Invertebrates May Affect 100%4479 Phantom Springsnail Freshwater Invertebrates May Affect 32%4766 Three Forks Springsnail Freshwater Invertebrates May Affect 100%4799 Chinook salmon Freshwater Fish May Affect 59%4881 Smalltooth sawfish Freshwater Fish May Affect 30%4910 Salt Creek Tiger beetle Freshwater Invertebrates May Affect 98%4992 Chinook salmon Freshwater Fish May Affect 94%5180 Chum salmon Freshwater Fish May Affect 96%5265 Coho salmon Freshwater Fish May Affect 89%5362 Gonzales tryonia Freshwater Invertebrates May Affect 100%5434 Georgetown Salamander Aquatic Amphibians May Affect 100%5658 Steelhead Freshwater Fish May Affect 52%5719 Cumberland darter Freshwater Fish May Affect 98%5815 Steelhead Freshwater Fish May Affect 73%5981 Smoky madtom Freshwater Fish May Affect 90%6138 Phantom Tryonia Freshwater Invertebrates May Affect 32%6220 Steelhead Freshwater Fish May Affect 96%6297 Gila chub Freshwater Fish May Affect 98%6346 Austin blind Salamander Aquatic Amphibians May Affect 100%

B3 (FC)-22



6534 Tapered pigtoe Mollusks May Affect 100%6557 diamond Darter Freshwater Fish May Affect 100%6596 Pecos amphipod Freshwater Invertebrates May Affect 100%6662 Yellowcheek Darter Freshwater Fish May Affect 99%6841 Slabside Pearlymussel Mollusks May Affect 100%6843 Sockeye salmon Freshwater Fish May Affect 61%7150 Chucky Madtom Freshwater Fish May Affect 100%7177 Narrow pigtoe Mollusks May Affect 100%7349 Southern sandshell Mollusks May Affect 100%7363 Round Ebonyshell Mollusks May Affect 100%7590 Chinook salmon Freshwater Fish May Affect 95%7610 Salado Salamander Aquatic Amphibians May Affect 100%7670 Smalleye Shiner Freshwater Fish May Affect 99%7834 Chinook salmon Freshwater Fish May Affect 96%7949 Southern kidneyshell Mollusks May Affect 100%7989 Steelhead Freshwater Fish May Affect 95%8172 Diminutive Amphipod Freshwater Invertebrates May Affect 32%8231 Jollyville Plateau Salamander Aquatic Amphibians May Affect 96%8241 Chinook salmon Freshwater Fish May Affect 96%9061 Spotfin Chub Freshwater Fish May Affect 99%9220 Laurel dace Freshwater Fish May Affect 100%9504 Slender chub Freshwater Fish May Affect 100%9505 Spotfin Chub Freshwater Fish May Affect 99%10077 Atlantic salmon Freshwater Fish May Affect 90%10150 Eulachon Freshwater Fish May Affect 95%10517 Sierra Nevada Yellow-legged Frog Aquatic Amphibians May Affect 91%

B3 (FC)-23

Use of Downstream Dilution Tool in Step 2

For each HUC 2, the highest 1-in-15 year EEC for Bin 2 is used for each individual registered use pattern. For HUC 2s with more than one meteorological file, the highest EEC from the two sets of runs is selected. For multiple pesticide uses that are covered by a particular CDL, the highest EEC for the data layer is used. Multiple effects thresholds are considered in the analysis and the lowest threshold, based on the available thresholds for each line of evidence (i.e., mortality, growth, reproduction, behavior, and sensory effects) for each taxonomic group is used. For Step 2 of the downstream dilution analyses, only Orchards and Vineyards, Vegetables and Ground Fruit, and Nursery land covers were considered, as they were the only ones for which EECs were generated. Cattle Eartag use was not included in the aquatic exposure analyses as runoff from this use is not expected.

For each species and each HUC 2, the downstream dilution tool estimates the percent of stream miles in the species range and critical habitat where the downstream dilution concentration is above a particular threshold and the corresponding use pattern that has the greatest impact. Step 2 downstream dilution evaluations are provided for the species range and critical habitats in Table B 3-5.2 and B 3-5.3, respectively, and are used to inform the NLAA/LAA determinations for the species. The HUC 2 column depicts the hydrologic unit code level 2 associated with the analysis and species location. The “Multiple HUCs?” column indicates whether the species can be associated with more than one HUC 2. The Species Range, HUC 2 depicts the total number of stream miles, in the respective HUC 2, in the species range or critical habitat. The Species Range, All HUCs depicts the total number of stream miles in the species range or critical habitat. The Threshold Value column reports the threshold value used in the determination of stream miles affected. Individual thresholds are described in a footnote to the tables. The Use Impacting Species column indicates the modeled data layer that generated the highest impact on the species as reflected in the stream miles affected. In cases where a mollusk with an obligate relationship to a fish had been established, both the mollusk and fish endpoints were evaluated. In these cases, the mollusk is listed twice in the tables, once for the mollusk and once for the fish.

Table B 3-5.4 provides a listing of species where concentrations from downstream dilution were below all relevant species-specific thresholds. In most cases, the species were not located in streams that were hydrologically connected to an upstream segment where a diazinon use (e.g., orchard, vegetable, or nursery) could occur nor were they in streams that could potentially receive direct or spray drift runoff from a pesticide treated field (i.e., no vegetable, orchard, or nursery uses in watershed). If these species do not utilize terrestrial habitats and are not impact by Cattle Eartag use, these species are considered NLAA and are classified as such in Attachment 1-6.

A text delimited file which lists the EECs in upstream reaches, as well as for the streams in the species ranges and critical habitat, is under development for use in Step 3 of the ESA process and will be available with the final BE. It should be noted that the downstream dilution tool was not used to assess impacts to certain aquatic species (i.e., cave dwelling species, offshore marine species, etc.); these species are being addressed qualitatively in separate parts of the Biological Evaluation (Chapter 4, Sections 6.2 through 6.4).

Uncertainties in Analysis

The geographic data sets used in this analysis are limited with respect to their accuracy and timeliness. The CDL represents the most current and comprehensive collection of national crop-specific land use

B3 (FC)-24

and land cover information for the United States. The current analysis considers CDL products from 2011-2014. Additional data sets were included to account for uses not clearly defined by the CDL, such as non-agricultural uses. These supplemental data and associated uncertainties are discussed in Attachment 1-3.

Hydrographic data are from the NHDPlus data set (http://www.horizon-systems.com/nhdplus/). NHDPlus contains the most current and accurate nationwide representation of hydrologic data. At a spatial scale of 1:100,000, the NHDPlus might omit the smallest streams and waterbodies. In addition, in some isolated instances, there are errors in the data including missing or disconnected stream segments and incorrect assignment of flow direction.

The relatively coarse spatial scale and general classification categories of these data sets preclude use of the data for highly localized study. Additionally, some labeled uses are not possible to map precisely due to the lack of appropriate spatial data in the data layers. These labeled uses and their associated uncertainties are discussed in Attachment 1-3.

B3 (FC)-25

Table B 3-5.2. Step 2 Downstream Dilution Determinations Based on Species Range1

ESA Taxa HUC 2

Entity ID Species Common Name Multiple

HUCs?

Stream Miles

Affected in HUC (miles)

Species Range in HUC (miles)

Species Range,

All HUCs

(miles)

Threshold Value2

(ug/L)

Use Impacting Species

Marine Mammals 3 7 West Indian Manatee Yes 19267 73110 112986 0.228vegetables

Marine Mammals 8 7 West Indian Manatee Yes 1934 25145 112986 0.228 orchards

Marine Mammals 12 7 West Indian Manatee Yes 3971 14620 112986 0.228vegetables

Marine Mammals 13 7 West Indian Manatee Yes 111 111 112986 0.47 orchardsMarine Mammals 18 17 Salt marsh harvest mouse No 357 3066 3066 0.228 nurseriesMarine Mammals 3 29 Rice rat No 345 1909 1909 0.228 orchards

Aquatic-dependent Birds 4 67 Whooping crane Yes 39 45 481384 0.47vegetables





Aquatic-dependent Birds 12 67 Whooping crane Yes 29705 79940 481384 0.228 orchards

Aquatic-dependent Birds 15 84 Yuma clapper rail Yes 2582 18494 20900 0.228vegetables

Aquatic-dependent Birds 18 84 Yuma clapper rail Yes 336 2406 20900 0.228vegetables

Aquatic-dependent Birds 17 88 Short-tailed albatross Yes 228 1756 3776 0.228 orchardsAquatic-dependent Birds 18 88 Short-tailed albatross Yes 105 2020 3776 0.228 nurseries

Aquatic-dependent Birds 10 91 Eskimo curlew Yes 8283 20583 21225 0.228vegetables

Aquatic-dependent Birds 12 91 Eskimo curlew Yes 68 642 21225 0.228 nurseriesAquatic-dependent Birds 15 96 California least tern Yes 4876 43328 54654 0.228 orchardsAquatic-dependent Birds 18 96 California least tern Yes 1232 11325 54654 0.228 nurseries

B3 (FC)-26

ESA Taxa HUC 2


HUCs?

Stream Miles



Species Range,

All HUCs

(miles)

Threshold Value2

(ug/L)


Aquatic-dependent Birds 18 102 California clapper rail No 1068 12056 12056 0.228 nurseries

Aquatic-dependent Birds 18 103 Light-footed clapper rail No 369 1595 1595 0.228vegetables

Aquatic-dependent Birds 3 124 Wood stork No 62372 144755 144755 0.228 orchardsAquatic-dependent Birds 3 125 Audubon's crested caracara No 7969 37332 37332 0.228 orchards

Aquatic-dependent Birds 4 130 Piping Plover Yes 573 3443 3566 0.228vegetables

Aquatic-dependent Birds 7 130 Piping Plover Yes 6 6 3566 0.47 nurseries





Aquatic-dependent Birds 7 131 Piping Plover Yes 29 43 400254 0.47 orchardsAquatic-dependent Birds 8 131 Piping Plover Yes 1487 34947 400254 0.228 orchards





Aquatic-dependent Birds 13 131 Piping Plover Yes 3917 21054 400254 0.228 orchardsAquatic-dependent Birds 14 131 Piping Plover Yes 0 6 400254Aquatic-dependent Birds 17 132 Western snowy plover Yes 2022 4709 17756 0.228 orchards

Aquatic-dependent Birds 18 132 Western snowy plover Yes 1036 13047 17756 0.228vegetables

Aquatic-dependent Birds 5 134 Least tern Yes 3544 6310 400484 0.228 vegetabl

B3 (FC)-27

ESA Taxa HUC 2


HUCs?

Stream Miles



Species Range,

All HUCs

(miles)

Threshold Value2

(ug/L)


es

Aquatic-dependent Birds 6 134 Least tern Yes 499 841 400484 0.228vegetables


Aquatic-dependent Birds 8 134 Least tern Yes 2927 14587 400484 0.228 orchards




Aquatic-dependent Birds 12 134 Least tern Yes 3657 14399 400484 0.228 orchardsAquatic-dependent Birds 13 134 Least tern Yes 7558 45189 400484 0.228 orchardsAquatic-dependent Birds 14 134 Least tern Yes 59 2027 400484 0.228 orchards


Aquatic-dependent Birds 1 135 Roseate tern Yes 157 1704 6137 0.47vegetables



Aquatic-dependent Birds 3 136 Roseate tern No 345 1909 1909 0.228 orchardsAquatic-dependent Birds 12 139 Golden-cheeked warbler (=wood) Yes 12298 31627 34870 0.228 orchardsAquatic-dependent Birds 13 139 Golden-cheeked warbler (=wood) Yes 340 3243 34870 0.228 orchardsAquatic Reptiles 18 152 San Francisco garter snake No 149 1622 1622 0.228 nurseriesMarine Reptiles 1 157 Green sea turtle Yes 0 2344 21988

Marine Reptiles 2 157 Green sea turtle Yes 1357 4794 21988 0.228vegetables


B3 (FC)-28

ESA Taxa HUC 2


HUCs?

Stream Miles



Species Range,

All HUCs

(miles)

Threshold Value2

(ug/L)


Marine Reptiles 8 157 Green sea turtle Yes 0 1939 21988


Marine Reptiles 17 157 Green sea turtle Yes 127 2354 21988 0.228 orchardsMarine Reptiles 18 157 Green sea turtle Yes 0 2527 21988


Marine Reptiles 2 158 Green sea turtle Yes 0 4794 21988Marine Reptiles 3 158 Green sea turtle Yes 0 6659 21988Marine Reptiles 8 158 Green sea turtle Yes 165 1939 21988 0.228 nurseriesMarine Reptiles 12 158 Green sea turtle Yes 0 1372 21988Marine Reptiles 17 158 Green sea turtle Yes 0 2354 21988Marine Reptiles 18 158 Green sea turtle Yes 124 2527 21988 0.228 nurseriesMarine Reptiles 3 167 Atlantic salt marsh snake No 1142 4650 4650 0.47 orchards

Aquatic Reptiles 3 168 Alabama red-belly turtle No 1720 3913 3913 0.228vegetables

Aquatic Reptiles 3 169 Flattened musk turtle No 1944 7006 7006 0.228vegetables

Aquatic Reptiles 3 171 Ringed map turtle Yes 856 12493 17191 0.228vegetables

Aquatic Reptiles 8 171 Ringed map turtle Yes 5507 4699 17191 0.228vegetables

Aquatic Reptiles 3 172 Yellow-blotched map turtle No 5422 9989 9989 0.228vegetables

Aquatic Reptiles 3 173 Eastern indigo snake No 46571 94555 94555 0.228 orchardsAquatic Reptiles 3 176 American crocodile No 1914 15165 15165 0.228 orchards

Aquatic Reptiles 4 180 Copperbelly water snake Yes 4132 4894 5976 0.228vegetables



B3 (FC)-29

ESA Taxa HUC 2


HUCs?

Stream Miles



Species Range,

All HUCs

(miles)

Threshold Value2

(ug/L)


Aquatic Reptiles 1 182 Bog (=Muhlenberg) turtle Yes 732 1023 20119 0.47 orchards

Aquatic Reptiles 2 182 Bog (=Muhlenberg) turtle Yes 12891 17707 20119 0.228vegetables

Aquatic Reptiles 4 182 Bog (=Muhlenberg) turtle Yes 1020 1389 20119 0.228vegetables

Aquatic Reptiles 18 187 Giant garter snake No 2761 34614 34614 0.47 nurseriesAquatic Amphibians 12 189 Texas blind salamander No 160 622 622 0.228 orchards

Aquatic Amphibians 18 191 Desert slender salamander No 51 355 355 0.228vegetables

Aquatic Amphibians 12 194 San Marcos salamander No 160 622 622 0.228 orchardsAquatic Amphibians 12 197 Barton Springs salamander No 375 1141 1141 0.228 nurseriesAquatic Amphibians 10 202 Wyoming Toad No 28 1273 1273 0.47 nurseries

Aquatic Amphibians 18 204 Arroyo (=arroyo southwestern) toad No 732 8049 8049 0.228vegetables

Aquatic Amphibians 18 205 California red-legged frog No 5466 101187 101187 0.228 nurseries

Aquatic Amphibians 13 206 Chiricahua leopard frog Yes 3249 23147 66444 0.228vegetables

Aquatic Amphibians 15 206 Chiricahua leopard frog Yes 6324 43296 66444 0.228 orchardsAquatic Amphibians 18 207 Mountain yellow-legged frog No 60 905 905 0.228 orchardsFreshwater Fish 10 209 Humpback chub Yes 0 33 94372Freshwater Fish 11 209 Humpback chub Yes 0 36 94372Freshwater Fish 13 209 Humpback chub Yes 0 2162 94372

Freshwater Fish 14 209 Humpback chub Yes 5073 86804 94372 0.228vegetables

Freshwater Fish 15 209 Humpback chub Yes 271 5283 94372 0.228 orchardsFreshwater Fish 16 209 Humpback chub Yes 0 55 94372

Freshwater Fish 16 210 Cui-ui Yes 120 3362 3390 0.228vegetables

Freshwater Fish 18 210 Cui-ui Yes 0 28 3390Freshwater Fish 2 212 Maryland darter No 30 34 34 0.47 orchardsFreshwater Fish 13 213 Big Bend gambusia No 314 5649 5649 0.228 orchardsFreshwater Fish 12 214 Clear Creek gambusia No 210 883 883 0.228 orchards

B3 (FC)-30

ESA Taxa HUC 2


HUCs?

Stream Miles



Species Range,

All HUCs

(miles)

Threshold Value2

(ug/L)


Freshwater Fish 11 215 Colorado pikeminnow (=squawfish) Yes 0 1 4742Freshwater Fish 13 215 Colorado pikeminnow (=squawfish) Yes 0 365 4742

Freshwater Fish 14 215 Colorado pikeminnow (=squawfish) Yes 864 4344 4742 0.228vegetables

Freshwater Fish 15 215 Colorado pikeminnow (=squawfish) Yes 3 7 4742 0.47vegetables

Freshwater Fish 16 215 Colorado pikeminnow (=squawfish) Yes 0 25 4742Freshwater Fish 13 216 Comanche Springs pupfish No 491 3455 3455 0.228 orchardsFreshwater Fish 18 218 Owens pupfish No 26 1881 1881 0.228 nurseriesFreshwater Fish 13 221 Gila trout Yes 0 9860 21714

Freshwater Fish 15 221 Gila trout Yes 2369 11854 21714 0.228vegetables

Freshwater Fish 10 222 Greenback Cutthroat trout Yes 600 6060 16386 0.228vegetables

Freshwater Fish 11 222 Greenback Cutthroat trout Yes 8 342 16386 0.47 nurseriesFreshwater Fish 14 222 Greenback Cutthroat trout Yes 0 9984 16386

Freshwater Fish 16 223 Paiute cutthroat trout Yes 139 1273 1734 0.228vegetables

Freshwater Fish 18 223 Paiute cutthroat trout Yes 0 460 1734Freshwater Fish 3 224 Okaloosa darter No 1308 2573 2573 0.228 orchardsFreshwater Fish 12 228 Fountain darter No 438 1153 1153 0.228 orchardsFreshwater Fish 3 229 Watercress darter No 35 242 242 0.228 orchardsFreshwater Fish 13 230 Pecos gambusia No 3710 14831 14831 0.228 orchardsFreshwater Fish 18 232 Unarmored threespine stickleback No 75 1356 1356 0.228 nurseriesFreshwater Fish 15 233 Lahontan cutthroat trout Yes 0 3 66089

Freshwater Fish 16 233 Lahontan cutthroat trout Yes 2248 58882 66089 0.228vegetables

Freshwater Fish 17 233 Lahontan cutthroat trout Yes 0 1401 66089

Freshwater Fish 18 233 Lahontan cutthroat trout Yes 141 5803 66089 0.228vegetables

Freshwater Fish 15 234 Woundfin Yes 490 7324 7367 0.228 orchardsFreshwater Fish 16 234 Woundfin Yes 0 43 7367

B3 (FC)-31

ESA Taxa HUC 2


HUCs?

Stream Miles



Species Range,

All HUCs

(miles)

Threshold Value2

(ug/L)


Freshwater Fish 6 235 Snail darter No 1708 6551 6551 0.228vegetables

Freshwater Fish 3 237 Spotfin Chub Yes 0 48 10121Freshwater Fish 5 237 Spotfin Chub Yes 0 3 10121

Freshwater Fish 6 237 Spotfin Chub Yes 2891 10070 10121 0.228vegetables

Freshwater Fish 11 238 Leopard darter No 16 2494 2494 0.228 orchards

Freshwater Fish 6 239 Slackwater darter No 890 2070 2070 0.228vegetables

Freshwater Fish 2 240 Roanoke logperch Yes 0 11 8133

Freshwater Fish 3 240 Roanoke logperch Yes 2597 8091 8133 0.228vegetables

Freshwater Fish 5 240 Roanoke logperch Yes 0 31 8133

Freshwater Fish 3 241 Pygmy Sculpin No 21 29 29 0.47vegetables

Freshwater Fish 3 242 Cape Fear shiner No 997 2459 2459 0.228vegetables

Freshwater Fish 3 243 Waccamaw silverside No 60 102 102 0.47vegetables

Freshwater Fish 8 244 Bayou darter No 777 2048 2048 0.228 orchards

Freshwater Fish 5 245 Scioto madtom No 102 159 159 0.228vegetables

Freshwater Fish 5 246 Slender chub Yes 0 12 5869

Freshwater Fish 6 246 Slender chub Yes 1217 5857 5869 0.228vegetables

Freshwater Fish 10 249 Bonytail chub Yes 0 33 97075Freshwater Fish 11 249 Bonytail chub Yes 0 36 97075Freshwater Fish 13 249 Bonytail chub Yes 0 2162 97075

Freshwater Fish 14 249 Bonytail chub Yes 5231 89961 97075 0.228vegetables

Freshwater Fish 15 249 Bonytail chub Yes 605 4831 97075 0.47vegetables

B3 (FC)-32

ESA Taxa HUC 2


HUCs?

Stream Miles



Species Range,

All HUCs

(miles)

Threshold Value2

(ug/L)


Freshwater Fish 16 249 Bonytail chub Yes 0 52 97075Freshwater Fish 12 250 San Marcos gambusia No 160 621 621 0.228 orchardsFreshwater Fish 13 251 Leon Springs pupfish No 457 2431 2431 0.47 orchardsFreshwater Fish 3 252 Alabama sturgeon No 6940 13721 13721 0.228 orchards

Freshwater Fish 13 254 Chihuahua chub Yes 693 1910 6276 0.228vegetables

Freshwater Fish 15 254 Chihuahua chub Yes 0 4365 6276Freshwater Fish 15 255 Sonora chub No 16 194 194 0.47 orchardsFreshwater Fish 14 256 Virgin River Chub Yes 0 59 5854Freshwater Fish 15 256 Virgin River Chub Yes 488 5752 5854 0.228 orchardsFreshwater Fish 16 256 Virgin River Chub Yes 0 43 5854Freshwater Fish 7 257 Niangua darter Yes 0 209 11293

Freshwater Fish 10 257 Niangua darter Yes 730 10285 11293 0.228vegetables

Freshwater Fish 11 257 Niangua darter Yes 0 798 11293

Freshwater Fish 6 258 Smoky madtom No 86 1019 1019 0.228vegetables

Freshwater Fish 15 259 Yaqui catfish No 163 650 650 0.47 orchardsFreshwater Fish 10 260 Ozark cavefish Yes 122 955 11797 0.228 nurseries

Freshwater Fish 11 260 Ozark cavefish Yes 1007 10842 11797 0.228vegetables

Freshwater Fish 18 262 Owens tui chub No 26 2085 2085 0.228 nurseriesFreshwater Fish 15 263 Yaqui chub No 208 710 710 0.47 orchards

Freshwater Fish 18 264 Ash Meadows speckled dace No 8 26 26 0.228vegetables

Freshwater Fish 16 266 Desert dace No 3 730 730 0.47vegetables

Freshwater Fish 17 267 Foskett speckled dace Yes 14 97 1784 0.228vegetables

Freshwater Fish 18 267 Foskett speckled dace Yes 0 1687 1784Freshwater Fish 3 269 Cherokee darter No 380 1859 1859 0.228 orchardsFreshwater Fish 10 270 Neosho madtom Yes 0 1181 13488

B3 (FC)-33

ESA Taxa HUC 2


HUCs?

Stream Miles



Species Range,

All HUCs

(miles)

Threshold Value2

(ug/L)


Freshwater Fish 11 270 Neosho madtom Yes 1318 12307 13488 0.228 orchards

Freshwater Fish 6 271 Pygmy madtom No 228 1424 1424 0.228vegetables

Freshwater Fish 12 272 Devils River minnow Yes 0 549 3518Freshwater Fish 13 272 Devils River minnow Yes 348 2969 3518 0.228 orchardsFreshwater Fish 13 273 Loach minnow Yes 0 5554 25002

Freshwater Fish 15 273 Loach minnow Yes 3220 19448 25002 0.228vegetables

Freshwater Fish 18 274 Ash Meadows Amargosa pupfish No 8 26 26 0.228vegetables

Freshwater Fish 15 275 Desert pupfish Yes 774 3809 4851 0.228 orchards

Freshwater Fish 18 275 Desert pupfish Yes 232 1042 4851 0.228vegetables

Freshwater Fish 13 276 Beautiful shiner Yes 0 3876 8496

Freshwater Fish 15 276 Beautiful shiner Yes 1196 4620 8496 0.228vegetables

Freshwater Fish 3 277 Cahaba shiner No 725 2024 2024 0.228vegetables

Freshwater Fish 5 278 Palezone shiner Yes 148 1127 1463 0.228vegetables

Freshwater Fish 6 278 Palezone shiner Yes 98 336 1463 0.228 orchardsFreshwater Fish 13 279 Pecos bluntnose shiner No 3091 10494 10494 0.228 orchardsFreshwater Fish 15 281 Little Colorado spinedace No 516 4903 4903 0.228 orchardsFreshwater Fish 3 286 Gulf sturgeon Yes 1355 6104 7496 0.228 orchardsFreshwater Fish 8 286 Gulf sturgeon Yes 333 1392 7496 0.228 nurseriesFreshwater Fish 14 287 June sucker Yes 0 168 3469Freshwater Fish 16 287 June sucker Yes 905 3301 3469 0.228 orchardsFreshwater Fish 17 288 Lost River sucker Yes 0 153 5268

Freshwater Fish 18 288 Lost River sucker Yes 766 5114 5268 0.228vegetables

Freshwater Fish 17 289 Modoc Sucker Yes 0 6507 9162Freshwater Fish 18 289 Modoc Sucker Yes 390 2655 9162 0.228 vegetabl

B3 (FC)-34

ESA Taxa HUC 2


HUCs?

Stream Miles



Species Range,

All HUCs

(miles)

Threshold Value2

(ug/L)


esFreshwater Fish 10 290 Razorback sucker Yes 0 33 137896Freshwater Fish 11 290 Razorback sucker Yes 0 36 137896Freshwater Fish 13 290 Razorback sucker Yes 0 3324 137896

Freshwater Fish 14 290 Razorback sucker Yes 10662 107817 137896 0.228vegetables

Freshwater Fish 15 290 Razorback sucker Yes 2675 26635 137896 0.228 orchardsFreshwater Fish 16 290 Razorback sucker Yes 0 52 137896Freshwater Fish 17 291 Shortnose Sucker Yes 0 7292 14135

Freshwater Fish 18 291 Shortnose Sucker Yes 917 6844 14135 0.228vegetables

Freshwater Fish 17 292 Warner sucker Yes 56 2540 2561 0.228vegetables

Freshwater Fish 18 292 Warner sucker Yes 0 21 2561

Freshwater Fish 3 293 Amber darter No 354 1595 1595 0.228vegetables

Freshwater Fish 3 294 Conasauga logperch No 119 534 534 0.228 orchards

Freshwater Fish 5 295 Blackside dace Yes 436 6230 8918 0.228vegetables

Freshwater Fish 6 295 Blackside dace Yes 0 2688 8918Freshwater Fish 13 296 Spikedace Yes 0 5554 25323

Freshwater Fish 15 296 Spikedace Yes 3283 19769 25323 0.228vegetables

Freshwater Fish 6 297 Boulder darter No 521 2360 2360 0.228vegetables

Freshwater Fish 3 298 Goldline darter Yes 641 2154 2160 0.228 orchardsFreshwater Fish 6 298 Goldline darter Yes 0 6 2160

Freshwater Fish 11 299 Arkansas River shiner Yes 4723 19512 19658 0.228vegetables

Freshwater Fish 13 299 Arkansas River shiner Yes 0 146 19658

Freshwater Fish 3 300 Blue shiner No 424 1702 1702 0.228vegetables

B3 (FC)-35

ESA Taxa HUC 2


HUCs?

Stream Miles



Species Range,

All HUCs

(miles)

Threshold Value2

(ug/L)


Freshwater Fish 9 301 Bull Trout Yes 0 315 92791

Freshwater Fish 17 301 Bull Trout Yes 9078 91876 92791 0.228vegetables

Freshwater Fish 18 301 Bull Trout Yes 123 599 92791 0.228vegetables

Freshwater Fish 3 303 Pallid sturgeon Yes 0 0.24 163161Freshwater Fish 5 303 Pallid sturgeon Yes 0 172 163161Freshwater Fish 7 303 Pallid sturgeon Yes 359 378 163161 0.228 orchardsFreshwater Fish 8 303 Pallid sturgeon Yes 7702 37039 163161 0.228 orchardsFreshwater Fish 9 303 Pallid sturgeon Yes 0 131 163161

Freshwater Fish 10 303 Pallid sturgeon Yes 64988 121093 163161 0.228vegetables

Freshwater Fish 11 303 Pallid sturgeon Yes 0 4332 163161Freshwater Fish 12 303 Pallid sturgeon Yes 0 16 163161Freshwater Fish 17 304 Oregon chub No 7723 10741 10741 0.228 orchardsFreshwater Fish 18 305 Delta smelt No 1058 9089 9089 0.228 nurseriesFreshwater Fish 17 306 Tidewater goby Yes 0 13 7925Freshwater Fish 18 306 Tidewater goby Yes 552 7912 7925 0.228 nurseries

Freshwater Fish 5 307 Bluemask (=jewel) Darter No 419 1328 1328 0.228vegetables

Freshwater Fish 5 308 Duskytail darter Yes 82 659 1522 0.228vegetables

Freshwater Fish 6 308 Duskytail darter Yes 157 863 1522 0.228vegetables

Freshwater Fish 13 309 Rio Grande Silvery Minnow No 861 5606 5606 0.228 orchards

Freshwater Fish 7 311 Topeka shiner Yes 5023 10017 71694 0.228vegetables



Freshwater Fish 18 312 Santa Ana sucker No 231 1439 1439 0.228 nurseries

B3 (FC)-36

ESA Taxa HUC 2


HUCs?

Stream Miles



Species Range,

All HUCs

(miles)

Threshold Value2

(ug/L)


Freshwater Fish 17 314 White sturgeon No 87 90 90 0.47vegetables

Freshwater Fish 3 315 Etowah darter No 270 1158 1158 0.228 orchardsFreshwater Fish 3 316 Vermilion darter No 38 206 206 0.228 orchards

Mollusks 5 317 Cumberland bean (pearlymussel) Yes 695 6272 10181 0.044vegetables

Mollusks 6 317 Cumberland bean (pearlymussel) Yes 1344 3909 10181 0.044vegetables

Mollusks 5 318 Purple bean Yes 0 11 4379

Mollusks 6 318 Purple bean Yes 1141 4368 4379 0.044vegetables

Freshwater Fish 6 319 Green blossom (pearlymussel) No 334 1746 1746 0.228vegetables

Freshwater Fish 5 320 Tubercled blossom (pearlymussel) Yes 139 1134 2631 0.228 nurseriesFreshwater Fish 6 320 Tubercled blossom (pearlymussel) Yes 366 1496 2631 0.228 nurseries

Freshwater Fish 6 321 Turgid blossom (pearlymussel) Yes 801 3074 4151 0.228vegetables

Freshwater Fish 11 321 Turgid blossom (pearlymussel) Yes 1 1078 4151 0.47 nurseries

Mollusks 5 322 Yellow blossom (pearlymussel) No 348 1830 1830 0.47vegetables

Freshwater Fish 5 322 Yellow blossom (pearlymussel) No 348 1830 1830 0.044vegetables

Mollusks 6 323 Purple Cat's paw No 88 1746 1746 0.044 nurseries

Mollusks 6 323 Purple Cat's paw No 88 1746 1746 0.044vegetables

Freshwater Fish 4 324 White catspaw (pearlymussel) No 346 572 572 0.228vegetables

Mollusks 7 325 Higgins eye (pearlymussel) Yes 1164 1279 1993 0.044vegetables

Mollusks 10 325 Higgins eye (pearlymussel) Yes 0 714 1993

Freshwater Fish 6 326 Alabama lampmussel No 256 1454 1454 0.228vegetables

B3 (FC)-37

ESA Taxa HUC 2


HUCs?

Stream Miles



Species Range,

All HUCs

(miles)

Threshold Value2

(ug/L)


Freshwater Fish 6 327 Pale lilliput (pearlymussel) No 703 2871 2871 0.228vegetables

Mollusks 6 328 Winged Mapleleaf Yes 88 541 20814 0.044vegetables

Mollusks 7 328 Winged Mapleleaf Yes 160 226 20814 0.044 nurseries

Mollusks 8 328 Winged Mapleleaf Yes 430 10683 20814 0.044vegetables

Mollusks 11 328 Winged Mapleleaf Yes 1305 9364 20814 0.044 orchards

Freshwater Fish 5 329Appalachian monkeyface (pearlymussel) Yes 82 500 3179 0.47

vegetables

Freshwater Fish 6 329Appalachian monkeyface (pearlymussel) Yes 373 2679 3179 0.228

vegetables

Mollusks 6 330Cumberland monkeyface (pearlymussel) No 2153 8537 8537 0.044

vegetables

Mollusks 5 331 Pink mucket (pearlymussel) Yes 4991 19337 66924 0.044vegetables


Mollusks 7 331 Pink mucket (pearlymussel) Yes 219 945 66924 0.044 nurseries


Mollusks 10 331 Pink mucket (pearlymussel) Yes 0 2338 66924Mollusks 11 331 Pink mucket (pearlymussel) Yes 2253 11699 66924 0.044 orchards

Freshwater Fish 6 332 Birdwing pearlymussel No 334 1746 1746 0.228vegetables

Mollusks 7 333 Curtis pearlymussel Yes 14 645 4510 0.044 orchardsMollusks 8 333 Curtis pearlymussel Yes 0 52 4510

Mollusks 11 333 Curtis pearlymussel Yes 593 3813 4510 0.044vegetables

Mollusks 5 334 Dromedary pearlymussel Yes 289 1389 7465 0.044vegetables

Mollusks 6 334 Dromedary pearlymussel Yes 1699 6076 7465 0.044 vegetabl

B3 (FC)-38

ESA Taxa HUC 2


HUCs?

Stream Miles



Species Range,

All HUCs

(miles)

Threshold Value2

(ug/L)


es

Mollusks 3 335 Littlewing pearlymussel Yes 35 48 13930 0.044vegetables



Freshwater Fish 5 336 White wartyback (pearlymussel) Yes 494 1456 3760 0.228vegetables

Freshwater Fish 6 336 White wartyback (pearlymussel) Yes 493 2304 3760 0.228vegetables

Mollusks 5 337 Finerayed pigtoe Yes 0 11 9218

Mollusks 6 337 Finerayed pigtoe Yes 2273 9207 9218 0.044vegetables

Freshwater Fish 5 338 Rough pigtoe Yes 4593 15221 21016 0.228vegetables

Freshwater Fish 6 338 Rough pigtoe Yes 1539 5574 21016 0.228vegetables

Freshwater Fish 8 338 Rough pigtoe Yes 0 221 21016

Mollusks 5 339 Shiny pigtoe Yes 2 13 8017 0.044vegetables

Mollusks 6 339 Shiny pigtoe Yes 1789 8003 8017 0.044vegetables

Freshwater Fish 5 340 Orangefoot pimpleback (pearlymussel) Yes 5533 16631 23589 0.228vegetables



Freshwater Fish 8 340 Orangefoot pimpleback (pearlymussel) Yes 0 290 23589

Freshwater Fish 5 341 Ring pink (mussel) Yes 5433 17188 22967 0.228vegetables

B3 (FC)-39

ESA Taxa HUC 2


HUCs?

Stream Miles



Species Range,

All HUCs

(miles)

Threshold Value2

(ug/L)


Freshwater Fish 6 341 Ring pink (mussel) Yes 1285 5487 22967 0.228vegetables

Freshwater Fish 8 341 Ring pink (mussel) Yes 0 292 22967

Freshwater Fish 5 342 Fat pocketbook Yes 14 24 12492 0.47vegetables

Freshwater Fish 7 342 Fat pocketbook Yes 118 1029 12492 0.228vegetables

Freshwater Fish 8 342 Fat pocketbook Yes 2771 10564 12492 0.47 orchardsFreshwater Fish 11 342 Fat pocketbook Yes 505 875 12492 0.228 orchards

Mollusks 8 343 Ouachita rock pocketbook Yes 399 6107 13584 0.044vegetables

Mollusks 11 343 Ouachita rock pocketbook Yes 947 7477 13584 0.044 orchardsMollusks 5 344 Rough rabbitsfoot Yes 0 11 5390

Mollusks 6 344 Rough rabbitsfoot Yes 1388 5379 5390 0.044vegetables

Freshwater Fish 5 345 Scaleshell mussel Yes 455 2905 23222 0.228vegetables


Freshwater Fish 8 345 Scaleshell mussel Yes 0 4503 23222


Freshwater Fish 11 345 Scaleshell mussel Yes 1674 11794 23222 0.228 orchards

Mollusks 5 346 Tan riffleshell Yes 506 2396 5740 0.044vegetables

Mollusks 6 346 Tan riffleshell Yes 694 3344 5740 0.044vegetables

Freshwater Fish 3 347 Black clubshell No 635 1905 1905 0.228vegetables

Freshwater Fish 3 348 Southern combshell No 648 2235 2235 0.228vegetables

Freshwater Fish 3 349 Flat pigtoe No 618 1703 1703 0.228 orchards

B3 (FC)-40

ESA Taxa HUC 2


HUCs?

Stream Miles



Species Range,

All HUCs

(miles)

Threshold Value2

(ug/L)


Freshwater Fish 3 350 Heavy pigtoe No 1351 3361 3361 0.228 orchards

Freshwater Fish 3 351 Tar River spinymussel No 2184 2658 2658 0.228vegetables

Marine Fish 5 353 Cumberlandian combshell Yes 647 6220 11331 0.228vegetables

Marine Fish 6 353 Cumberlandian combshell Yes 0 5111 11331

Mollusks 3 354 Appalachian elktoe Yes 303 370 6259 0.044vegetables

Freshwater Fish 3 354 Appalachian elktoe Yes 141 370 6259 0.47vegetables

Mollusks 6 354 Appalachian elktoe Yes 4888 5889 6259 0.228vegetables

Freshwater Fish 6 354 Appalachian elktoe Yes 4947 5889 6259 3700vegetables

Mollusks 5 355 Cumberland elktoe No 938 6337 6337 0.044vegetables

Freshwater Fish 3 356 Alabama (=inflated) heelsplitter Yes 92 1003 4863 0.228vegetables

Freshwater Fish 6 356 Alabama (=inflated) heelsplitter Yes 0 3 4863

Freshwater Fish 8 356 Alabama (=inflated) heelsplitter Yes 476 3858 4863 0.228vegetables

Mollusks 3 357 Orangenacre mucket No 3657 13109 13109 0.044 orchards

Marine Fish 5 358 Oyster mussel Yes 402 4940 13338 0.228vegetables

Marine Fish 6 358 Oyster mussel Yes 0 8398 13338

Freshwater Fish 6 359 Cracking pearlymussel No 1307 5944 5944 0.228vegetables

Mollusks 8 360 Speckled pocketbook Yes 0 1005 9297Mollusks 11 360 Speckled pocketbook Yes 1029 8292 9297 0.044 orchardsMollusks 2 361 James spinymussel Yes 0 8446 11167

Mollusks 3 361 James spinymussel Yes 1224 2718 11167 0.044vegetables

B3 (FC)-41

ESA Taxa HUC 2


HUCs?

Stream Miles



Species Range,

All HUCs

(miles)

Threshold Value2

(ug/L)


Mollusks 5 361 James spinymussel Yes 0 3 11167Mollusks 3 362 Stirrupshell No 639 1704 1704 0.044 orchards

Mollusks 8 364 Louisiana pearlshell Yes 755 2519 4406 0.044vegetables

Mollusks 11 364 Louisiana pearlshell Yes 235 1888 4406 0.044 orchards

Freshwater Fish 3 365 Southern acornshell No 724 2722 2722 0.228vegetables

Marine Fish 3 366 Purple bankclimber (mussel) No 11413 15240 15240 0.228 orchards

Freshwater Fish 3 367 Upland combshell Yes 2776 9810 10134 0.228vegetables

Freshwater Fish 6 367 Upland combshell Yes 90 324 10134 0.228vegetables

Mollusks 5 368 Fanshell No 300 986 986 0.044vegetables

Freshwater Fish 3 370 Carolina heelsplitter No 5410 10042 10042 0.228 orchardsMollusks 3 371 Oval pigtoe No 13836 19463 19463 0.044 orchards

Mollusks 3 372 Finelined pocketbook No 4721 14428 14428 0.044vegetables

Mollusks 3 373 Shinyrayed pocketbook No 9733 13472 13472 0.044 orchards

Freshwater Fish 4 374 Northern riffleshell Yes 3759 4513 17395 0.228vegetables



Mollusks 3 375 Fat threeridge (mussel) No 5958 8294 8294 0.044 orchardsFreshwater Fish 5 376 Cumberland pigtoe Yes 0 1855 2084

Freshwater Fish 6 376 Cumberland pigtoe Yes 76 230 2084 0.47vegetables

Freshwater Fish 3 377 Ovate clubshell No 958 4129 4129 0.228 orchardsMollusks 3 378 Southern clubshell No 724 2438 2438 0.044 orchardsMollusks 3 379 Triangular Kidneyshell No 2617 9605 9605 0.044 vegetabl

B3 (FC)-42

ESA Taxa HUC 2


HUCs?

Stream Miles



Species Range,

All HUCs

(miles)

Threshold Value2

(ug/L)


es

Mollusks 3 380 Alabama moccasinshell No 3309 11712 11712 0.044vegetables

Freshwater Fish 3 381 Coosa moccasinshell No 847 3910 3910 0.228vegetables

Mollusks 3 382 Dark pigtoe Yes 379 2303 2913 0.044vegetables

Mollusks 6 382 Dark pigtoe Yes 112 610 2913 0.044vegetables

Mollusks 3 383 Southern pigtoe No 2399 8780 8780 0.044vegetables

Mollusks 3 384 Gulf moccasinshell No 11032 14666 14666 0.044 orchardsFreshwater Fish 3 385 Ochlockonee moccasinshell No 1832 2441 2441 0.228 orchardsFreshwater Fish 3 386 Chipola slabshell No 1159 1915 1915 0.228 orchards

Freshwater Invertebrates 6 396 Anthony's riversnail No 720 2972 2972 0.044vegetables

Freshwater Invertebrates 17 398 Bliss Rapids snail No 82 272 272 0.044vegetables

Freshwater Invertebrates 17 399 Snake River physa snail No 358 854 854 0.044vegetables

Freshwater Invertebrates 6 402 Armored snail No 180 233 233 0.044vegetables

Freshwater Invertebrates 13 403 Alamosa springsnail No 984 10301 10301 0.044 orchardsFreshwater Invertebrates 17 404 Bruneau Hot springsnail No 6 20 20 0.044 orchardsFreshwater Invertebrates 11 406 Tumbling Creek cavesnail No 99 1099 1099 0.044 nurseriesFreshwater Invertebrates 3 407 Tulotoma snail No 4529 10051 10051 0.044 orchardsFreshwater Invertebrates 13 408 Socorro springsnail No 984 10301 10301 0.044 orchards

Freshwater Invertebrates 3 411 Lacy elimia (snail) No 105 307 307 0.044vegetables

Freshwater Invertebrates 3 412 Cylindrical lioplax (snail) No 206 530 530 0.044vegetables

Freshwater Invertebrates 3 413 Flat pebblesnail No 129 322 322 0.044 vegetabl

B3 (FC)-43

ESA Taxa HUC 2


HUCs?

Stream Miles



Species Range,

All HUCs

(miles)

Threshold Value2

(ug/L)


es

Freshwater Invertebrates 3 414 Painted rocksnail No 150 389 389 0.044vegetables

Freshwater Invertebrates 3 415 Plicate rocksnail No 192 369 369 0.044vegetables

Freshwater Invertebrates 3 416 Round rocksnail No 250 752 752 0.044vegetables

Freshwater Invertebrates 6 417 Slender campeloma No 227 386 386 0.044vegetables

Freshwater Invertebrates 18 435 Delta green ground beetle No 292 2512 2512 0.044vegetables

Freshwater Invertebrates 4 441 Hungerford's crawling water Beetle No 1242 1915 1915 0.044vegetables

Freshwater Invertebrates 4 445 Hine's emerald dragonfly Yes 29 95 140 0.044vegetables

Freshwater Invertebrates 7 445 Hine's emerald dragonfly Yes 9 35 140 0.044vegetables

Freshwater Invertebrates 10 445 Hine's emerald dragonfly Yes 0 2 140Freshwater Invertebrates 11 445 Hine's emerald dragonfly Yes 0 8 140Freshwater Invertebrates 12 453 Comal Springs riffle beetle No 481 1154 1154 0.47 orchardsFreshwater Invertebrates 12 454 Comal Springs dryopid beetle No 1050 1154 1154 3700 nurseriesFreshwater Invertebrates 2 475 Hay's Spring amphipod No 11 14 14 0.044 orchardsFreshwater Invertebrates 12 477 Peck's cave amphipod No 317 569 569 0.044 orchardsFreshwater Invertebrates 5 478 Nashville crayfish No 16 136 136 0.044 nurseries

Freshwater Invertebrates 18 479 Shasta crayfish No 242 2354 2354 0.044vegetables

Freshwater Invertebrates 6 480 Alabama cave shrimp No 248 392 392 0.044vegetables

Freshwater Invertebrates 18 481 California freshwater shrimp No 599 5497 5497 0.044 nurseries

Freshwater Invertebrates 5 482 Kentucky cave shrimp No 610 1655 1655 0.044vegetables

Freshwater Invertebrates 7 484 Illinois cave amphipod No 1052 1735 1735 0.044 vegetabl

B3 (FC)-44

ESA Taxa HUC 2


HUCs?

Stream Miles



Species Range,

All HUCs

(miles)

Threshold Value2

(ug/L)


esFreshwater Invertebrates 6 486 Lee County cave isopod No 20 80 80 0.044 nurseries

Freshwater Invertebrates 3 487 Squirrel Chimney Cave shrimp No 273 391 391 0.044vegetables

Freshwater Invertebrates 11 489 Cave crayfish No 269 3179 3179 0.044 nurseriesAquatic Plants - vascular 18 580 Colusa grass No 33 2361 2361 500 nurseries

Aquatic Plants - vascular 5 677 Cumberland rosemary Yes 475 2916 4445 500vegetables

Aquatic Plants - vascular 6 677 Cumberland rosemary Yes 326 1528 4445 500vegetables

Aquatic Plants - vascular 13 807 Little Aguja (=Creek) Pondweed No 23 2121 2121 500 orchardsAquatic Plants - vascular 12 870 Texas wild-rice Yes 1485 5707 6298 500 orchardsAquatic Plants - vascular 13 870 Texas wild-rice Yes 0 591 6298

Aquatic Plants - vascular 3 1064 Kral's water-plantain No 101 1484 1484 500vegetables

Aquatic Plants - vascular 3 1199 Louisiana quillwort Yes 3708 13759 14847 500vegetables

Aquatic Plants - vascular 8 1199 Louisiana quillwort Yes 161 1089 14847 500vegetables

Freshwater Invertebrates 13 1247 Koster's springsnail No 1376 5329 5329 0.044 orchardsFreshwater Invertebrates 13 1261 Noel's Amphipod No 1376 5329 5329 0.044 orchards

Freshwater Invertebrates 3 1358 Magnificent ramshorn No 830 1698 1698 0.47vegetables

Freshwater Fish 3 1369 Fuzzy pigtoe No 8680 14152 14152 0.228 orchardsFreshwater Invertebrates 15 1380 San Bernardino springsnail No 42 86 86 0.044 orchardsFreshwater Fish 17 1509 Chum salmon No 51 1751 1751 0.228 orchards

Marine Fish 5 1559 Fluted kidneyshell Yes 1111 7306 14705 0.228vegetables

Marine Fish 6 1559 Fluted kidneyshell Yes 1724 7399 14705 0.228vegetables

Mollusks 6 1680 Alabama lampmussel No 838 1745 1745 0.044vegetables

B3 (FC)-45

ESA Taxa HUC 2


HUCs?

Stream Miles



Species Range,

All HUCs

(miles)

Threshold Value2

(ug/L)


Freshwater Fish 6 1680 Alabama lampmussel No 0 1745 1745Aquatic Amphibians 16 1707 Yosemite toad Yes 20 967 7694 0.228 orchards

Aquatic Amphibians 18 1707 Yosemite toad Yes 33 6727 7694 0.228vegetables

Aquatic Reptiles 13 1783 Northern Mexican gartersnake Yes 987 5642 145326 0.228vegetables

Aquatic Reptiles 14 1783 Northern Mexican gartersnake Yes 186 6245 145326 0.228vegetables

Aquatic Reptiles 15 1783 Northern Mexican gartersnake Yes 14446 133440 145326 0.228 orchardsFreshwater Invertebrates 9 1849 Meltwater lednian stonefly Yes 0 918 10056

Freshwater Invertebrates 10 1849 Meltwater lednian stonefly Yes 1295 2827 10056 0.044vegetables

Freshwater Invertebrates 17 1849 Meltwater lednian stonefly Yes 2001 6312 10056 0.044 orchards

Mollusks 6 1897 Clubshell No 404 1746 1746 0.044vegetables

Mollusks 9 1905 Oyster mussel No 35 1746 1746 0.044vegetables

Freshwater Fish 6 1934 Spotfin Chub No 10 27 27 0.228 nurseriesFreshwater Fish 15 2142 Colorado pikeminnow (=squawfish) No 275 3468 3468 0.228 orchards

Mollusks 6 2192 Dromedary pearlymussel No 404 1746 1746 0.044vegetables


Freshwater Fish 6 2316 Yellow blossom (pearlymussel) No 334 1746 1746 0.228vegetables

Freshwater Fish 18 2448 Steelhead No 1133 9805 9805 0.228vegetables

Freshwater Fish 16 2514 Chinook salmon Yes 0 0.24 58833

Freshwater Fish 18 2514 Chinook salmon Yes 3505 58832 58833 0.228vegetables


B3 (FC)-46

ESA Taxa HUC 2


HUCs?

Stream Miles



Species Range,

All HUCs

(miles)

Threshold Value2

(ug/L)


Freshwater Invertebrates 3 2561 Interrupted (=Georgia) Rocksnail No 214 1194 1194 0.044vegetables

Freshwater Fish 15 2599 Woundfin No 1111 5076 5076 0.228 orchardsFreshwater Invertebrates 15 2767 Stephan's Riffle beetle No 445 1839 1839 0.044 orchardsFreshwater Fish 18 2842 Steelhead No 567 11021 11021 0.228 nurseriesMarine Fish 12 2917 Texas Hornshell Yes 0 1517 17036Marine Fish 13 2917 Texas Hornshell Yes 2641 15520 17036 0.228 orchards

Mollusks 6 3226 Finerayed pigtoe No 404 1746 1746 0.044vegetables

Aquatic Reptiles 13 3271 Narrow-headed garter snake Yes 2079 11244 23589 0.228vegetables

Aquatic Reptiles 15 3271 Narrow-headed garter snake Yes 2667 12345 23589 0.228vegetables

Freshwater Fish 13 3280 Zuni bluehead Sucker Yes 0 4262 29794

Freshwater Fish 14 3280 Zuni bluehead Sucker Yes 2978 13064 29794 0.228vegetables

Freshwater Fish 15 3280 Zuni bluehead Sucker Yes 1481 12468 29794 0.228vegetables

Freshwater Invertebrates 3 3364 Rough hornsnail No 209 555 555 0.044vegetables

Freshwater Fish 17 3398 Chinook salmon No 4358 94190 94190 0.228 orchardsFreshwater Fish 13 3497 Roundtail chub Yes 0 4335 129378

Freshwater Fish 14 3497 Roundtail chub Yes 182 6191 129378 0.228vegetables

Freshwater Fish 15 3497 Roundtail chub Yes 10410 118852 129378 0.228 orchards

Freshwater Fish 3 3525 Rush Darter No 1076 3297 3297 0.228vegetables

Aquatic Amphibians 15 3628 Relict leopard Frog Yes 943 22515 22534 0.228 orchardsAquatic Amphibians 16 3628 Relict leopard Frog Yes 0 19 22534Mollusks 4 3645 Rabbitsfoot Yes 199 343 104592 0.044 orchards

Mollusks 5 3645 Rabbitsfoot Yes 15284 34190 104592 0.044vegetables

B3 (FC)-47

ESA Taxa HUC 2


HUCs?

Stream Miles



Species Range,

All HUCs

(miles)

Threshold Value2

(ug/L)





Mollusks 10 3645 Rabbitsfoot Yes 0 394 104592Mollusks 11 3645 Rabbitsfoot Yes 4796 35465 104592 0.044 orchardsFreshwater Fish 18 3654 Steelhead No 946 9433 9433 0.228 nurseries

Freshwater Invertebrates 6 3748 Sequatchie caddisfly No 106 750 750 0.044vegetables

Freshwater Fish 3 3833 Georgia pigtoe No 257 1130 1130 0.228vegetables


Freshwater Fish 10 3879 Arkansas darter Yes 0 3008 53669

Freshwater Fish 11 3879 Arkansas darter Yes 6445 50661 53669 0.228vegetables

Freshwater Fish 3 4042 Choctaw bean No 10101 16794 16794 0.228 orchardsMollusks 10 4086 Neosho Mucket Yes 184 1242 27054 0.044 orchardsMollusks 11 4086 Neosho Mucket Yes 3361 25812 27054 0.044 orchardsFreshwater Fish 18 4093 green sturgeon No 2665 28841 28841 0.228 nurseriesFreshwater Fish 17 4112 Steelhead No 4833 6913 6913 0.228 orchardsFreshwater Invertebrates 13 4162 Chupadera springsnail No 984 10301 10301 0.044 orchardsFreshwater Fish 3 4210 Altamaha Spinymussel No 2349 2680 2680 0.47 orchardsFreshwater Fish 7 4248 Grotto Sculpin No 85 666 666 0.47 orchardsFreshwater Fish 16 4274 Steelhead Yes 0 0.24 70625

Freshwater Fish 18 4274 Steelhead Yes 3824 70624 70625 0.228vegetables

Freshwater Fish 17 4300 Chinook salmon No 875 11580 11580 0.228 orchards

Freshwater Fish 1 4330 Shortnose sturgeon Yes 1262 1953 12971 0.228vegetables

B3 (FC)-48

ESA Taxa HUC 2


HUCs?

Stream Miles



Species Range,

All HUCs

(miles)

Threshold Value2

(ug/L)




Freshwater Fish 3 4411 Alabama pearlshell No 620 1322 1322 0.228 orchards

Freshwater Fish 3 4431 Pearl darter No 1839 3396 3396 0.228vegetables

Freshwater Invertebrates 13 4437 Diamond Tryonia No 462 2451 2451 0.044 orchardsFreshwater Invertebrates 13 4479 Phantom Springsnail No 524 3479 3479 0.044 orchardsMollusks 5 4490 Spectaclecase (mussel) Yes 1395 3738 13753 0.044 nurseries

Mollusks 6 4490 Spectaclecase (mussel) Yes 2034 6515 13753 0.044vegetables


Mollusks 8 4490 Spectaclecase (mussel) Yes 53 182 13753 0.044 orchardsMollusks 10 4490 Spectaclecase (mussel) Yes 695 982 13753 0.044 nurseries


Mollusks 14 4490 Spectaclecase (mussel) Yes 0 1 13753Aquatic-dependent Birds 3 4679 Whooping crane Yes 5379 25043 119023 0.47 orchards



Aquatic-dependent Birds 12 4679 Whooping crane Yes 5434 15226 119023 0.228 orchardsAquatic-dependent Birds 13 4679 Whooping crane Yes 42 149 119023 0.228 orchardsAquatic-dependent Birds 14 4679 Whooping crane Yes 0 12 119023Freshwater Invertebrates 15 4766 Three Forks Springsnail No 16 323 323 0.044 orchards

Freshwater Fish 17 4799 Chinook salmon No 1228 9224 9224 0.228vegetables

Freshwater Fish 3 4881 Smalltooth sawfish No 1250 7227 7227 0.228 orchardsFreshwater Invertebrates 10 4910 Salt Creek Tiger beetle No 791 2081 2081 0.044 vegetabl

B3 (FC)-49

ESA Taxa HUC 2


HUCs?

Stream Miles



Species Range,

All HUCs

(miles)

Threshold Value2

(ug/L)


es


Aquatic Amphibians 3 5065 Black warrior (=Sipsey Fork) Waterdog No 1939 7039 7039 0.228vegetables

Freshwater Fish 17 5180 Chum salmon No 794 6126 6126 0.228 orchardsFreshwater Fish 17 5265 Coho salmon No 7815 12533 12533 0.228 orchards

Freshwater Fish 4 5281 Snuffbox mussel Yes 8468 9430 72747 0.228vegetables




Freshwater Fish 8 5281 Snuffbox mussel Yes 0 1008 72747


Freshwater Fish 11 5281 Snuffbox mussel Yes 429 7409 72747 0.228 orchardsFreshwater Invertebrates 13 5362 Gonzales tryonia No 462 2451 2451 0.044 orchardsFreshwater Invertebrates 16 5386 Nevares Spring naucorid bug Yes 0 3 2365Freshwater Invertebrates 18 5386 Nevares Spring naucorid bug Yes 202 2362 2365 0.044 nurseriesAquatic Amphibians 12 5434 Georgetown Salamander No 462 1109 1109 0.228 orchardsFreshwater Fish 18 5658 Steelhead No 2005 20629 20629 0.228 nurseries

Freshwater Invertebrates 15 5666 Page springsnail No 1351 10989 10989 0.044vegetables

Freshwater Invertebrates 2 5714 Kenk's amphipod No 66 107 107 0.044vegetables

Mollusks 9 5715 Cumberlandian combshell No 35 1747 1747 0.044vegetables

Marine Fish 9 5715 Cumberlandian combshell No 35 1747 1747 0.47vegetables

B3 (FC)-50

ESA Taxa HUC 2


HUCs?

Stream Miles



Species Range,

All HUCs

(miles)

Threshold Value2

(ug/L)



vegetables

Freshwater Fish 5 5719 Cumberland darter No 102 1337 1337 0.228vegetables

Freshwater Fish 17 5815 Steelhead No 887 38706 38706 0.228 orchards

Aquatic Amphibians 16 5819 Columbia spotted frog Yes 371 19343 35143 0.228vegetables

Aquatic Amphibians 17 5819 Columbia spotted frog Yes 1944 15801 35143 0.228vegetables

Mollusks 6 5833 Shiny pigtoe No 404 1746 1746 0.044vegetables

Freshwater Fish 6 5856 Turgid blossom (pearlymussel) No 334 1746 1746 0.228vegetables

Freshwater Fish 6 5981 Smoky madtom No 10 27 27 0.228 nurseries

Mollusks 4 6062 Rayed Bean Yes 3613 4450 20987 0.044vegetables




Freshwater Invertebrates 13 6138 Phantom Tryonia No 524 3479 3479 0.044 orchards


Freshwater Fish 6 6223 Tubercled blossom (pearlymussel) No 334 1746 1746 0.228vegetables

Freshwater Fish 13 6297 Gila chub Yes 0 1910 13035Freshwater Fish 15 6297 Gila chub Yes 1884 11125 13035 0.228 orchardsAquatic Amphibians 12 6346 Austin blind Salamander No 364 1103 1103 0.228 nurseriesFreshwater Fish 6 6503 Duskytail darter No 10 27 27 0.228 nurseriesFreshwater Fish 3 6534 Tapered pigtoe No 5159 8521 8521 0.228 orchards

B3 (FC)-51

ESA Taxa HUC 2


HUCs?

Stream Miles



Species Range,

All HUCs

(miles)

Threshold Value2

(ug/L)


Freshwater Fish 5 6557 diamond Darter No 51 1502 1502 0.228 nurseriesFreshwater Fish 17 6578 Coho salmon Yes 2263 6665 24135 0.228 orchards

Freshwater Fish 18 6578 Coho salmon Yes 2473 17471 24135 0.228vegetables

Freshwater Invertebrates 13 6596 Pecos amphipod No 462 2451 2451 0.044 orchardsAquatic Reptiles 15 6620 Sonoyta mud turtle No 2666 13565 13565 0.228 orchards

Freshwater Fish 11 6662 Yellowcheek Darter No 8 1254 1254 0.47vegetables

Freshwater Invertebrates 15 6739 Huachuca springsnail No 2277 8768 8768 0.044 orchards

Mollusks 5 6841 Slabside Pearlymussel Yes 1014 2744 14497 0.044vegetables

Mollusks 6 6841 Slabside Pearlymussel Yes 2903 11753 14497 0.044vegetables

Freshwater Fish 17 6843 Sockeye salmon No 5 117 117 0.47vegetables

Freshwater Fish 18 6966 Coho salmon No 903 10790 10790 0.228 nurseries

Freshwater Fish 6 7091 Winged Mapleleaf No 334 1746 1746 0.228vegetables

Freshwater Fish 6 7150 Chucky Madtom No 217 347 347 0.47vegetables

Freshwater Fish 3 7177 Narrow pigtoe No 5911 10666 10666 0.228 orchards

Freshwater Fish 6 7332 Spring pygmy sunfish No 25 36 36 0.47vegetables



Freshwater Fish 3 7349 Southern sandshell No 9849 16668 16668 0.228 orchardsFreshwater Fish 3 7363 Round Ebonyshell No 2856 5074 5074 0.228 orchards

Mollusks 6 7512 Cumberland bean (pearlymussel) No 404 1746 1746 0.044vegetables

Freshwater Fish 17 7590 Chinook salmon No 982 12310 12310 0.228 vegetabl

B3 (FC)-52

ESA Taxa HUC 2


HUCs?

Stream Miles



Species Range,

All HUCs

(miles)

Threshold Value2

(ug/L)


esAquatic Amphibians 12 7610 Salado Salamander No 570 1022 1022 0.228 orchards

Freshwater Fish 12 7670 Smalleye Shiner No 557 1109 1109 0.228vegetables

Aquatic Reptiles 4 7800 Eastern Massasauga (=rattlesnake) Yes 31867 40794 80434 0.228vegetables



Mollusks 5 7816 Sheepnose Mussel Yes 2110 2546 8189 0.044 nurseries

Mollusks 6 7816 Sheepnose Mussel Yes 917 1137 8189 0.044vegetables

Mollusks 7 7816 Sheepnose Mussel Yes 1139 1581 8189 0.044vegetables

Mollusks 8 7816 Sheepnose Mussel Yes 1401 2827 8189 0.044 orchardsMollusks 10 7816 Sheepnose Mussel Yes 38 98 8189 0.044 nurseriesFreshwater Fish 17 7834 Chinook salmon No 857 10332 10332 0.228 orchardsAquatic Amphibians 11 7847 Ozark Hellbender No 186 12916 12916 0.228 orchards


Freshwater Fish 3 7949 Southern kidneyshell No 8397 14225 14225 0.228 orchardsFreshwater Fish 17 7989 Steelhead No 4376 94368 94368 0.228 orchardsFreshwater Invertebrates 13 8172 Diminutive Amphipod No 546 3525 3525 0.044 orchardsAquatic Amphibians 12 8231 Jollyville Plateau Salamander No 759 2165 2165 0.228 orchardsFreshwater Fish 17 8241 Chinook salmon No 6443 9103 9103 0.228 orchards

Freshwater Fish 17 8278 Sockeye salmon No 55 709 709 0.228vegetables

Marine Fish 6 8349 Purple Cat's paw No 334 1746 1746 0.228vegetables


B3 (FC)-53

ESA Taxa HUC 2


HUCs?

Stream Miles



Species Range,

All HUCs

(miles)

Threshold Value2

(ug/L)


Freshwater Invertebrates 3 8434 Black mudalia Yes 515 1094 1137 0.044vegetables

Freshwater Invertebrates 6 8434 Black mudalia Yes 10 43 1137 0.044vegetables

Freshwater Fish 3 8442 Sicklefin redhorse Yes 0 138 3285

Freshwater Fish 6 8442 Sicklefin redhorse Yes 1462 3146 3285 0.228vegetables

Freshwater Fish 13 8561 Headwater chub Yes 0 2426 34636Freshwater Fish 15 8561 Headwater chub Yes 3888 32210 34636 0.228 orchards

Aquatic Amphibians 6 8765 Berry Cave salamander No 427 1297 1297 0.228vegetables

Freshwater Fish 6 8921 Boulder darter No 76 273 273 0.228vegetables

Freshwater Fish 17 9021 Coho salmon No 857 10332 10332 0.228 orchards

Freshwater Fish 6 9061 Spotfin Chub No 76 273 273 0.228vegetables

Freshwater Fish 5 9220 Laurel dace Yes 0 154 1042

Freshwater Fish 6 9220 Laurel dace Yes 344 889 1042 0.228vegetables

Freshwater Fish 6 9487Appalachian monkeyface (pearlymussel) No 194 701 701 0.228

vegetables



Mollusks 6 9490 Cumberland bean (pearlymussel) No 224 701 701 0.044vegetables

Mollusks 6 9491 Cumberlandian combshell No 14 701 701 0.044vegetables


vegetables

Mollusks 6 9493 Dromedary pearlymussel No 224 701 701 0.044 vegetabl

B3 (FC)-54

ESA Taxa HUC 2


HUCs?

Stream Miles



Species Range,

All HUCs

(miles)

Threshold Value2

(ug/L)


es

Mollusks 6 9494 Fanshell No 224 701 701 0.044vegetables

Mollusks 6 9495 Finerayed pigtoe No 224 701 701 0.044vegetables

Freshwater Fish 6 9496 Orangefoot pimpleback (pearlymussel) No 194 701 701 0.228vegetables

Mollusks 9 9497 Oyster mussel No 14 701 701 0.044vegetables

Marine Fish 9 9497 Oyster mussel No 14 701 701 0.47vegetables

Freshwater Fish 6 9498 Ring pink (mussel) No 194 701 701 0.228vegetables

Freshwater Fish 6 9499 Rough pigtoe No 194 701 701 0.228vegetables

Mollusks 6 9500 Shiny pigtoe No 224 701 701 0.044vegetables

Freshwater Fish 6 9501 White wartyback (pearlymussel) No 194 701 701 0.228vegetables

Freshwater Fish 6 9502 Duskytail darter No 194 701 701 0.228vegetables

Freshwater Fish 6 9503 Pygmy madtom No 194 701 701 0.228vegetables

Freshwater Fish 6 9504 Slender chub No 194 701 701 0.228vegetables

Freshwater Fish 6 9505 Spotfin Chub No 194 701 701 0.228vegetables


Freshwater Fish 12 9969 Smooth pimpleback No 7412 18756 18756 0.228 orchardsFreshwater Fish 17 10037 Bull Trout No 88 424 424 0.228 nurseriesFreshwater Fish 13 10052 Rio Grande Silvery Minnow Yes 3803 39279 40234 0.228 orchards

B3 (FC)-55

ESA Taxa HUC 2


HUCs?

Stream Miles



Species Range,

All HUCs

(miles)

Threshold Value2

(ug/L)


Freshwater Fish 14 10052 Rio Grande Silvery Minnow Yes 0 590 40234Freshwater Fish 15 10052 Rio Grande Silvery Minnow Yes 38 365 40234 0.47 orchardsFreshwater Fish 5 10060 Kentucky arrow darter Yes 147 5021 5027 0.228 orchardsFreshwater Fish 6 10060 Kentucky arrow darter Yes 0 6 5027

Freshwater Fish 1 10077 Atlantic salmon No 13788 18448 18448 0.228vegetables

Aquatic-dependent Birds 3 10124 Whooping crane Yes 0 1850 66201Aquatic-dependent Birds 8 10124 Whooping crane Yes 12889 55848 66201 0.228 orchards



Freshwater Invertebrates 10 10130 Arapahoe snowfly Yes 669 4905 4908 0.044vegetables

Freshwater Invertebrates 14 10130 Arapahoe snowfly Yes 0 3 4908Freshwater Fish 10 10150 Eulachon Yes 0 5 192214Freshwater Fish 17 10150 Eulachon Yes 21082 145343 192214 0.228 orchards

Freshwater Fish 18 10150 Eulachon Yes 3672 46866 192214 0.228vegetables

Freshwater Fish 1 10297 Atlantic sturgeon Yes 29445 39178 186956 0.228vegetables






Freshwater Fish 1 10299 Atlantic sturgeon Yes 29445 39178 186956 0.228 vegetabl

B3 (FC)-56

ESA Taxa HUC 2


HUCs?

Stream Miles



Species Range,

All HUCs

(miles)

Threshold Value2

(ug/L)


es









Aquatic Amphibians 16 10517 Sierra Nevada Yellow-legged Frog Yes 6 204 2454 0.47 orchards

Aquatic Amphibians 18 10517 Sierra Nevada Yellow-legged Frog Yes 43 2250 2454 0.228vegetables

Freshwater Fish 17NMFS88 Steelhead No 1458 13305 13305 0.228

vegetables

1. Column header definitionsESA Taxa – taxa assigned to species. In some cases, a species may be assigned to multiple taxa if they can inhabit freshwater and estuarine/marine environments.HUC 2 – hydrologic unit code assessedEntity ID – identification number for speciesSpecies common nameMultiple HUCs? – Does the species range include multiple HUC 2s. Yes/No answer.Stream Miles Affected in HUC (miles) – indicates the number of miles in the species range, in the HUC 2, where the downstream dilution EEC exceeds the specified threshold.Species Range, All HUCs (miles) – indicates the species range, in miles, spanning all HUC2s.

B3 (FC)-57

Threshold value (ug/L) – indicates the threshold value, applicable to the species, which was used to generate the number of stream miles affected in the HUC.Use Impacting Species – the Pesticide in Water Calculator (PWC) modeled scenario that generated the number of stream miles affected

2. Endpoint values correspond to the following effectsDirect effects to fish and amphibians – 0.47 µg/L (reproduction) Indirect effects to fish and amphibians – 0.47 µg/L (reproduction)Direct effects to aquatic invertebrates – 0.044 µg/L (mortality) Indirect effects to aquatic invertebrates – 0.228 µg/L (fecundity)Direct effects to aquatic plants – 500 µg/L (NOEC, decrease biomass) Indirect effects to aquatic plants – 3,700 µg/L (EC50, decreased biomass)

B3 (FC)-58

Table B 3-5.3. Step 2 Downstream Dilution Determinations Based on Species Critical Habitat1

ESA Taxa HUC 2 Entity ID Species Common Name Multiple

HUCs?

Stream Miles


Species Range in

HUC (miles)

Species Range, All

HUCs (miles)

Threshold Value2

(ug/L)

Use Impacting

Species

Marine Mammals 3 7 West Indian Manatee No 1758 4069 4069 0.228 orchardsMarine Mammals 3 29 Rice rat No 9 51 51 0.228 orchardsAquatic-dependent Birds 11 67 Whooping crane Yes 149 301 1194 0.228 vegetablesAquatic-dependent Birds 10 67 Whooping crane Yes 288 641 1194 0.228 vegetablesAquatic-dependent Birds 12 67 Whooping crane Yes 10 252 1194 0.228 vegetablesAquatic-dependent Birds 9 130 Piping Plover Yes 46 81 3693 0.228 vegetablesAquatic-dependent Birds 10 130 Piping Plover Yes 0 3611 3693Aquatic-dependent Birds 8 131 Piping Plover Yes 4 194 1373 0.228 orchardsAquatic-dependent Birds 3 131 Piping Plover Yes 16 707 1373 0.228 orchardsAquatic-dependent Birds 12 131 Piping Plover Yes 10 472 1373 0.47 orchardsAquatic-dependent Birds 18 132 Western snowy plover Yes 25 423 597 0.47 nurseriesAquatic-dependent Birds 17 132 Western snowy plover Yes 14 175 597 0.47 nurseriesAquatic Reptiles 3 176 American crocodile No 38 894 894 0.47 orchardsAquatic Amphibians 12 194 San Marcos salamander No 1 2 2 0.47 orchardsAquatic Amphibians 18 204 Arroyo (=arroyo southwestern) toad No 281 1781 1781 0.228 vegetablesAquatic Amphibians 18 205 California red-legged frog No 184 4690 4690 0.228 orchardsAquatic Amphibians 13 206 Chiricahua leopard frog Yes 32 49 429 0.47 orchardsAquatic Amphibians 15 206 Chiricahua leopard frog Yes 123 380 429 0.47 orchardsAquatic Amphibians 18 207 Mountain yellow-legged frog No 10 135 135 0.47 vegetablesFreshwater Fish 15 209 Humpback chub Yes 158 401 799 0.228 orchardsFreshwater Fish 14 209 Humpback chub Yes 70 398 799 0.47 vegetablesFreshwater Fish 2 212 Maryland darter No 11 11 11 0.47 orchardsFreshwater Fish 14 215 Colorado pikeminnow (=squawfish) No 761 2336 2336 0.228 vegetablesFreshwater Fish 12 228 Fountain darter No 5 11 11 0.47 nurseriesFreshwater Fish 15 234 Woundfin No 116 219 219 0.228 vegetablesFreshwater Fish 6 235 Snail darter No 13 14 14 0.47 vegetablesFreshwater Fish 6 237 Spotfin Chub No 321 630 630 0.228 vegetablesFreshwater Fish 6 239 Slackwater darter No 59 111 111 0.228 vegetablesFreshwater Fish 3 242 Cape Fear shiner No 28 36 36 0.228 orchardsFreshwater Fish 3 243 Waccamaw silverside No 6 9 9 0.47 orchardsFreshwater Fish 6 246 Slender chub No 217 346 346 0.228 vegetables

B3 (FC)-59


HUCs?

Stream Miles


Species Range in

HUC (miles)

Species Range, All

HUCs (miles)

Threshold Value2

(ug/L)

Use Impacting

Species

Freshwater Fish 15 249 Bonytail chub Yes 148 399 799 0.47 vegetablesFreshwater Fish 14 249 Bonytail chub Yes 72 400 799 0.228 vegetablesFreshwater Fish 12 250 San Marcos gambusia No 5 10 10 0.47 nurseriesFreshwater Fish 13 251 Leon Springs pupfish No 25 25 25 0.47 orchardsFreshwater Fish 3 252 Alabama sturgeon No 369 405 405 0.228 orchardsFreshwater Fish 15 255 Sonora chub No 9 18 18 0.47 orchardsFreshwater Fish 15 256 Virgin River Chub No 116 219 219 0.228 vegetablesFreshwater Fish 10 257 Niangua darter No 43 268 268 0.228 nurseriesFreshwater Fish 6 258 Smoky madtom No 1.2 15 15 0.228 vegetablesFreshwater Fish 15 259 Yaqui catfish No 2 2 2 0.47 orchardsFreshwater Fish 15 263 Yaqui chub No 2 2 2 0.47 orchardsFreshwater Fish 13 272 Devils River minnow No 18 46 46 0.47 orchardsFreshwater Fish 15 273 Loach minnow No 783 1749 1749 0.228 orchardsFreshwater Fish 18 275 Desert pupfish No 16 29 29 0.228 vegetablesFreshwater Fish 15 276 Beautiful shiner No 2 2 2 0.47 orchardsFreshwater Fish 13 279 Pecos bluntnose shiner No 164 210 210 0.228 orchardsFreshwater Fish 15 281 Little Colorado spinedace No 7 108 108 0.47 orchardsFreshwater Fish 8 286 Gulf sturgeon Yes 564 294 3439 0.228 vegetablesFreshwater Fish 3 286 Gulf sturgeon Yes 1383 3145 3439 0.228 vegetablesFreshwater Fish 16 287 June sucker No 14 14 14 0.47 orchardsFreshwater Fish 18 288 Lost River sucker No 112 209 209 0.47 vegetablesFreshwater Fish 18 289 Modoc Sucker No 13 46 46 0.47 vegetablesFreshwater Fish 15 290 Razorback sucker Yes 1110 2521 4334 0.228 orchardsFreshwater Fish 14 290 Razorback sucker Yes 707 1813 4334 0.228 vegetablesFreshwater Fish 18 291 Shortnose Sucker No 115 306 306 0.47 vegetablesFreshwater Fish 17 292 Warner sucker No 14 105 105 0.228 nurseriesFreshwater Fish 3 293 Amber darter No 44 63 63 0.228 orchardsFreshwater Fish 3 294 Conasauga logperch No 9 27 27 0.228 orchardsFreshwater Fish 15 296 Spikedace No 765 1788 1788 0.228 orchardsFreshwater Fish 11 299 Arkansas River shiner No 710 984 984 0.228 vegetablesFreshwater Fish 9 301 Bull Trout Yes 0 185 45195Freshwater Fish 18 301 Bull Trout Yes 120 496 45195 0.228 vegetables

B3 (FC)-60


HUCs?

Stream Miles


Species Range in

HUC (miles)

Species Range, All

HUCs (miles)

Threshold Value2

(ug/L)

Use Impacting

Species

Freshwater Fish 17 301 Bull Trout Yes 5690 44515 45195 0.228 orchardsFreshwater Fish 17 304 Oregon chub No 6 11 11 0.47 orchardsFreshwater Fish 18 305 Delta smelt No 543 4877 4877 0.228 nurseriesFreshwater Fish 18 306 Tidewater goby No 90 437 437 0.228 nurseriesFreshwater Fish 13 309 Rio Grande Silvery Minnow No 191 341 341 0.228 orchardsFreshwater Fish 10 311 Topeka shiner Yes 2054 5557 12351 0.228 vegetablesFreshwater Fish 7 311 Topeka shiner Yes 4050 6793 12351 0.228 vegetablesFreshwater Fish 18 312 Santa Ana sucker No 89 336 336 0.228 nurseriesFreshwater Fish 17 314 White sturgeon No 19 22 22 0.47 vegetablesFreshwater Fish 3 316 Vermilion darter No 4 20 20 0.228 vegetablesMollusks 6 318 Purple bean No 317 386 386 0.044 vegetablesMollusks 6 344 Rough rabbitsfoot No 275 334 334 0.044 vegetablesMarine Fish 5 353 Cumberlandian combshell Yes 122 215 651 0.228 vegetablesMarine Fish 6 353 Cumberlandian combshell Yes 0 437 651Freshwater Fish 6 354 Appalachian elktoe No 237 282 282 0.47 vegetablesMollusks 5 355 Cumberland elktoe No 126 235 235 0.044 vegetablesMollusks 3 357 Orangenacre mucket No 681 1196 1196 0.044 orchardsMarine Fish 5 358 Oyster mussel Yes 122 215 651 0.228 vegetablesMarine Fish 6 358 Oyster mussel Yes 0 437 651Freshwater Fish 3 365 Southern acornshell No 390 643 643 0.228 vegetablesMarine Fish 3 366 Purple bankclimber (mussel) No 1475 1515 1515 0.47 orchardsFreshwater Fish 3 367 Upland combshell No 469 743 743 0.228 vegetablesFreshwater Fish 3 370 Carolina heelsplitter No 130 211 211 0.228 orchardsMollusks 3 371 Oval pigtoe No 1743 1858 1858 0.044 orchardsMollusks 3 372 Finelined pocketbook No 660 1056 1056 0.044 vegetablesMollusks 3 373 Shinyrayed pocketbook No 1708 1769 1769 0.044 orchardsMollusks 3 375 Fat threeridge (mussel) No 739 770 770 0.044 orchardsFreshwater Fish 3 377 Ovate clubshell No 755 1695 1695 0.228 vegetablesMollusks 3 378 Southern clubshell No 975 1473 1473 0.044 vegetablesMollusks 3 379 Triangular Kidneyshell No 587 1071 1071 0.044 vegetablesMollusks 3 380 Alabama moccasinshell No 786 1372 1372 0.044 orchardsFreshwater Fish 3 381 Coosa moccasinshell No 325 603 603 0.228 vegetables

B3 (FC)-61


HUCs?

Stream Miles


Species Range in

HUC (miles)

Species Range, All

HUCs (miles)

Threshold Value2

(ug/L)

Use Impacting

Species

Mollusks 3 382 Dark pigtoe No 114 328 328 0.044 orchardsMollusks 3 383 Southern pigtoe No 393 603 603 0.044 vegetablesMollusks 3 384 Gulf moccasinshell No 1482 1528 1528 0.044 orchardsFreshwater Fish 3 385 Ochlockonee moccasinshell No 206 223 223 0.47 orchardsFreshwater Fish 3 386 Chipola slabshell No 279 302 302 0.228 orchardsFreshwater Invertebrates 18 435 Delta green ground beetle No 0.5 4 4 0.044 vegetablesFreshwater Invertebrates 11 445 Hine's emerald dragonfly Yes 0 8 140Freshwater Invertebrates 10 445 Hine's emerald dragonfly Yes 0 2 140Freshwater Invertebrates 4 445 Hine's emerald dragonfly Yes 29 95 140 0.044 vegetablesFreshwater Invertebrates 7 445 Hine's emerald dragonfly Yes 9 35 140 0.044 vegetablesFreshwater Invertebrates 12 453 Comal Springs riffle beetle No 6 6 6 0.044 nurseriesFreshwater Invertebrates 12 454 Comal Springs dryopid beetle No 7 7 7 0.044 nurseriesFreshwater Invertebrates 12 477 Peck's cave amphipod No 6 14 14 0.044 nurseriesAquatic Plants - vascular 18 580 Colusa grass No 9 668 668 500 nurseriesAquatic Plants - vascular 12 870 Texas wild-rice No 5 11 11 500 nurseriesFreshwater Invertebrates 13 1247 Koster's springsnail No 7 7 7 0.044 orchardsFreshwater Invertebrates 13 1261 Noel's Amphipod No 11 11 11 0.044 orchardsFreshwater Fish 3 1369 Fuzzy pigtoe No 2583 3132 3132 0.228 orchardsFreshwater Fish 17 1509 Chum salmon No 11 629 629 0.228 orchardsMarine Fish 5 1559 Fluted kidneyshell Yes 140 509 2037 0.228 vegetablesMarine Fish 6 1559 Fluted kidneyshell Yes 972 1528 2037 0.228 vegetablesAquatic Amphibians 18 1707 Yosemite toad Yes 0 1472 1544Aquatic Amphibians 16 1707 Yosemite toad Yes 2 72 1544 0.228 orchardsAquatic Reptiles 15 1783 Northern Mexican gartersnake No 1537 3856 3856 0.228 orchardsFreshwater Fish 6 1934 Spotfin Chub No 321 630 630 0.228 vegetablesFreshwater Fish 18 2448 Steelhead No 934 5996 5996 0.228 vegetablesFreshwater Fish 18 2514 Chinook salmon No 571 1831 1831 0.228 vegetablesFreshwater Fish 17 2528 Steelhead No 688 1728 1728 0.228 vegetablesFreshwater Invertebrates 3 2561 Interrupted (=Georgia) Rocksnail No 53 63 63 0.044 orchardsFreshwater Fish 18 2842 Steelhead No 395 2265 2265 0.228 nurseriesAquatic Reptiles 15 3271 Narrow-headed garter snake No 1341 4152 4152 0.228 orchardsFreshwater Fish 15 3280 Zuni bluehead Sucker Yes 104 258 458 0.47 vegetables

B3 (FC)-62


HUCs?

Stream Miles


Species Range in

HUC (miles)

Species Range, All

HUCs (miles)

Threshold Value2

(ug/L)

Use Impacting

Species

Freshwater Fish 14 3280 Zuni bluehead Sucker Yes 103 201 458 0.228 vegetablesFreshwater Invertebrates 3 3364 Rough hornsnail No 22 35 35 0.044 orchardsFreshwater Fish 3 3525 Rush Darter No 18 47 47 0.228 vegetablesFreshwater Fish 11 3596 Sharpnose Shiner No 69 986 986 0.47 orchardsMollusks 11 3645 Rabbitsfoot Yes 419 854 2654 0.044 orchardsMollusks 8 3645 Rabbitsfoot Yes 118 594 2654 0.044 orchardsMollusks 5 3645 Rabbitsfoot Yes 557 696 2654 0.044 vegetablesMollusks 4 3645 Rabbitsfoot Yes 13 13 2654 0.044 vegetablesMollusks 6 3645 Rabbitsfoot Yes 304 496 2654 0.044 vegetablesFreshwater Fish 18 3654 Steelhead No 475 2382 2382 0.228 nurseriesFreshwater Fish 3 3833 Georgia pigtoe No 67 156 156 0.228 vegetablesFreshwater Fish 3 4042 Choctaw bean No 2583 3132 3132 0.228 orchardsMollusks 11 4086 Neosho Mucket No 469 960 960 0.044 vegetablesFreshwater Fish 18 4093 green sturgeon Yes 119 438 440 0.228 vegetablesFreshwater Fish 17 4093 green sturgeon Yes 0 2 440Freshwater Fish 17 4112 Steelhead No 1942 2335 2335 0.228 orchardsFreshwater Fish 3 4210 Altamaha Spinymussel No 158 158 158 0.47 orchardsFreshwater Fish 18 4274 Steelhead No 1001 3668 3668 0.228 nurseriesFreshwater Fish 3 4411 Alabama pearlshell No 198 349 349 0.228 orchardsFreshwater Invertebrates 13 4437 Diamond Tryonia No 25 25 25 0.044 orchardsFreshwater Invertebrates 13 4479 Phantom Springsnail No 2 6 6 0.044 orchardsFreshwater Invertebrates 15 4766 Three Forks Springsnail No 0.5 7 7 0.044 vegetablesFreshwater Fish 17 4799 Chinook salmon No 781 5581 5581 0.228 vegetablesFreshwater Fish 3 4881 Smalltooth sawfish No 655 2397 2397 0.228 orchardsFreshwater Invertebrates 10 4910 Salt Creek Tiger beetle No 31 53 53 0.044 vegetablesFreshwater Fish 18 4992 Chinook salmon No 601 3040 3040 0.228 vegetablesFreshwater Fish 17 5180 Chum salmon No 294 968 968 0.228 orchardsFreshwater Fish 17 5265 Coho salmon No 4632 6743 6743 0.228 orchardsFreshwater Invertebrates 13 5362 Gonzales tryonia No 25 25 25 0.044 orchardsAquatic Amphibians 12 5434 Georgetown Salamander No 5 21 21 0.228 nurseriesFreshwater Fish 18 5658 Steelhead No 175 1540 1540 0.228 nurseriesFreshwater Fish 5 5719 Cumberland darter No 4 113 113 0.228 vegetables

B3 (FC)-63


HUCs?

Stream Miles


Species Range in

HUC (miles)

Species Range, All

HUCs (miles)

Threshold Value2

(ug/L)

Use Impacting

Species

Freshwater Fish 17 5815 Steelhead No 573 11405 11405 0.228 orchardsFreshwater Fish 6 5981 Smoky madtom No 2 15 15 0.228 orchardsFreshwater Invertebrates 13 6138 Phantom Tryonia No 2 6 6 0.044 orchardsFreshwater Fish 17 6220 Steelhead No 460 3651 3651 0.228 orchardsFreshwater Fish 15 6297 Gila chub No 164 439 439 0.228 orchardsAquatic Amphibians 12 6346 Austin blind Salamander No 3 3 3 0.47 nurseriesFreshwater Fish 3 6534 Tapered pigtoe No 1317 1540 1540 0.228 orchardsFreshwater Fish 5 6557 diamond Darter No 103 198 198 0.228 vegetablesFreshwater Invertebrates 13 6596 Pecos amphipod No 25 25 25 0.044 orchardsFreshwater Fish 11 6662 Yellowcheek Darter No 1 118 118 0.47 nurseriesMollusks 6 6841 Slabside Pearlymussel No 1096 1771 1771 0.044 vegetablesFreshwater Fish 17 6843 Sockeye salmon No 1 75 75 0.47 vegetablesFreshwater Fish 6 7150 Chucky Madtom No 40 57 57 0.47 vegetablesFreshwater Fish 3 7177 Narrow pigtoe No 1290 1620 1620 0.228 orchardsFreshwater Fish 3 7349 Southern sandshell No 2583 3132 3132 0.228 orchardsFreshwater Fish 3 7363 Round Ebonyshell No 564 724 724 0.228 orchardsFreshwater Fish 17 7590 Chinook salmon No 532 1220 1220 0.228 vegetablesAquatic Amphibians 12 7610 Salado Salamander No 3 7 7 0.47 vegetablesFreshwater Fish 12 7670 Smalleye Shiner No 706 986 986 0.228 orchardsFreshwater Fish 17 7834 Chinook salmon No 502 2081 2081 0.228 orchardsFreshwater Fish 3 7949 Southern kidneyshell No 2294 2760 2760 0.228 orchardsFreshwater Fish 17 7989 Steelhead No 1583 16436 16436 0.228 orchardsFreshwater Invertebrates 13 8172 Diminutive Amphipod No 2 6 6 0.044 orchardsAquatic Amphibians 12 8231 Jollyville Plateau Salamander No 9 40 40 0.47 nurseriesFreshwater Fish 17 8241 Chinook salmon No 2338 2844 2844 0.228 orchardsFreshwater Fish 6 9061 Spotfin Chub No 321 630 630 0.228 vegetablesFreshwater Fish 6 9220 Laurel dace No 18 43 43 0.47 vegetablesFreshwater Fish 6 9504 Slender chub No 217 346 346 0.228 vegetablesFreshwater Fish 6 9505 Spotfin Chub No 321 630 630 0.228 vegetablesFreshwater Fish 1 10077 Atlantic salmon No 8515 10418 10418 0.228 vegetablesFreshwater Fish 18 10150 Eulachon Yes 43 61 463 0.47 vegetablesFreshwater Fish 17 10150 Eulachon Yes 220 402 463 0.228 orchards

B3 (FC)-64


HUCs?

Stream Miles


Species Range in

HUC (miles)

Species Range, All

HUCs (miles)

Threshold Value2

(ug/L)

Use Impacting

Species

Aquatic Amphibians 18 10517 Sierra Nevada Yellow-legged Frog Yes 43 2250 2454 0.228 vegetablesAquatic Amphibians 16 10517 Sierra Nevada Yellow-legged Frog Yes 6 204 2454 0.47 orchards

1. See footnotes for Table 3-5.2 for column header definitions and threshold values.

B3 (FC)-65

Table B 3-5.4. Species where downstream dilution concentrations were below all thresholds

Entity ID Relevant HUC2s ESA Taxa Species Common Name

Range211 15 Freshwater fish Moapa dace220 14 Freshwater fish Apache trout226 15 Freshwater fish Pahranagat roundtail chub227 14 Freshwater fish Kendall Warm Springs dace247 5 Freshwater fish Yellowfin madtom248 18 Freshwater fish Little Kern golden trout265 16 Freshwater fish Clover Valley speckled dace268 16 Freshwater fish Independence Valley speckled dace280 15 Freshwater fish Big Spring spinedace282 15 Freshwater fish White River spinedace283 15 Freshwater fish Hiko White River springfish284 16 Freshwater fish Railroad Valley springfish285 15 Freshwater fish White River springfish 313 8 Freshwater fish Relict darter363 1, 3, 4, 9 Mollusk Dwarf wedgemussel369 8, 11 Mollusk Arkansas fatmucket401 5 Freshwater invertebrate Royal marstonia (snail)409 17 Freshwater invertebrate Banbury Springs limpet517 16 Aquatic plant Chinese Camp brodiaea

1740 16, 18 Aquatic amphibian Mountain yellow-legged frog2956 5 Freshwater fish Yellowfin madtom 3596 11 Freshwater fish Sharpnose Shiner4496 5 Freshwater fish Yellowfin madtom9506 5 Freshwater fish Yellowfin madtom9967 9 Mollusk Texas fawnsfoot9968 9 Mollusk Texas pimpleback

10038 9 Mollusk Texas fatmucket10039 9 Mollusk Golden orb

Critical Habitat238 11 Freshwater fish Leopard darter247 5 Freshwater fish Yellowfin madtom248 18 Freshwater fish Little Kern golden trout262 18 Freshwater fish Owens tui chub264 18 Freshwater fish Ash Meadows speckled dace266 16 Freshwater fish Desert dace274 18 Freshwater fish Ash Meadows Amargosa pupfish280 15 Freshwater fish Big Spring spinedace282 15 Freshwater fish White River spinedace283 15 Freshwater fish Hiko White River springfish

B3 (FC)-66

Entity ID Relevant HUC2s ESA Taxa Species Common Name

284 16 Freshwater fish Railroad Valley springfish285 15 Freshwater fish White River springfish406 11 Freshwater invertebrate Tumbling Creek cavesnail

1740 16, 18 Aquatic amphibian Mountain yellow-legged frog3596 11 Freshwater fish Sharpnose Shiner

B3 (FC)-67

Documents

United States Environmental Protection Agency · Web viewAppendix 3-5. Downstream Dilution Tool Results. Introduction. The Downstream Dilution Tool is a GIS-based algorithm designed