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INTERNATIONAL ST. CROIX RIVER WATERSHED BOARD ANNUAL REPORT 2015 ST. CROIX RIVER MAINE AND NEW BRUNSWICK

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INTERNATIONAL ST. CROIX RIVER

WATERSHED BOARD

ANNUAL REPORT

2015

ST. CROIX RIVER MAINE AND NEW BRUNSWICK

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2015 ANNUAL REPORT

OF THE

INTERNATIONAL ST. CROIX RIVER WATERSHED BOARD

Covering The Orders of Approval with respect to the control of the discharge of the St. Croix River

at Forest City, Vanceboro, and the water levels of East Grand Lake, Spednic Lake, Grand Falls Flowage and Milltown Dam Forebay

&

The Water Quality and Aquatic Ecosystem Health of the

St. Croix River Boundary Waters

SUBMITTED TO

THE INTERNATIONAL JOINT COMMISSION

BY

THE INTERNATIONAL ST. CROIX RIVER WATERSHED BOARD

Prepared March 2016

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TABLE OF CONTENTS

1.0 GENERAL ............................................................................................................................... 1 

1.1 Synopsis for 2015 .................................................................................................................. 1 

1.2 Board Membership................................................................................................................ 2 

1.3 Annual Public Meeting in Basin ........................................................................................... 3 

1.4 Annual Site Visit of Facilities in the Basin ........................................................................... 4 

1.5 Policy of the Board Regarding Dam Regulation .................................................................. 4 

2.0 MANAGEMENT OF WATER LEVELS AND FLOWS .................................................... 5 

2.1 Summary ............................................................................................................................... 5 

2.2 East Grand Lake Reservoir and Discharges Below Forest City Dam.................................. 5 

2.3 Spednic Lake Reservoir and Discharges below Vanceboro Dam ........................................ 6 

2.4 Water Levels above Grand Falls Dam .................................................................................. 6 

2.5 Discharges at Baring, Maine ................................................................................................ 6 

2.6 Headwater Elevations above Milltown Dam ........................................................................ 7 

3.0 WATER QUALITY ................................................................................................................ 8 

3.1 USGS Milltown Monitor ....................................................................................................... 8 

3.2 Environment Canada Monitoring Stations – Forest City and Milltown ............................... 9 

4.0 STATUS OF POLLUTION ABATEMENT ....................................................................... 17 

4.1 Maine .................................................................................................................................. 17 

4.2 New Brunswick.................................................................................................................... 18 

5.0 FISHERIES ........................................................................................................................... 19 

5.1 Anadromous Fisheries ........................................................................................................ 19 

5.2 Shellfish Harvesting ............................................................................................................ 23 

6.0 IJC INTERNATIONAL WATERSHED INITIATIVES .................................................. 24 

6.1 Ongoing Aquatic Food-Web Study ..................................................................................... 24 

6.2 Alewife Count at Milltown .................................................................................................. 25 

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7.0 ADDITIONAL ITEMS TO REPORT ................................................................................ 25 

7.1 FERC Dam Relicensing ...................................................................................................... 25 

7.2 USGS Tide Gage Station ..................................................................................................... 27 

ACKNOWLEDGEMENTS ....................................................................................................... 28 

APPENDIX 1 Summary Orders of Approval and Basin Map

APPENDIX 2 Milltown, Grand Falls, Vanceboro and Forest City Dams

APPENDIX 3 Water Levels and Flows

APPENDIX 4 Hydrographs

APPENDIX 5 Water Quality Data

APPENDIX 6 Milltown Fish Trap Data

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1.0 GENERAL 1.1 Synopsis for 2015 In 2015, water quality in the system remained in good to excellent condition with respect to aquatic life. 2015 was an above average year for water flows on the St. Croix River system. Peak flows occurred in April and October, as measured at the Baring water flow gage in the lower river. During the year, reservoir levels and flows were operated within prescribed levels. Reservoir levels and flows in the river provided satisfactory conditions for power generation, canoeing, kayaking and support of aquatic life. The Board held its annual public meeting on the evening of June 10, 2015 in St. Stephen, New Brunswick. On the same day, the Board held its June Board meeting with invited guests that included leaders and members of the Passamaquoddy Tribe and representatives from local organizations. In 2015 the Board continued its interest in supporting water resource and ecosystem restoration research in the St. Croix River watershed.

St. Croix Board and IJC Commissioners at Milltown Dam June 2015

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1.2 Board Membership

International St. Croix River Watershed Board - Membership

Canadian Section U.S. Section

Bill Appleby, Canadian Co-Chair Director, Prediction Services Operations East, Meteorological Service of Canada Environment & Climate Change Canada Dartmouth, Nova Scotia

Colonel Christopher Barron, U.S. Co-Chair District Engineer U.S. Army Corps of Engineers New England District Concord, Massachusetts

Donald Fox, Ph.D. Provincial Water Quality Specialist NB Department of Environment & Local Government Fredericton, New Brunswick

Ralph Abele Chief Water Quality Branch EPA New England, Region 1 Boston, Massachusetts

Jessie Davies 4 O'Neill Farm Road St. Andrews, New Brunswick

Susanne Miller, J.D. Regional Director, Eastern Maine Office, Department of Environmental Protection Bangor, Maine

Geoff Mercer Associate Regional Director General Environment & Climate Change Canada Dartmouth, Nova Scotia

Oliver Cox Director, Division of Sea Run Fisheries and Habitat Maine Department of Marine Resources Bangor, Maine

Robert Stephenson, Ph.D. Principal Investigator, Canadian Capture Fisheries Research Network Visiting Research Professor, University of New Brunswick Research Scientist, St. Andrews Biological Station, St. Andrews, New Brunswick

Robert Lent, Ph.D. Maine District Chief United States Geology Survey Augusta, Maine

Secretariat

Kathryn Parlee Environment & Climate Change Canada Dartmouth, Nova Scotia

Barbara Blumeris U.S. Army Corps of Engineers New England District Concord, Massachusetts

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The International St. Croix River Watershed Board (Board) was established to assist the International Joint Commission. The International Joint Commission (IJC) is a binational United States-Canada organization established under the Boundary Waters Treaty of 1909. The Board has ten members with an equal number of members from the United States and Canada. Board members are appointed by the IJC and serve the Commission in their personal and professional capacity and not as representatives of their agencies. Board Member Changes: In 2015, Canadian Board Member, Mr. Darryl Pupek resigned from the Board. Mr. Donald Fox was appointed by the IJC in January 2016 as the new member to replace Mr. Pupek. Current Board membership is provided on page 2. 1.3 Annual Public Meeting in Basin

FIGURE 1. Annual Public Meeting in St. Stephen, New Brunswick, June 2015 The Board’s annual public meeting was held in St. Stephen, New Brunswick at the Garcelon Civic Center on the evening of June 10. The meeting began at about 7:00 pm Atlantic time. There were approximately 27 people in attendance. IJC Commissioner and Canadian Co-Chair Gordon Walker and Board Co-Chair Bill Appleby welcomed attendees and provided brief opening remarks. Commissioner Gordon noted that the public meeting was an opportunity for the Commissioners to receive local input on the St. Croix River boundary water. Following opening remarks, the Board Co-Chairs, Bill Appleby and Colonel Christopher Barron provided a presentation that summarized Board activities in calendar year 2015. Next were informational presentations by Aaron

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Dowding, Nature Trust of New Brunswick; David Montague Down East Lake Land Trust; Graham Chafe, Atlantic Salmon Federation; and Abby Pond, St. Croix Waterway Commission. There was general discussion of the information presented. Following the presentations, there was an opportunity for public comment on the St. Croix River boundary water. There were no comments and the public meeting concluded at about 9:00 pm. 1.4 Annual Site Visit of Facilities in the Basin Board members met with New Brunswick Power Corporation officials on the morning of June 11 to tour the Milltown Dam operations in New Brunswick. On the same day, Board members met with Woodland Pulp, LLC officials in the Woodland Mill at Baileyville, Maine and then toured the Grand Falls, Forest City and Vanceboro sites (visit notes and information describing the dams are provided in Appendix 2). It is the responsibility of the dam owners, operators and appropriate jurisdictional agencies to conduct the necessary dam inspections and maintenance to ensure the safety and security of the dams. 1.5 Policy of the Board Regarding Dam Regulation In accordance with its mandate from the IJC, the Board leaves the control of operation of the dams at Forest City, Vanceboro and Grand Falls (owned and operated by Woodland Pulp, LLC) and Milltown (owned and operated by New Brunswick Power) to the owners. During the 2015 reporting period, the Board reviewed conditions prevailing in the river by the following means:

a continuous record of water elevations of East Grand Lake and a continuous record of discharge below Forest City Dam

a continuous record of water elevations of Spednic Lake and a continuous record of discharge at Vanceboro

a continuous record of water levels above the dam at Grand Falls

a continuous record of discharge at Baring

monthly reports from New Brunswick Power indicating daily forebay elevations obtained during regular work days at the Milltown Dam

water level data from a continuous monitoring station in the head pond at Milltown Dam operated by Environment Canada

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2.0 MANAGEMENT OF WATER LEVELS AND FLOWS 2.1 Summary In 2015, the annual mean water level at East Grand Lake was 131.964 meters (432.95 feet), which is higher than the long term mean value of 131.824 meters (432.49 feet). The annual mean flow from the lake at Forest City Stream was 6.75 m3/s (238 cfs), 1.33 % higher than the long term mean value of 6.66 m3/s (235 cfs). The annual mean water level for the year at Spednic Lake was 116.613 meters (382.59 feet), higher than the long term mean value of 116.330 meters (381.66 feet). The annual mean flow as recorded at Vanceboro was 24.1 m3/s (851 cfs), 13% higher than the long term mean value of 21.0 m3/s (742 cfs). The annual mean water level at Grand Falls Flowage was 61.759 meters (222.31), which is slightly lower than the long term mean value of 61.764 meters (202.64 feet). The annual mean flow at Baring was 76.9 m3/s (2716 cfs), which is 1.4% higher than the long term mean value at Baring of 75.8 m3/s (2677 cfs). 2.2 East Grand Lake Reservoir and Discharges Below Forest City Dam During the period from January 1 to December 31, East Grand Lake reservoir was operated between a maximum daily mean water level of 132.425 meters (434.47 feet) on June 3rd and a minimum daily mean of 131.580 meters (431.69 feet) on October 28th. The maximum water level as prescribed by the Commission’s Order is 132.571 meters (434.94 feet); the minimum is 130.436 meters (427.94 feet). The Order was maintained throughout the year. The daily mean water levels are presented in Table I and Figure I in Appendix 3 and 4. Table II and Figure II in Appendix 3 and 4 present the daily mean discharges below the Forest City Dam at the outlet of East Grand Lake for 2015. The maximum daily mean flow for the reporting period was 20.1 m3/s (710 cfs) on October 8th and the minimum daily mean was 2.65 m3/s (93.6 cfs) on December 3rd. The mean discharge for the year was 6.75 m3/s (238 cfs). The Commission’s Order of 2.12 m3/s (75 cfs) as a minimum flow was maintained throughout the year

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2.3 Spednic Lake Reservoir and Discharges below Vanceboro Dam During the year, levels in the Spednic Lake reservoir, ranged from a maximum daily mean water level of 117.279 meters (384.77 feet) on May 13th, to a minimum daily mean water level of 115.585 meters (379.22 feet) on April 10th. The maximum limit specified in the Commission’s Order is 117.610 meters (385.86 feet). The allowable minimum level is 113.233 meters (371.50 feet) for the period January 1 to April 30 and October 1 to December 31 inclusive, and 114.757 meters (376.50 feet) for the period May 1 to September 30 inclusive. These orders were maintained throughout the year. The daily mean elevations for the Spednic Lake Reservoir during the year are presented in Table III and Figure III in Appendix 3 and 4. The maximum daily mean discharge recorded from the outflow at the reservoir at Vanceboro was 51.0 m3/s (1800 cfs) on January 1st and the minimum daily mean discharge recorded was 9.77 m3/s (345), on April 18th. The Commission’s Order of a minimum flow of 5.66 m3/s (200 cfs) was maintained throughout the year. Daily mean discharges are presented in Table IV and Figure IV in Appendix 3 and 4. 2.4 Water Levels above Grand Falls Dam Table V and Figure V in Appendix 3 and 4 include water level elevations of the headpond above the Grand Falls Dam. The recorded maximum daily mean elevation was 62.018 meters (203.47 feet) on October 2nd and the minimum recorded elevation was 61.410 meters (201.48 feet) on April 1st. The maximum prescribed elevation of 62.106 meters (203.76 feet), as set by the Commission, was maintained throughout the year. 2.5 Discharges at Baring, Maine Table VI and Figure VI in Appendix 3 and 4 present the daily mean discharges of the St. Croix River at Baring, Maine. The mean discharge for the report period was 76.9 m3/s (2720 cfs). The maximum daily mean was 365 m3/s (12,900 cfs) on October 2nd. The minimum daily mean was 28.1 m3/s (992 cfs) on August 18th. Woodland Pulp LLC met the minimum flow requirements set at 21.2 m3/s (750 cfs); this is the minimum flow requirement as considered by the Maine Department of Environmental Protection.

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2.6 Headwater Elevations above Milltown Dam Table VII and Figure VII in Appendix 3 and 4 present and depict daily water elevations above Milltown Dam. The supplied data for 2015 was extracted from the gage station located on the headpond.

FIGURE 2. Milltown Dam looking upstream from Gate House

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3.0 WATER QUALITY

3.1 USGS Milltown Monitor  

Water-quality values for the St. Croix River at the Milltown monitor were within the extreme values for the period of daily record during the summer of 2015 based on the historic record since September 1969. Dissolved oxygen values met the IJC objective as noted below.

TABLE 1

St. Croix River at Milltown, USGS Station # 01021050 Water-Quality Monitor, June – September 2015.

Dissolved Oxygen (mg/L) IJC objective = 5.0 mg/L minimum

Maximum for the season: 9.5 mg/L Minimum for the season: 6.5 mg/L

June July August September Maximum 9.5 8.6 8.6 9.1 Minimum 8.1 7.1 6.6 6.5

Mean 8.6 7.8 7.6 7.8  

Water Temperature (degrees Celsius) June July August September

Maximum 21.7 25.9 26.5 24.9 Minimum 15.8 19.0 22.5 17.6

Mean 18.6 22.7 24.5 21.5  

pH (standard units) June July August September

Maximum 7.0 7.2 7.2 7.1 Minimum 6.4 6.6 6.7 6.7 Median 6.8 7.0 7.0 6.9

 

Specific conductance (microsiemens per centimeter at 25 C) June July August September

Maximum 71 119 95 101 Minimum 38 43 65 55

Mean 54 79 80 78

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3.2 Environment Canada Monitoring Stations – Forest City and Milltown Environment Canada, in partnership with the New Brunswick Department of Environment, maintains two automated real-time water quality monitoring stations on the St. Croix River system. The first station is located at the Milltown Dam in Milltown (St. Stephen), New Brunswick and the second station is located in Forest City, Maine. The Milltown station records hourly measurements of temperature, dissolved oxygen, pH, specific conductance and turbidity while the Forest City station records hourly measurements of temperature and conductivity. In order to re-calibrate the measuring devices and to collect a grab sample for water quality analysis, the sites were visited every 5 to 6 weeks during the warmer months of the year, and less frequently during the colder months when fouling of the sensors is less problematic. Real time monitoring allows an observer to assess several river water quality parameters quickly at any particular moment. This can alert managers to sudden changes in the characteristics of the river and relate them to particular events such as rapid spilling of water, accidental discharges from industry, severe weather events or remote introduction of atmospheric or other pollutants which might threaten the health of aquatic organisms or humans using the river. It could also allow responsible agencies to take rapid intervention to correct the problem.

3.2.1 Interpretation of Real-Time Monitoring Data Milltown Station 2015 Monthly summaries of the real-time data and annual charts showing daily means, minimums and maximums from the Milltown station for each parameter are presented in Appendix 5. This station, operated by Environment Canada (EC), is located just above the Milltown Dam at a depth of 1.8 to 3.0 metres depending on headpond elevation. This station and the USGS station reported in Section 3.1 monitor water quality in the “urban” area below Baileyville but generally above St. Stephen/Calais. The real-time water quality station at Milltown was operational for the whole year except for an 8 week period between mid-September and mid-November when the data logger malfunctioned.

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Temperature Water temperature at the site increased gradually until it reached its maximum of

26.5◦C on August 18. The lowest temperature registered was -0.01◦C in January. The

daily mean water temperature stayed over 20◦C for 93 consecutive days between June

11 and September 14 which is approximately two weeks more than the 2012-2014 data.

Water temperature was below 5◦C for 150 days in 2015. Water temperature at this

station averaged 9.6◦C. However the average would likely be greater if not for the data

gap in autumn. Dissolved Oxygen Dissolved oxygen readings followed a similar, but inverse, trend to water temperature, reaching the lowest concentration of 7.77 mg/L on August 31, and the highest concentration of 14.77 mg/L on January 3. Dissolved oxygen averaged 11.36 mg/L during the reporting period. All dissolved oxygen values measured were above the minimum Canadian Council of Ministers of the Environment (CCME) Guideline for the Protection of Aquatic Life of 6.5 mg/L with only 8 days of values below 8 mg/L. Values fluctuated between August 24 and 31. This was probably due to the water level at the dam being lower than usual (12.7m instead of 13.3m). pH As in 2010 to 2014, measurements of pH in 2015 stayed near the CCME guideline for most of the year, except for late summer when it was closer to 7 and for parts of the spring and December when it was slightly below 6.5. The minimum pH measurement was 5.94 pH units, recorded on April 24; and the maximum pH was 7.36, recorded on August 11. Average pH at this station was 6.77 for the year of 2015. A sudden drop in recorded pH between August 24 and 31 was likely due to a rapid drawdown in water level at the dam (from 13.3m to 12.7m). Specific Conductance

Specific conductance readings fluctuated moderately between 14 and 104 μS/cm and averaged 51.2 µS/cm during 2015. These values are very similar to those of 2014.

Measurements of specific conductance reached their highest of 104 μS/cm on July 17,

and their lowest of 14 μS/cm on January 2. A sharp drop in specific conductance is usually associated with a rise in stream height or volume.

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Turbidity Daily mean turbidity values stayed below 1 NTU over 50% of measurements (172 days), although turbid events (spikes) occurred once or twice per month (for the period of record). Turbidity values ranged from 0 to 352 NTU and averaged 7.6 NTU. Turbidity values at the end of November were deleted because of a malfunction with the sensor. Concentrations during that time were constantly close to 300 NTU and fell to close to 0 NTU once the sonde was switched on December 1st. There was no excessive fouling or calibration drift to explain this huge difference. Forest City Station 2015 Monthly summaries of the real-time data and annual charts showing daily mean values for conductivity and temperature from the Forest City station for each parameter are presented in Appendix 5. This station, owned by Environment Canada (EC) is located immediately downstream of the dam in Forest City. The real-time water quality station at Forest City was operational for the whole year. Specific conductance The highest conductivity reading of 69.09 µS/cm was recorded on June 1 while the lowest of 26.57 µS/cm was recorded on April 24. An average of 31.19 µS/cm was recorded for the year which was similar to those levels recorded in 2013 but 10 µS/cm higher than those reported in 2014. The general trend of the specific conductance data is an increasing trend towards the summer months and a decreasing trend in November and December as well as during spring freshet. Specific conductance also increased during the period from May 9 to June 3. The water discharge during that time decreased drastically and may in part explain the increase in conductivity at this station. Temperature Water temperature at the site increased gradually until it reached its maximum of 27.76°C on August 18th. Water temperatures above 20°C were recorded on 89 days between July 4 and September 24, which is an increase of two weeks compared to 2014. There were 157 days when water temperature was below 5°C and this is a decrease of 12 days compared to 2014 data.

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3.2.2 Interpretation of Grab Samples Results Six grab samples at the Milltown station and at the Forest City station were collected in 2015. Samples were analysed at Environment Canada’s Atlantic Laboratory for Environmental Testing located in Moncton, NB. That laboratory is accredited by the Canadian Association for Laboratory Accreditation (CALA) for all the parameters reported here. St. Croix River at Milltown, New Brunswick Results for each sample taken at Milltown are shown in Appendix 5, along with the applicable CCME guideline for the protection of aquatic life. Where no CCME guideline exists for a parameter, the most pertinent guidelines from another province were used as reference. A summary of the parameters analyzed is included below.

Total aluminum exceeded the CCME guideline of 100 micrograms per litre (µg/L) in four out of six samples in 2015. Elevated levels of aluminum are fairly common in Atlantic Canada although the aquatic life seems to be in good health. This is believed to be because most of the aluminum in Atlantic Canada rivers is bonded or complexed with organic compounds and therefore not bio-available to aquatic life. Dennis and Clair (2012) produced data which supported that theory and they developed an algorithm for calculating the amount of complexed aluminum based on measured TOC in Atlantic rivers. With TOC values ranging from 6.2 to 9.2 the calculated complexed aluminum concentrations made up a large proportion of the measured total aluminum (at least 75%).

One of the samples exceeded the calculated CCME guideline for cadmium, which ranged from undetectable to 0.029-0.031 ug/L based on the water hardness, while the other measured values were very near the guideline. Cadmium values at Forest City station were all below the detection limit of the laboratory, indicating that a natural or anthropogenic source of cadmium is likely located between the two water quality stations. Major pathways for cadmium to enter the aquatic environment are through atmospheric fallout (smelting and refining) and releases to water from the production of pulp and paper, processing of metals and municipal wastewater (ECCC2015).

On one occasion, iron was measured at the level of the CCME guideline of 0.3 mg/L. Iron is not considered to pose a risk to aquatic life as only a small proportion of it is likely available for uptake by aquatic life.

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The CCME guidelines for copper, nickel and lead are all based on a formula that uses water hardness to determine guideline concentration and also has a minimum regardless of water hardness. Based on the range of water hardness at the Milltown station, we used the minimum values stated in the CCME guidelines for these metals (Appendix 5). No values exceeded those guidelines.

Total phosphorus is 2 to 5 times higher at Milltown than at Forest City and one measurement exceeded the Ontario Ministry of the Environment (OMOE, 1994) phosphorus guideline of 0.03 mg/L. Similarly, nitrate is also higher at Milltown than Forest City. This indicates sources such as municipal and industrial wastewater are likely contributing nutrient loads that can increase algal production in the downstream reaches of the river.

pH values were not measured outside the 6.5 to 9 range recommended by the CCME.

St. Croix River at Forest City, Maine Results for the sample taken at Forest City are shown in Appendix 5, along with the applicable guideline for the protection of aquatic life. Where no CCME guideline exists for a parameter, the most pertinent guidelines from another province were used as reference. No parameters exceeded applicable guidelines in 2015.

Water Quality Index The CCME water quality index (WQI) is a useful tool to assess water quality at monitoring sites visited regularly. It measures the frequency and extent to which selected parameters exceed water quality guidelines and reports the results as a single score. This allows for a quick assessment of the status of the water body and can be used as an indicator of overall aquatic health. Further analysis should always be completed on individual parameters in addition to other assessments (e.g. biological) for a full evaluation of aquatic health. More information on the CCME WQI is available at: http://www.ccme.ca/ourwork/water.html?category_id=102. The WQI ratings were calculated each year using samples from the current year and

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those from the previous two years1. Using three-year rolling scores dampens strong fluctuations that may result from having small sample sizes and provides a more accurate representation of overall water quality. The parameters and guidelines used in the index are included in Table 2. These are consistent with parameters used by the New Brunswick Department of Environment in the Canadian Environmental Sustainability Indicators project with the exception of ammonia as this is not part of the laboratory analysis at these two sites. Guidelines used are for the protection of aquatic life and thus, the WQI scores will reflect this intended water use only.

TABLE 2 Parameters and Guidelines used in the WQI Calculations

Parameter Units Lower

Guideline Upper

Guideline Guideline

Source Arsenic µg/L 5 CCME, 1997

Chloride mg/L 120 CCME, 2011

Copper µg/L 2, for harness 0 to 82 mg/L

CCREM, 1987

Iron mg/L 0.3 CCREM, 1987

Nitrate mg/L as Nitrogen 3 CCME, 2012

Dissolved Oxygen mg/L 6.5 CCME, 1999a

Phosphorus mg/L 0.03 OMOE, 1994

pH pH units 6.5 9.0 CCREM, 1987

Turbidity NTU 10 CCME, 1999b

Zinc µg/L calculated BC MOE, 1999

Notes: µg/L – micrograms per Litre; mg/L – milligrams per Litre; NTU – nephelometric turbidity units

1 Forest City was only sampled once in 2011, rather than the typical 6 to 8 per year, as a result of flooding which caused a stoppage of the stream gage and water quality sonde for part of the year.

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WQI ratings rank from 0 to 100, with higher scores indicating better water quality. The WQI scores for both stations were very consistent over the 2007 to 2015 period. Scores varied between 82.5 and 82.9, or “good”, at Milltown and stayed at 100, or “excellent”, at Forest City. Over the eight-year period, exceedances of water quality guidelines at Milltown were observed for zinc for 13.4% of samples, 9% for total phosphorus, and 4.5% for iron. Increased levels of zinc, phosphorus and iron between the two stations are indicative of wastewater discharge from municipal and industrial sources.

FIGURE 3. Water Quality Scores

References [BC MOE] British Columbia Ministry of Environment. 1999. Ambient water quality guidelines for zinc: Overview report. [CCME] Canadian Council of Ministers of the Environment. 1997. Canadian Water Quality Guidelines for the Protection of aquatic life: Arsenic. In: Canadian Environmental Quality Guidelines, Canadian Council of Ministers of the Environment, Winnipeg, Manitoba (www.ccme.ca/publications/ceqg_rcqe.html). [CCME] Canadian Council of Ministers of the Environment. 1999a. Canadian Water Quality Guidelines for the Protection of aquatic life: Dissolved Oxygen (freshwater).

0

20

40

60

80

100

2007‐09 2008‐10 2009‐11 2010‐12 2011‐13 2012‐14 2013‐15

WQI score

Milltown

Forest City

Excellent

Good

Fair

Marginal

Poor

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In: Canadian Environmental Quality Guidelines, Canadian Council of Ministers of the Environment, Winnipeg, Manitoba (www.ccme.ca/publications/ceqg_rcqe.html). [CCME] Canadian Council of Ministers of the Environment. 1999b. Canadian Water Quality Guidelines for the Protection of aquatic life: Turbidity. In: Canadian Environmental Quality Guidelines, Canadian Council of Ministers of the Environment, Winnipeg, Manitoba (www.ccme.ca/publications/ceqg_rcqe.html). [CCME] Canadian Council of Ministers of the Environment. 2011. Canadian Water Quality Guidelines for the Protection of aquatic life: Chloride. In: Canadian Environmental Quality Guidelines, Canadian Council of Ministers of the Environment, Winnipeg, Manitoba (www.ccme.ca/publications/ceqg_rcqe.html). [CCME] Canadian Council of Ministers of the Environment. 2012. Canadian Water Quality Guidelines for the Protection of aquatic life: Nitrate. In: Canadian Environmental Quality Guidelines, Canadian Council of Ministers of the Environment, Winnipeg, Manitoba (www.ccme.ca/publications/ceqg_rcqe.html). [CCREM] Canadian Council of Resource and Environment Ministers. 1987. Canadian water quality guidelines. Task Force on Water Quality Guidelines. Ottawa, Canada. Dennis IF and Clair TA. 2011. The distribution of dissolved aluminum in Atlantic salmon (Salmo salar) rivers of Atlantic Canada and its potential effect on aquatic populations. Can J Aquat Sci 69:1174-1183. [ECCC] Environment and Climate Change Canada. 2015. Releases of Cadmium to the Environment. Ottawa, Ontario. https://www.ec.gc.ca/indicateurs-indicators/default.asp?lang=en&n=7F04A6AB-1. Accessed February 29, 2016. [OMOE] Ontario Ministry of the Environment. 1994. Water Management Policies, Guidelines, Provincial Water Quality Objectives of the Ministry of Environment [reprinted February 1999]. Ontario Ministry of the Environment. 67 pp.

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4.0 STATUS OF POLLUTION ABATEMENT

4.1 Maine Baileyville: The Baileyville Wastewater Treatment Facility had three wastewater discharge permit violations during 2015: two settleable solids violations (one in April and one in September), and a monthly average flow violation in April. These violations were attributable to high water flows in April and a rain event in September. The facility also had two sanitary sewer overflows during the year. One was due to a structural flaw at a pump station that took place in June, where the discharge did not lead directly to the river. The other was due to the September rain event and did reach the St. Croix River. Calais: The Calais Wastewater Treatment Facility continues to be in compliance with their wastewater discharge permit. The facility is part of the Maine Department of Environmental Protection's Combined Sewer Overflow (CSO) program and has a Department approved CSO Master Plan which was updated in December 2014. The updated CSO Master Plan lists the many projects that have been completed as well as a tentative schedule for completing the projects that remain. The tentative schedule lists projects out to the year 2019. Woodland Pulp LLC: During 2015 the Woodland Pulp Mill (Mill) in Baileyville was in compliance with its Maine wastewater discharge permit (Permit) except for one minor pH excursion (4.9/5.0 SU) in March. Six discharge events were reported in 2015, with the most significant event occurring on March 14. This involved a break in the force main that conveys primary treated process wastewater to the secondary aeration system. The break occurred in the line in an area adjacent to Wapsaconhagan Stream (a tributary of the St. Croix River) and resulted in a discharge of ~128,000 gallons to that surface waterbody. A temporary fix was installed on March 15th. The Department of Environmental Protection (DEP) issued a Letter of Warning to the Mill in response to this incident. The Mill has been assessing alternatives for a permanent fix to the line and routinely updating the Department on progress. All other spills were much smaller and were contained on the Mill property. The Mill is working with a consultant and the DEP on efforts to pursue site specific water quality criteria for cadmium. The permit contains a 2018 deadline for complying with cadmium limits already in the permit or establishing new limitations based on the site specific criteria study.

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Construction of two new tissue machines began at the end of the year with start-up planned for February and May of 2016. This upgrade did not require a modification to the Mill’s current permit. 4.2 New Brunswick

McAdam: The McAdam wastewater treatment facility continues to meet the effluent requirements of the Province of New Brunswick. The McAdam wastewater treatment facility is an oxidation type system that uses an activated sludge process.  

St. Stephen: The wastewater lagoon system along Dennis Stream continues to meet the effluent requirements of the Province of New Brunswick. In 2016 the Town of St. Stephen will have to identify all CSO points and adhere to their developed CSO plan.  

The St. Croix Estuary Project (SCEP) received funds from Environment Canada to conduct outfall sampling in 2012 and 2014. Results were utilized by the Town and SCEP to verify the effectiveness of upgrades undertaken to the collection system. In 2015, SCEP began to shift their focus to pathogenic issues in the St. Croix River system as well as the outfall sampling project. Results are pending. Champlain Industrial Park: The extended aeration facility treats the domestic wastewater of its employees as well as the industrial inputs from the industrial park. Current loadings on this facility suggest that there is a reduction of activity within the Industrial Park which will lead to improved effluent standards though the effluent currently meets the limits set in the Certificate of Approval to Operate.  

Evergreen Acres: The facultative lagoon treats the domestic wastewater of the 58 mobile homes in the park. The facility discharges treated effluent to the marshy headwaters of Meadow Brook. In 2014 a new owner purchased this property and made upgrades to both the potable and domestic systems.  

Oak Bay Park: The Oak Bay Campground uses a trickling filter system to treat the domestic wastewater from 110 campsites prior to discharging the treated, disinfected effluent to Oak Bay. The Department of Environment and Local Government, Regional Office in Saint John is responsible for this file and maintains regular contact with the system proprietor to ensure the proprietor is aware that prior to an expansion of sites, a wastewater upgrade would be required.

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5.0 FISHERIES

5.1 Anadromous Fisheries Summary: Anadromous fish species – including alewives (Alosa pseudoharengus), also known as gaspereau and Atlantic salmon (Salmo salar) – have been counted annually at the research trap at the Milltown dam fishway since 1981. The dam is at the head-of-tide on the St. Croix River and is owned by the New Brunswick (NB) Power Corporation. The fishway and research trap are located on the Canadian side of the river and are under the jurisdiction of Canada's Department of Fisheries and Oceans (DFO).

Since 2007, the Milltown research trap has been operated for only a limited number of weeks in May-July to record the alewife spawning run. From 2012-2014, the Atlantic Salmon Federation (ASF) operated the trap and collected data under agreements and/or partnerships with the St. Croix International Waterway Commission (SCIWC), the International Joint Commission (IJC), DFO, New Brunswick Power and the Maine Department of Marine Resources (DMR). In 2015 the SCIWC resumed management of trap operations and data collection under agreements and/or partnerships with the IJC, DFO, NB Power, DMR, ASF, U.S. Fish and Wildlife Service (USFWS) and NOAA/Atlantic States Marine Fisheries Commission.

The Milltown fishway was activated on April 15 and the research trap was activated on April 30 when spring water flows had fallen to levels that allowed for effective fishway operation. The first fish was recorded on May 7. The trap was then operated continuously, with all fish counted individually until July 18, the presumed end of the River Herring run. After July 18, NB Power continued to operate the fishway until mid-November, as required by federal agreement, but with no fish count.

River Herring: (River herring is the general name for two species, the alewife and the blueback herring.) There has been a general trend toward improving returns in recent years, presumably due to DFO trap-and-truck operations (2001-2008) and the State of Maine’s re-opening of the Woodland fishway (2008-present) that together restored access to 475 hectares (1,174 acres) of river herring spawning habitat, and Maine’s re- opening of the Grand Falls fishway in 2013 to restore access to another 16,724 hectares (41,325 acres) of spawning habitat in the upper watershed. Prior to spawning barriers first being initiated in 1987, these St. Croix waters supported a run of up to 2.6 million alewives in the mid-1980s.

The 2015 run of 93,501 river herring was the highest since 1998 and six-fold the average run of the last 15 years. Technical issues with the fishway attraction flow were noted in 2014, with a preliminary investigation conducted by DFO. Specific to 2015, the

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three hydropower turbines adjacent to the fishway were off-line for refurbishment for the entire monitoring period. This created unique conditions below and above the fishway that have not occurred in the 32 year period of trap record.

With no inflow or outflow at three turbines the following conditions occurred:

Below the dam, there was an area of slack water immediately adjacent to the fishway that formed a holding pool where incoming fish were observed to actively school and stage prior to entering the fishway.

The sole discharge on this side of the river was now the fishway outfall. The fishway attraction flow relative to adjacent turbine outflows has been a concern and has been under study in recent years. These conflicting conditions were not present in 2015 and fish were observed to quickly locate and enter the fishway.

At the top of the fishway there was an observable delay in fish exiting the fishway channel. The lack of current to the turbines eliminated the sensory clues that fish usually rely on to recognize and follow their upstream migration path. This was noted but could not be mitigated due to turbines being off-line.

In 1995, the State of Maine blocked alewife passage at the next upstream dam, Woodland, which restricted the fish to less than 0.2% of its believed historic St. Croix spawning habitat. A trap-and-truck operation by DFO from 2001-2007 and the State's reopening of the Woodland fishway to alewives in 2008 has given the species access to an additional 475 hectares (1174 acres) of spawning habitat in Woodland Flowage for the last twelve years. In April 2013, the Maine Legislature and Senate overwhelmingly approved an emergency bill to reopen the remaining areas of the eastern branch of the St. Croix (above Grand Falls and Vanceboro) to alewife passage. The re-opening of this habitat, as well as the unique fishway conditions mentioned above, are expected to contribute to the increased return trend noted previously.

A total of 94 alewives were lethally sampled at Milltown for fork length, body weight, gonad weight, sexual maturity stage, scale age and previous spawning record. Scale identification determined of these, 87 were alewives and nine were blueback herring. Based solely on the small sample, it appears that the historic blueback herring component of the St. Croix river herring run may be recovering. This is the third consecutive year that blueback herring have been recorded in the Milltown sample, after more than a decade of absence, and now in larger numbers. This suggests that blueback herring have continued to comprise a portion of the St. Croix river herring run over the long term, generally undetected in the small Milltown sample size.

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Blueback herring were last documented in Milltown river herring samples in 1993 (18% of 413 fish) and 1990 (27% of 313 fish) while samples in 1992 (509 fish) and 1991 (111 fish) were exclusively alewife. Variable sampling protocols and limited sample size preclude any conclusions from these data but do offer some insight.

Other species: Other fish captured in the Milltown trap during the course of the monitoring period are counted and immediately released upstream, unharmed, unless specified by fisheries agencies for removal.

In 2015, four freshwater fish species were recorded in small numbers; these are all assumed to have passed over the dam spillway or through open gates and returned up the fish ladder after encountering brackish water.

Four diadromous fish species in addition to river herring have been recorded at the Milltown trap at various times since 1981. In 2015 three species were documented.

1. An individual sea lamprey (Petromyzon marinus) passed the trap on June 18, attached to a river herring.

2. Juvenile American eel (Anguilla rostrata) can pass through the trap’s 1-inch mesh unimpeded and therefore are rarely recorded. However, on June 16, the fishway was drained for four hours to allow for head pond maintenance and large numbers of juveniles were observed on the still-wetted floors of the fishway pools prior to the fishway being reflooded. Additionally, two adult eels were recorded in the trap in 2015.

3. American shad (Alosa sapidissima) were recorded at the Milltown research trap

for the first time since 1999. The first three shad entered the trap late on June 12, amid a strong run of river herring, and were counted and released. On scattered dates to June 27, nine additional shad entered the trap for a total of 11 fish. One of these died in the trap and was sampled for fork length, body weight, gonad weight, sexual maturity stage, scale age and previous spawning record. The remaining fish were live sampled for fork length and scales (to provide age and previous spawning record) and released.

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FIGURE 4. Fish Count at Milltown Dam

The following table summarizes the trap count in 2015 and details are provided in Appendix 6.

TABLE 3. 2015 Trap Count

Species Number

Alewife and Blueback Herring 93,501

American Shad 11

American Eel 2

Sea Lamprey 1

White Sucker 27

Smallmouth Bass 29

Brook Trout 9

Common Shiner 2

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5.2 Shellfish Harvesting  

New Brunswick: Shellfish harvesting occurs principally in Oak Bay, either for direct marketing within areas designated as conditionally approved, or for depuration in areas designated as restricted. Environment Canada sampled St. Croix River and Oak Bay marine water quality stations on five occasions from June 12 to October 9, 2015. Additional water quality sampling was performed as part of the bay’s Conditional Management Plan (CMP) which allows shellfish harvesting during dry / low rainfall conditions.

Overall, fecal coliform densities in 2015 were consistent with those observed in previous years (i.e., 2006-2009 & 2011-2014). A rise in bacterial levels was detected at several sampling stations in mid-September, three days following a significant rainfall event (42 mm). This confirms the continued need for a large portion of the bay waters to be managed conditionally based on rainfall. Maine: The shoreline along Calais and Robbinston, Maine has limited habitat for commercial shellfish. Most of area is classified as prohibited to shellfishing by the Maine Department of Marine Resources, Division of Shellfish Management to protect public health. However, there are two small coves opened on a seasonal conditional basis. For more information on these areas refer to notices for Area 62 from the Maine Department of Marine Resources at: http://www.maine.gov/dmr/rm/public_health/closures/closedarea.htm

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6.0 IJC INTERNATIONAL WATERSHED INITIATIVES

The following are projects in the St. Croix Watershed that are supported in part by the IJC’s International Watershed Initiative (IWI) program.

6.1 Ongoing Aquatic Food-Web Study Beginning in 2013, an ecological assessment of the St. Croix system was initiated by the IJC’s International Watershed Initiative (IWI) and led by the USGS Maine Cooperative Fish and Wildlife Research Unit at the University of Maine (Orono, Maine). The objective of this study is to explore the effects of marine-derived nutrients on freshwater food webs as alewives return to the St. Croix watershed. To characterize the presence of marine-derived nutrients, fish, aquatic insect and zooplankton samples were collected from 2013-2015 from seven sites in the St. Croix watershed and from 2014-2015 at two sites in the East Machias watershed. These samples were processed for stable isotope analysis and will be used to infer differences between communities with and without direct marine input. Such information will provide a baseline description of the freshwater food web in the St. Croix prior to the anticipated recovery of the alewife run after fish passage improvements. The East Machias watershed was included as a reference site and was chosen based on its large established alewife run. While analysis is still being completed, samples processed to date indicate no detectable influence of alewives as a source of marine-derived nutrients in the St. Croix River. This was expected as the alewife run is still recovering in this watershed. Stable isotope analyses do indicate a clear separation between trophic levels at each site. Water quality analyses indicated that all seven sites on the St. Croix are oligotrophic and have low levels of phosphorus and nitrogen available for algal growth. Sites on the main stem had the lowest levels of both nutrients, while Grand Falls Flowage had the highest. Analysis is ongoing and will culminate in results reported as manuscripts to be published in a scientific journal, as well as a thesis dissertation. This dissertation will include three main chapters, each publishable as a separate manuscript. The first chapter will characterize the food web in the St. Croix prior to the return of a large alewife run. The second will explore the potential influence of marine-derived nutrient input in both the St. Croix and East Machias Rivers. The last chapter will focus on developing a nutrient model to trace the net flow of nutrients into and out of the St. Croix

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watershed, based on the information collected and that found in the primary literature. This model will explore how changes in passage efficiency at three of the main stem dams (Mill Dam, Woodland Dam and Grand Fall Dams) might influence the population dynamics of the alewife run. The potential for this model includes addressing questions of improved passage. For example, if the fishway at one or more dams is redesigned, adults could have increased access to lake areas for spawning. The nutrient model could be used to determine how an increase in adult presence could influence the net flow of nutrients in the St. Croix River. The dissertation is expected to be finished by spring of 2017. 6.2 Alewife Count at Milltown In 2015, the IJC’s IWI program continued to provide support for the alewife count at Milltown Dam in partnership with the efforts of government and non-governmental organizations. The collected data is discussed in Section 5.0 of this report and detailed counts over time are presented in Appendix 6. 7.0 ADDITIONAL ITEMS TO REPORT

7.1 FERC Dam Relicensing Vanceboro Dam/Spednic Lake: Vanceboro Dam/Spednic Lake: On March 1, 2011, Woodland Pulp LLC filed a notice of intent to start the re-licensing process for Vanceboro Dam which is located along the International Boundary. The current license expires in March 2016. The process is following the U.S. Federal Energy Regulatory Commission (FERC) integrated Licensing Process requirements and is ongoing. The docket number is P-2492-000. In 2011, focus was on preparing, filing and distributing for comment the requisite documents including background information and proposed study plans. In 2012, focus moved to identification, comment approval and implementation of studies and study plans. Corresponding field work was conducted in the areas of archaeology, fisheries, water quality, flora and fauna (including aquatic invertebrates and invasive species), wetlands, recreation, bathymetry and habitat, among other attributes. In 2013, study results were circulated for review and comment individually and in the Form of a Preliminary License Application (PLA). Additional information was provided and supplemental field work associated with fisheries and water quality was conducted. A Final License Application (FLA) was filed in February 2014. The FLA included study information, project specifications, answers to comments and requests and the required and/or relevant information. FERC deemed the

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application complete and solicited comments. An Environmental Assessment was subsequently prepared and comments solicited. Federal Fisheries agencies filed fisheries prescription documents. Issuance of a license is the next step. Woodland Pulp will review license terms and conditions and decide whether to accept or reject the license. As part of the FERC licensing process, Woodland Pulp also filed applications for State 401 Water Quality Certificates with Maine Department of Environmental Protection. The State waived its authority for the St. Croix Projects. Forest City Dam/East Grand Lake: The Forest City Dam (Forest City Project) and the West Grand Lake and Sysladobsis and Farm Cove Dams (West Branch Project) on the St. Croix River system owned by Woodland Pulp LLC are also in the FERC re-licensing process. The Forest City Dam is located on the International Boundary. The licenses expired in 2000. Since 2000 these projects have been operating on annual licenses. Docket numbers are P-2660-024 and P-2618-024. Woodland Pulp and its predecessors as licensee of these projects in pasts sought to have FERC determine that the projects were not required to be licensed. However, in 2011 FERC ruled that licensing was required. A draft Environmental Assessment was issued by the FERC in October 2014 and comments were solicited. A final Environmental Assessment was issued in January 2015 for projects. New 30 year term licenses were issued in November 2015 to Woodland Pulp for continued operation and maintenance of the projects. In December 2015, Woodland Pulp filed a request for rehearing of license conditions for both Forest City and West Branch Projects. Federal and State Fisheries Agencies, the Passamaquoddy Tribe, The Bureau of Indian Affairs, Politicians, Citizens and other Non-Governmental Agencies have had discussions and/or submitted comments regarding whether or not the West Branch Project should be open to alewife's immediately or after some period of years. Note: The above FERC licensing information is provided in the Board’s Annual Report for general information purposes only.

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7.2 USGS Tide Gage Station In October 2015 USGS established a tide gage station at the international bridge in Calais, Maine. The average daily tide range at the site is about 24 feet. Water level data collected at the tide gage will be extremely useful to document trends over time and capture real time storm surges at the mouth of the river. The link to the real time data site is: http://waterdata.usgs.gov/me/nwis/uv/?site_no=01021060&PARAmeter_cd=00065,00060

FIGURE 5. USGS gaging station 01021060 St. Croix River at Calais, Maine

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ACKNOWLEDGEMENTS

The International St. Croix River Watershed Board gratefully acknowledges the valuable input and efforts in support of this report provided by the following groups/individuals and without whom the preparation of this report would not be possible.

Lee Sochasky Atlantic Salmon Federation

Tim Andrews Environment Canada Dave Benoit Environment Canada Luc Bernard Environment Canada

Derek Elliott Environment Canada

Benoit Lalonde Environment Canada

Vincent Mercier Environment Canada Paul Noseworthy Environment Canada

Bernard Richard Environment Canada

Kathryn Parlee Environment Canada

Susanne Miller Maine Department of Environmental Protection

Brad McPhereson New Brunswick Department of Environment and Local Government

Don Fox New Brunswick Department of Environment and Local Government

Heather Almeda St. Croix International Waterway Commission Abby Pond St. Croix International Waterway Commission

Barbara Blumeris U.S. Army Corps of Engineers

Laura Flight U.S. Geological Survey

Bob Lent U.S. Geological Survey Nick Stasulius U.S. Geological Survey

Gregory Stewart U.S. Geological Survey Anthony Underwood U.S. Geological Survey

Joseph Zydlewski U.S. Geological Survey Betsy Barber University of Maine, Orono

Jay Beaudoin Woodland Pulp LLC.

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APPENDIX 1

SUMMARY - ORDERS OF APPROVAL & BASIN MAP

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SUMMARY ST. CROIX RIVER ORDERS OF APPROVAL

INTERNATIONAL JOINT COMMISSION

9 November 1915

For approval of a dam and power canal and the obstruction, diversion and use of the waters of the St. Croix River at Grand Falls in the State of Maine and the Province of New Brunswick: Maximum elevation 202.0 feet m.s.l.

3 October 1923

Erection and repairs of fishways in the St. Croix River at St. Croix Gas and Light and Canadian Cottons Mill Dam. (St. Croix Gas and Light Dam was destroyed by fire in 1924. The Canadian Cotton Mills Dam was reconstructed in 1934 and is known as Milltown Dam.)

6 October 1931

For the obstructions of the waters of the St. Croix River at Grand Falls in the State of Maine and the Province of New Brunswick: Increase in elevation to 203.5 feet m.s.l.

2 October 1934

For the reconstruction of a dam across the St. Croix River from Milltown in the Province of New Brunswick to Milltown in the State of Maine.

15 October 1965

For the construction of a storage dam in the St. Croix River at Vanceboro, Maine and St. Croix, New Brunswick:

Discharge from Spednic Lake: 200 cfs (5.66 m3\s ) minimum

Elevation of Spednic Lake: 385.86 feet (117.611 metres ) maximum

Between 1 October and 30 April: 371.50 feet (113.233 metres) minimum

Between 1 May and 30 September: 376.50 feet (114.759 metres ) minimum

Discharge from East Grand Lake: 75 cfs (2.12 m3\s) minimum

Elevation of East Grand Lake: 434.94 feet (132.571 metres) maximum

427.94 feet (130.438 metres) minimum

16 November 1982

For the reconstruction of the diversion dike in the St. Croix River near Baileyville, Maine.

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Appendix 1 - page 2

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APPENDIX 2

MILLTOWN, GRAND FALLS, VANCEBORO AND FOREST CITY DAMS

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Appendix 2 - Page 1

GENERAL DESCRIPTION OF MILLTOWN, GRAND FALLS, VANCEBORO & FOREST CITY DAMS

Milltown Dam & Fish Passage Facilities

The Milltown facility is located in Milltown, New Brunswick across the river from Calais, Maine and approximately one mile upstream from the international bridge between Calais and St. Stephen, New Brunswick. It consists of a powerhouse with 6 hydroelectric generating units (installed capacity is 3.6 MW), an upstream fish passage facility that goes from the lower pool around the side of the powerhouse to the upper pool. The spillway is located adjacent to the powerhouse and has 6 openings with large wooden stop logs that can be removed or installed via a railed vertical lifting mechanism. Other sections of the spillway have been equipped with wooden flashboards that are meant to fail and increase the spillway’s capacity during high flows. At the far end of the spillway, running perpendicular from the spillway to the river bank, is a gatehouse with 5 vertical lift gates used to control the forebay elevation. A wooden-chute downstream fish passage facility is located in the area between the spillway and the gatehouse.

Grand Falls Dam & Fish Passage Facilities

Grand Falls Flowage Dam is approximately 8 miles upstream of the town of Baileyville, Maine and can store approximately 88,000 acre-feet of water. This dam has 9 steel tainter gates on the right (facing downstream) of the spillway, and a concrete emergency spillway approximately 800 to 850 feet in length running from the concrete gatehouse and ending at the left shoreline. The gatehouse is located between the gates and the emergency spillway. A floating walkway allows access to the entire upstream length of the spillway. Lake levels are recorded by a gauging station on the right bank of the dam.

The downstream side of the emergency spillway/dam has a concrete face sloping at an angle of approximately 45 degrees, and supported by concrete buttresses along its length. The space between these buttresses has been enclosed with a pressure-treated timber log system. This log system was installed to minimize the temperature differential in the downstream face area during freezing conditions to reduce possible degradation of the concrete face.

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Appendix 2 - Page 2

Water is impounded behind Grand Falls Dam and delivered to the hydroelectric plant and fish passage facilities via a channel on the right side of the impoundment, approximately 1000 feet upstream of the dam. Water flows to the turbines via three steel penstocks. A Denil fishway is located on the side of the hydroelectric plant. It is a concrete structure with a series of bays equipped with guide slots that allow for the installation of wooden V notched weirs to modify flows to levels acceptable for fish migration. Vanceboro Dam & Fish Passage Facilities Vanceboro Dam consists of an earth embankment with a concrete gate structure and with rock filled gabions on the upstream face. The concrete structure is 69 feet (21 m) long, and contains a fishway and two tainter gates, each 22’-6” (6.9 m) wide by 14’-6” (4.4 m) high. These gates are operated by electrical cable lifts. The gate structure is located on the International Boundary line between the United States and Canada. Gate sill elevation is at 371.5 feet (113.23 m) NGVD. Normal full pond elevation is at 385.86 feet (117.61 m), with an impounded surface of 20,870 acres (84.5 km2). There are approximately 221,200 acre-feet (0.27 km3) of useable storage at normal full pond. The fishway is a vertical slot fish ladder and is to the left of the tainter gates and consists of 10 bays or pools. There are 5 vertical lift wooden gates to regulate flow through the ladder. There is a steel trash rack on the upstream face of the fish passage. Forest City Dam & Fish Passage Facilities Forest City Dam is a small timber crib rock filled structure with three wooden sluice gates operated with a wooden ratchet lever system that lifts the gates using a steel cable or steel chain. These gates have openings of 8'-4" (2.54 m) and a sill elevation of 427.94 feet (130.44 m) NGVD. Full pond elevation is at elevation 434.94 feet (132.57 m) NGVD, and impounds 105,300 acre-feet (0.130 km3) of water. The fishway is located on the left side (facing downstream) of the dam and consists of timber baffle system with an upstream timber trash rack.

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Appendix 2 - Page 3

FACITILY SITE VISITS IN 2015

Board members met with New Brunswick Power Corporation officials (NB Power) on June 11, 2015 at the Milltown Dam in New Brunswick and participated in a site visit of the facility.

Board members met with Woodland Pulp LLC officials on June 11, 2015 at the Woodland Mill at Baileyville, Maine and then Board members participated in site visits at Grand Falls, Forest City, and Vanceboro Dams.

IJC and Board Participants included in the NB Power and Woodland Pulp LLC meetings and site visits are shown below:

IJC and Board Representatives:

Name Affiliation

Gordon Walker IJC Commissioner, Canadian Section

Benoit Bouchard IJC Commissioner, Canadian Section

Richard Morgan IJC Commissioner, Canadian Section

Glenn Benoy IJC staff, Canadian Section

Joe Babb IJC staff, U.S. Section

Bill Appleby St. Croix Board, Chair, Canadian Section

Geoff Mercer St. Croix Board, Canadian Section

Robert Stephenson St. Croix Board, Canadian Section

Jessie Davies St. Croix Board, Canadian Section

Colonel Barron St. Croix Board, Chair, U.S. Section

Ralph Abele St. Croix Board, U.S. Section

Bob Lent St. Croix Board, U.S. Section

Susanne Miller St. Croix Board, U.S. Section

Kathryn Parlee Secretary, St. Croix Board, Canadian Section

Barbara Blumeris Secretary, St. Croix Board, U.S. Section

Facility Representatives:

Jeff Babcock Hydro Manager, NB Power

Ian Campbell NB Power

Jay Beaudoin Environmental Manager, Woodland Pulp LLC

Kevin Dean Hydro Superintendent, Woodland Pulp LLC

Scott Beal Environmental Manager, Woodland Pulp LLC

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Appendix 2 - Page 4

Forest City Dam. No changes reported in 2015. The U.S. Federal Energy Regulatory Commission (FERC) conducts periodic dam safety inspections at the site.

Forest City Dam (6-11-2015) View of Dam from Downstream.

Forest City Dam (6-11-2015) View of Wooden Sluice Gate at Dam.

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Vanceboro Dam. No changes reported in 2015. FERC conducts periodic dam safety inspections at the site.

Vanceboro Dam (6-11-2015) View of Tainter Gates from Below Dam.

Vanceboro Dam (6-11-2015) View Looking Downstream from Dam.

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Appendix 2 - Page 6

Grand Falls Dam. No changes reported in 2015. Maine Emergency Management Agency, Dam Safety Program and the owner Woodland Pulp LLC conduct periodic dam safety inspections at the site.

Grand Falls Dam (6-11-2015) Upstream Side of Spillway from U.S. Side.

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Appendix 2 - Page 7

Grand Falls Dam (6-11-2015) View of Canadian Side Spillway.

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Appendix 2 - Page 8

Grand Falls Dam (6-11-2015) View of Denil Fishway Alongside Powerhouse.

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Appendix 2 - Page 9

Milltown Dam. During the Board's annual site visits, it has been observed that there is a crack in the floor of the powerhouse near units 5/6/7. This is not a new issue as the crack has been apparent since the 1980s. However, several years ago NB Power reported to the Board that there was increased movement in the crack. At that time (2003) NB Power took actions to assess the situation and established procedures to prevent further movement of the wall. NB Power set up heated hoarding on the outside face of the wall to prevent freezing and thawing action and has continued to use this method. NB Power continues to monitor the wall to make sure that additional actions are not required. Each year, NB Power technical staff conducts an annual inspection of the facility structures and prepares an annual report documenting the visual inspection. In addition, NB power engages an independent engineering consultant to provide periodic review of the facilities. Milltown conducted their 4 year inspection in summer 2012 and the report completed in April 2013 indicated satisfactory conditions. During the Board’s 2015 site visit three of the six turbines were under repair.

Milltown Dam (6-11-2015) View of Stoplog Spillway.

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Appendix 2 - Page 10

Milltown Dam (6-11-2015) Powerhouse with Enclosure Installed on Tailrace Wall.

Milltown Dam (6-11-2015) View of Fishway Below Dam.

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APPENDIX 3

WATER LEVELS AND FLOWS

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DAY JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC DAY1 132.137 132.007 131.860 131.637 132.387 132.421 132.268 132.060 131.965 131.822 131.641 131.710 12 132.129 132.004 131.854 131.627 132.388 132.424 132.259 132.062 131.953 131.845 131.652 131.720 23 132.120 132.007 131.846 131.626 132.388 132.425 132.244 132.049 131.947 131.858 131.656 131.749 34 132.127 132.000 131.843 131.629 132.384 132.413 132.227 132.050 131.934 131.860 131.662 131.767 45 132.121 132.001 131.835 131.629 132.383 132.400 132.214 132.057 131.919 131.857 131.661 131.774 5

6 132.114 131.997 131.825 131.625 132.376 132.399 132.204 132.053 131.907 131.849 131.664 131.779 67 132.106 131.991 131.815 131.624 132.373 132.384 132.185 132.046 131.895 131.832 131.669 131.787 78 132.097 131.985 131.805 131.623 132.366 132.367 132.179 132.042 131.886 131.811 131.668 131.792 89 132.090 131.981 131.794 131.621 132.362 132.362 132.169 132.035 131.872 131.789 131.659 131.793 9

10 132.082 131.973 131.784 131.627 132.370 132.360 132.157 132.027 131.872 131.779 131.656 131.792 10

11 132.072 131.967 131.774 131.637 132.377 132.354 132.148 132.013 131.883 131.749 131.656 131.800 1112 132.067 131.961 131.764 131.643 132.383 132.348 132.143 132.042 131.875 131.729 131.652 131.806 1213 132.062 131.954 131.753 131.655 132.391 132.355 132.133 132.048 131.860 131.710 131.665 131.810 1314 132.053 131.948 131.743 131.685 132.382 132.349 132.115 132.048 131.865 131.698 131.678 131.813 1415 132.043 131.950 131.755 131.727 132.377 132.331 132.118 132.047 131.852 131.679 131.675 131.846 15

16 132.035 131.943 131.759 131.767 132.371 132.322 132.115 132.047 131.828 131.663 131.673 131.865 1617 132.025 131.936 131.751 131.807 132.377 132.324 132.102 132.043 131.804 131.653 131.669 131.864 1718 132.014 131.930 131.752 131.852 132.378 132.307 132.094 132.039 131.781 131.643 131.663 131.890 1819 132.021 131.925 131.742 131.897 132.383 132.306 132.103 132.031 131.752 131.622 131.656 131.914 1920 132.019 131.921 131.730 131.941 132.394 132.298 132.102 132.021 131.735 131.611 131.660 131.928 20

21 132.012 131.913 131.721 131.998 132.387 132.313 132.099 132.016 131.709 131.606 131.676 131.930 2122 132.005 131.913 131.713 132.055 132.383 132.341 132.100 132.022 131.685 131.598 131.679 131.943 2223 131.997 131.906 131.702 132.113 132.389 132.338 132.092 132.018 131.670 131.603 131.709 131.959 2324 131.994 131.896 131.693 132.183 132.381 132.345 132.085 132.014 131.658 131.591 131.709 131.986 2425 131.998 131.892 131.683 132.238 132.376 132.335 132.078 132.011 131.638 131.588 131.704 132.012 25

26 131.992 131.885 131.675 132.282 132.387 132.320 132.069 132.002 131.623 131.593 131.698 132.033 2627 132.005 131.877 131.672 132.323 132.388 132.306 132.065 132.006 131.606 131.585 131.705 132.056 2728 132.013 131.868 131.667 132.357 132.398 132.295 132.069 131.999 131.594 131.580 131.716 132.081 2829 132.007 131.663 132.374 132.412 132.295 132.066 131.990 131.586 131.608 131.718 132.086 2930 132.003 131.649 132.383 132.411 132.284 132.057 131.983 131.705 131.639 131.714 132.099 3031 132.011 131.644 132.422 132.061 131.977 131.638 132.107 31

TOTAL 4094 3695 4084 3956 4104 3970 4096 4093 3954 4083 3950 4088 TOTALMEAN 132.051 131.948 131.751 131.873 132.385 132.347 132.133 132.029 131.795 131.700 131.675 131.887 MEANMAX 132.137 132.007 131.860 132.383 132.422 132.425 132.268 132.062 131.965 131.860 131.718 132.107 MAXMIN 131.992 131.868 131.644 131.621 132.362 132.284 132.057 131.977 131.586 131.580 131.641 131.710 MIN

SUMMARY FOR THE YEAR 2015 NOTE:Mean water level, 131.964mMaximum daily water level, 132.425 m On 2015-06-03Minimum daily water level, 131.58 m On 2015-10-28

GRAND LAKE AT FOREST CITYDAILY MEAN WATER LEVEL IN METERS FOR 2015

WATER LEVELS ARE PROVISIONAL AND ARE SUPPLIED BY ENVIRONMENT CANADA IN COOPERATION WITH WOODLAND PULP LLC

TABLE I

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DAY JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC DAY1 11.6 6.33 7.40 7.77 10.6 7.63 12.2 3.22 5.23 8.04 2.87 3.33 12 10.8 6.36 7.35 7.73 10.7 8.87 12.1 3.21 5.46 9.80 2.89 2.94 23 9.57 6.36 7.32 7.72 10.6 9.79 12.0 3.17 5.44 13.2 2.91 2.65 34 9.62 6.38 7.33 7.71 10.6 10.3 11.9 3.16 6.34 16.4 2.92 2.68 45 9.58 6.35 7.27 7.73 10.5 10.3 11.8 3.17 6.93 18.8 2.93 2.7 5

6 9.56 6.35 8.13 6.85 9.23 10.2 11.7 3.17 6.89 19.4 2.94 2.71 67 9.53 6.34 8.82 5.94 6.44 10.2 11.1 3.15 6.85 20.0 2.96 2.72 78 9.48 6.33 8.76 5.22 4.79 10.1 9.41 3.15 6.81 20.1 2.95 2.73 89 9.47 6.33 8.70 4.71 4.24 10.1 8.57 3.14 6.79 19.6 2.94 2.74 9

10 9.44 6.30 8.64 4.73 4.24 10.1 7.32 3.13 6.77 19.4 2.95 2.75 10

11 9.41 6.29 8.58 4.74 4.25 10.0 6.12 3.14 7.91 18.7 2.94 2.76 1112 9.38 6.27 8.52 4.76 4.28 9.42 6.14 3.19 8.48 18.3 2.95 2.75 1213 9.34 6.23 8.47 3.89 5.39 9.02 6.12 3.20 8.43 17.9 2.98 2.76 1314 9.32 6.24 8.45 3.02 6.16 9.00 6.10 3.20 10.7 17.6 2.99 2.79 1415 9.28 6.22 8.50 3.08 6.16 8.96 5.09 3.23 14.8 14.9 2.97 2.84 15

16 9.24 6.18 8.50 3.16 6.17 7.71 4.50 3.22 17.7 11.9 2.97 2.85 1617 9.19 6.19 8.47 3.23 6.18 6.86 4.52 3.20 18.4 10.4 2.97 2.87 1718 9.19 6.95 8.46 3.3 6.18 6.86 4.52 3.19 17.9 10.2 2.97 2.89 1819 9.19 7.66 8.41 3.37 6.19 6.84 4.54 3.19 17.3 8.25 2.96 2.91 1920 9.15 7.62 8.36 3.47 6.22 6.84 4.55 3.18 17.0 5.03 2.98 2.86 20

21 9.14 7.60 8.32 3.59 6.19 6.91 4.24 3.18 16.5 3.45 3.15 2.95 2122 9.12 7.59 8.27 3.67 6.19 6.94 3.86 3.18 11.9 3.09 3.24 2.98 2223 7.65 7.55 8.21 3.77 6.19 8.57 3.83 3.18 9.43 3.00 3.28 3.00 2324 6.32 7.54 8.15 3.87 6.16 11.4 3.84 3.16 9.29 2.95 3.29 3.06 2425 6.31 7.52 8.09 3.97 6.14 12.3 3.84 3.17 7.42 2.90 3.30 3.09 25

26 6.30 7.49 8.04 4.04 6.17 12.2 3.82 3.16 6.39 2.85 3.3 3.12 2627 6.35 7.46 8.02 4.09 6.18 12.2 3.82 3.15 6.33 2.82 3.31 3.17 2728 6.36 7.43 7.96 7.18 6.21 12.1 3.83 3.14 5.52 2.81 3.31 3.18 2829 6.37 7.90 10.5 6.25 12.2 3.82 3.14 5.10 2.89 3.32 3.23 2930 6.37 7.89 10.6 6.25 12.2 3.45 3.13 6.71 2.86 3.33 3.25 3031 6.35 7.83 6.29 3.21 4.18 2.84 3.26 31

TOTAL 268 189 253 157 207 286 202 99.4 287 331 91.8 90.5 TOTALMEAN 8.64 6.77 8.16 5.25 6.69 9.53 6.51 3.20 9.56 10.7 3.06 2.92 MEANMAX 11.6 7.66 8.82 10.6 10.7 12.3 12.2 4.18 18.4 20.1 3.33 3.33 MAXMIN 6.30 6.18 7.27 3.02 4.24 6.84 3.21 3.13 5.10 2.81 2.87 2.65 MINDAM3 23100 16400 21900 13600 17900 24700 17400 8600 24800 28600 7900 7800 DAM3

SUMMARY FOR THE YEAR 2015 NOTE:Total discharge 212700 DAMMean discharge, 6.75 m³/sMaximum daily discharge, 20.1 m³/s On 2015-10-08Minimum daily discharge, 2.65 m³/s On 2015-12-03

FOREST CITY STREAM BELOW FOREST CITY DAMDAILY MEAN DISCHARGE IN CUBIC METERS PER SECOND FOR 2015

DISCHARGE DATA ARE PROVISIONAL AND ARE SUPPLIED BY ENVIRONMENT CANADA IN COOPERATION WITH WOODLAND PULP LLC

TABLE II

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DAY JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC DAY1 117.009 116.825 116.429 116.925 117.139 117.178 117.177 116.821 116.308 116.285 116.493 116.412 12 116.995 116.814 116.411 116.922 117.165 117.174 117.184 116.812 116.283 116.346 116.503 116.422 23 116.973 116.812 116.385 116.919 117.190 117.176 117.179 116.784 116.270 116.385 116.499 116.453 34 116.959 116.797 116.366 116.915 117.204 117.165 117.165 116.774 116.247 116.417 116.501 116.481 45 116.940 116.794 116.342 116.912 117.233 117.149 117.160 116.765 116.229 116.448 116.492 116.490 5

6 116.925 116.784 116.312 116.906 117.238 117.150 117.152 116.755 116.212 116.479 116.488 116.496 67 116.922 116.768 116.285 116.903 117.244 117.128 117.137 116.737 116.199 116.499 116.497 116.505 78 116.919 116.755 116.261 116.904 117.235 117.104 117.142 116.715 116.180 116.516 116.492 116.509 89 116.915 116.744 116.235 116.893 117.236 117.094 117.128 116.698 116.159 116.521 116.460 116.510 910 116.912 116.729 116.209 116.887 117.246 117.088 117.117 116.681 116.157 116.564 116.447 116.507 10

11 116.906 116.716 116.184 116.880 117.256 117.078 117.105 116.649 116.166 116.557 116.430 116.511 1112 116.903 116.701 116.164 116.873 117.261 117.073 117.097 116.662 116.170 116.567 116.417 116.517 1213 116.904 116.687 116.130 116.86 117.279 117.078 117.082 116.654 116.150 116.576 116.420 116.522 1314 116.893 116.669 116.102 116.869 117.262 117.068 117.056 116.635 116.165 116.594 116.438 116.512 1415 116.887 116.668 116.104 116.875 117.250 117.049 117.061 116.613 116.176 116.594 116.424 116.536 15

16 116.880 116.652 116.084 116.874 117.233 117.042 117.053 116.596 116.164 116.593 116.408 116.563 1617 116.873 116.636 116.053 116.872 117.232 117.049 117.028 116.578 116.162 116.589 116.390 116.556 1718 116.860 116.619 116.042 116.865 117.234 117.027 117.006 116.557 116.162 116.591 116.370 116.586 1819 116.869 116.606 116.013 116.859 117.232 117.034 117.012 116.531 116.153 116.573 116.349 116.630 1920 116.875 116.592 115.979 116.862 117.252 117.032 117.001 116.510 116.166 116.556 116.335 116.658 20

21 116.874 116.575 115.949 116.851 117.236 117.049 116.992 116.491 116.158 116.542 116.358 116.647 2122 116.872 116.569 115.928 116.863 117.219 117.109 116.990 116.479 116.149 116.516 116.352 116.662 2223 116.865 116.556 115.897 116.857 117.231 117.116 116.972 116.457 116.138 116.519 116.401 116.690 2324 116.859 116.538 115.871 116.844 117.213 117.163 116.947 116.434 116.130 116.483 116.402 116.721 2425 116.862 116.524 115.842 116.831 117.196 117.172 116.928 116.418 116.112 116.467 116.387 116.769 25

26 116.851 116.503 115.814 116.836 117.196 117.167 116.909 116.396 116.091 116.458 116.379 116.805 2627 116.863 116.480 115.799 116.825 117.191 117.168 116.892 116.414 116.067 116.429 116.384 116.835 2728 116.857 116.455 115.778 116.814 117.195 117.166 116.879 116.392 116.046 116.404 116.408 116.872 2829 116.844 115.752 116.812 117.199 117.186 116.869 116.368 116.028 116.433 116.416 116.883 2930 116.831 115.723 116.797 117.189 117.185 116.841 116.347 116.107 116.502 116.414 116.904 3031 116.836 115.705 117.194 116.836 116.332 116.495 116.918 31

TOTAL 3624 3267 3598 3482 3634 3513 3628 3614 3485 3611 3493 3615 TOTALMEAN 116.895 116.663 116.069 116.077 117.222 117.114 117.035 116.582 116.163 116.500 116.425 116.616 MEANMAX 117.009 116.825 116.429 117.106 117.279 117.186 117.184 116.821 116.308 116.594 116.503 116.918 MAXMIN 116.831 116.455 115.705 115.585 117.139 117.027 116.836 116.332 116.028 116.285 116.335 116.412 MIN

SUMMARY FOR THE YEAR 2015 NOTE:Mean water level, 116.613mMaximum daily water level, 117.279 m On 2015-05-13Minimum daily water level, 115.585 m On 2015-04-10

SPEDNIC LAKE AT ST. CROIXDAILY MEAN WATER LEVEL IN METERS FOR 2015

TABLE III

WATER LEVELS ARE IN METERS AND ARE REFERENCED TO GEODETIC SURVEY OF CANADA DATUM. WATER LEVELS ARE PROVISIONAL AND ARE SUPPLIED BY ENVIRONMENT CANADA IN COOPERATION WITH WOODLAND PULP LLC

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DAY JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC DAY1 51.0 25.1 32.3 32.6 28.6 30.6 26.1 18.8 20.2 21.8 25.0 19.2 12 50.7 25.1 32.0 32.3 28.6 32.3 26.1 18.7 20.1 20.7 25.1 19.3 23 50.7 25.1 31.7 32.3 28.9 32.3 26.1 18.6 20.0 19.9 25.1 19.4 34 50.4 25.0 32.6 32.3 28.9 32.3 26.0 18.6 20.0 20.0 25.1 19.5 45 44.5 24.9 34.8 32.0 28.9 32.3 26.0 18.6 19.9 20.2 25.1 19.6 5

6 34.8 24.9 34.5 27.7 27.6 32.3 24.0 18.5 19.8 21.8 25.1 19.67 25.6 24.8 34.3 23.8 24.6 32.0 22.4 18.5 19.8 22.9 25.1 19.7 68 25.6 24.8 34.3 23.2 21.4 32.0 22.5 18.4 19.8 23.0 25.1 19.7 79 25.5 24.7 34.0 22.5 20.0 32.0 22.4 18.3 19.7 23.0 24.9 19.7 8

10 25.5 24.7 33.7 20.9 20.0 32.0 21.4 19.6 19.7 23.2 24.8 19.7 9

11 25.5 24.6 33.7 19.7 20.1 32.0 20.4 20.4 19.8 23.2 24.8 19.7 1012 25.4 24.6 34.8 19.7 22.5 28.9 20.4 20.4 19.8 23.2 24.7 19.713 25.5 24.5 36.0 19.1 25.0 26.9 20.4 21.1 19.7 23.9 24.7 19.7 1114 25.5 24.4 35.7 18.2 28.6 26.9 20.3 21.6 19.7 24.5 24.8 19.7 1215 25.4 24.4 35.7 16.1 28.3 24.7 20.3 21.5 19.8 25.1 24.7 19.8 13

16 25.3 24.4 35.7 13.0 28.3 21.5 20.3 21.4 19.7 25.7 24.6 19.9 1417 25.4 24.3 35.4 10.4 28.3 20.1 20.2 21.4 19.7 25.7 24.6 16.9 1518 25.2 25.6 35.4 9.77 28.3 18.1 20.1 21.2 19.7 25.7 24.4 15.119 25.3 26.4 35.1 9.97 28.3 14.0 20.1 21.1 19.7 25.5 24.3 15.3 1620 25.5 27.5 34.8 10.2 28.6 12.1 20.1 21.0 19.8 25.4 24.3 15.4 17

21 25.4 28.1 34.5 10.4 28.3 12.2 20.1 21.0 21.0 25.3 24.4 15.3 1822 25.3 28.0 34.5 10.7 28.3 12.3 20.1 20.9 21.8 25.1 24.4 15.4 1923 25.3 28.0 34.3 11.1 28.3 15.9 21.1 20.8 21.8 25.2 24.6 15.5 2024 25.2 27.9 34.0 11.4 28.3 20.7 22.0 20.7 18.7 25.0 24.6 15.725 25.3 30.3 34.0 11.6 28.2 23.4 21.9 20.7 20.8 24.9 24.5 15.9 21

26 25.3 32.6 33.7 11.8 28.2 24.5 21.9 20.6 20.7 24.9 21.4 16.0 2227 25.2 32.6 33.4 12.0 28.2 24.5 21.8 20.6 20.6 24.7 19.1 16.1 2328 25.2 32.3 33.4 21.2 28.2 24.6 21.7 20.6 20.5 24.6 19.2 16.3 2429 25.2 33.1 28.3 28.2 25.4 21.7 20.5 20.4 24.8 19.3 16.3 2530 25.1 32.8 28.6 28.2 26.1 19.9 20.4 20.9 25.1 19.2 16.431 25.1 32.8 28.3 18.8 20.3 25.1 16.4 26

TOTAL 916 740 1057 583 834 755 676 625 604 739 717 552 TOTALMEAN 29.5 26.4 34.1 19.4 26.9 25.2 21.8 20.2 20.1 23.8 23.9 17.8 MEANMAX 51.0 32.6 36.0 32.6 28.9 32.3 26.1 21.6 21.8 25.7 25.1 19.9 MAXMIN 25.1 24.3 31.7 9.77 20.0 12.1 18.8 18.3 18.7 19.9 19.1 15.1 MINDAM3 79100 63900 91300 50300 72100 65200 58400 54000 52200 63900 62000 47700 DAM3

SUMMARY FOR THE YEAR 2015 NOTE:Total discharge 760100 DAMMean discharge, 24.1 m³/sMaximum daily discharge, 51.0 m³/s On 2015-01-01Minimum daily discharge, 9.77 m³/s On 2015-04-18

ST. CROIX RIVER AT VANCEBORODAILY MEAN DISCHARGE IN CUBIC METERS PER SECOND FOR 2015

DATA ARE SUPPLIED BY THE UNITED STATES GEOLOGICAL SURVEY AND ARE PROVISIONAL

TABLE IV

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DAY JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC DAY1 61.826 61.775 61.410 61.798 61.797 61.895 61.766 61.725 61.731 62.004 61.947 61.881 12 61.838 61.771 61.429 61.833 61.821 61.897 61.755 61.720 61.722 62.018 61.933 61.845 23 61.767 61.779 61.453 61.833 61.854 61.909 61.729 61.712 61.709 61.908 61.911 61.867 34 61.700 61.773 61.460 61.797 61.864 61.911 61.718 61.701 61.691 61.846 61.890 61.897 45 61.700 61.786 61.471 61.759 61.892 61.908 61.730 61.692 61.691 61.770 61.862 61.918 5

6 61.798 61.788 61.470 61.720 61.879 61.886 61.735 61.688 61.660 61.712 61.839 61.923 67 61.833 61.778 61.448 61.702 61.854 61.865 61.722 61.676 61.650 61.720 61.820 61.918 78 61.833 61.775 61.447 61.703 61.820 61.842 61.709 61.667 61.640 61.759 61.811 61.904 89 61.797 61.770 61.484 61.687 61.796 61.821 61.700 61.658 61.631 61.759 61.814 61.884 9

10 61.759 61.768 61.502 61.678 61.774 61.809 61.714 61.653 61.622 61.755 61.814 61.863 10

11 61.720 61.763 61.560 61.698 61.766 61.802 61.714 61.644 61.625 61.747 61.796 61.854 1112 61.702 61.757 61.621 61.701 61.776 61.812 61.716 61.684 61.648 61.760 61.790 61.883 1213 61.703 61.745 61.694 61.685 61.783 61.843 61.709 61.708 61.655 61.756 61.806 61.888 1314 61.687 61.722 61.797 61.711 61.804 61.853 61.705 61.724 61.692 61.747 61.825 61.881 1415 61.678 61.716 61.881 61.742 61.826 61.863 61.710 61.730 61.701 61.724 61.826 61.893 15

16 61.698 61.710 61.979 61.718 61.829 61.864 61.714 61.734 61.703 61.712 61.821 61.931 1617 61.701 61.689 61.977 61.703 61.838 61.853 61.712 61.737 61.701 61.738 61.807 61.906 1718 61.685 61.678 61.974 61.698 61.861 61.855 61.716 61.736 61.693 61.750 61.800 61.854 1819 61.711 61.663 61.972 61.705 61.883 61.846 61.719 61.728 61.680 61.747 61.794 61.864 1920 61.742 61.659 61.945 61.746 61.909 61.831 61.729 61.729 61.667 61.745 61.790 61.858 20

21 61.718 61.646 61.897 61.729 61.911 61.842 61.737 61.728 61.654 61.735 61.810 61.829 2122 61.703 61.659 61.895 61.725 61.906 61.885 61.749 61.724 61.655 61.724 61.839 61.866 2223 61.698 61.664 61.896 61.739 61.910 61.896 61.755 61.718 61.655 61.711 61.902 61.852 2324 61.705 61.628 61.866 61.744 61.898 61.922 61.756 61.716 61.651 61.692 61.934 61.836 2425 61.746 61.621 61.817 61.751 61.889 61.919 61.770 61.711 61.644 61.683 61.939 61.859 25

26 61.729 61.631 61.778 61.769 61.895 61.887 61.777 61.718 61.637 61.667 61.922 61.875 2627 61.725 61.641 61.756 61.775 61.896 61.839 61.776 61.752 61.640 61.649 61.907 61.857 2728 61.739 61.650 61.745 61.771 61.895 61.782 61.760 61.760 61.637 61.628 61.894 61.822 2829 61.744 61.747 61.779 61.902 61.764 61.728 61.760 61.638 61.697 61.912 61.805 2930 61.751 61.758 61.773 61.915 61.758 61.699 61.756 61.735 61.855 61.908 61.810 3031 61.769 61.904 61.722 61.752 61.923 61.819 31

TOTAL 1914 1728 1851 1851 1918 1856 1914 1913 1850 1915 1856 1918 TOTALMEAN 61.739 61.714 61.704 61.704 61.856 61.855 61.731 61.714 61.669 61.763 61.855 61.869 MEANMAX 61.838 61.788 61.979 61.979 61.915 61.922 61.777 61.760 61.735 62.018 61.947 61.931 MAXMIN 61.678 61.621 61.410 61.410 61.766 61.758 61.699 61.644 61.622 61.628 61.790 61.805 MIN

SUMMARY FOR THE YEAR 2015 NOTE:Mean water level, 61.759mMaximum daily water level, 62.018 m On 2015-10-02Minimum daily water level, 61.410 m On 2015-04-01

GRAND FALLS FLOWAGE AT GRAND FALLSDAILY MEAN WATER LEVEL IN METERS FOR 2015

TABLE V

WATER LEVELS ARE IN METERS AND ARE REFERENCED TO GEODETIC SURVEY OF CANADA DATUM. WATER LEVELS ARE PROVISIONAL AND ARE SUPPLIED BY ENVIRONMENT CANADA IN COOPERATION WITH WOODLAND PULP LLC

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DAY JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC DAY1 164B 58.1B 63.4B 79.3 140 63.4 96.8 34.3 39.6 289 110 90.9 12 152B 59.5B 61.7B 77.6 119 61.2 95.4 31.1 38.5 365 114 90.3 23 154B 60.0B 61.7B 70.2 106 75.3 86.1 30.9 34.8 320 107 88.6 34 145 59.5B 62.3B 82.1 103 77.9 72.5 31.1 30.6 236 104 89.8 45 109B 58.6B 60.9B 87.5 86.7 73.1 55.2 31.1 29.7 204 101 88.9 5

6 80.7B 60.0B 60.3B 87.5 86.1 74.8 50.7 30.9 39.1 163 98.0 88.3 67 79.3B 60.6B 60.6B 85.5 77.0 74.5 51.8 33.7 34.5 134 86.9 88.1 78 83.5B 60.0B 61.4B 75.9 81.6 72.8 53.8 31.4 32.3 106 69.9 87.5 89 88.3B 59.5B 62.3B 62.3 66.0 73.1 49.6 30.3 30.9 108 67.1 86.4 9

10 91.7BB 58.1B 60.9B 58.3 56.6 71.9 36.8 28.9 30.6 112 61.2 85.8 10

11 86.1B 63.4B 59.2 69.7 50.4 61.4 33.7 29.2 32.0 102 60.0 71.6 1112 75.6B 61.4B 69.7 69.4 51.0 49.0 33.7 30.3 31.7 94.6 59.5 61.2 1213 70.2B 62.6B 90.6 74.5 51.3 52.1 30.3 38.5 30.9 88.3 61.7 58.1 1314 69.9B 63.4B 86.4 93.4 43.6 53.8 28.9 33.1 34.3 82.1 62.0 59.2 1415 52.1B 63.4B 66.5 146 35.1 53.5 29.7 29.2 39.9 89.8 60.3 70.2 15

16 54.7B 62.6B 77.0B 197 41.6 53.5 29.7 28.3 37.4 85.0 59.7 80.7 1617 56.9B 66.3B 70.5B 234 36.2 53.2 30.0 28.2 39.1 58.6 59.5 110 1718 58.3B 64.6B 49.6B 230 35.4 45.0 29.7 28.1 38.2 56.9 59.2 141 1819 61.2 62.0B 68.8B 226 37.9 38.5 29.5 28.3 37.9 57.2 59.2 140 1920 69.1 64.6B 85.8B 227 44.5 38.2 29.2 28.9 37.9 56.1 64.3 133 20

21 85.8B 66.3B 80.1B 272 46.4 53.0 28.9 28.9 33.1 56.9 69.9 116 2122 76.5B 63.7B 81.6B 297 50.1 89.8 28.6 29.5 30.6 57.2 61.4 95.4 2223 68.5B 62.9B 79.6B 311 53.5 96.0 28.6 29.5 30.6 58.1 102 114 2324 57.8B 75.6B 78.2B 314 60.6 106 30.9 29.5 30.6 59.2 117 133 2425 46.7B 66.5B 78.2B 292 66.3 125 32.3 32.3 29.2 58.6 116 135 25

26 68.2B 64.3B 86.1 244 54.1 119 32.3 42.5 28.2 57.8 115 133 2627 49.8B 64.8B 92.6 216 53.8 117 38.2 48.7 28.3 57.8 106 132 2728 55.8B 64.3B 89.8 178 57.8 116 53.5 40.8 28.3 57.5 103 119 2829 59.2B 88.6 179 59.7 121 54.9 39.4 28.9 85.0 93.2 95.4 2930 54.9B 88.1 157 63.4 108 49.3 38.2 102 80.4 91.5 83.5 3031 56.4B 84.7 63.1 36.8 37.7 95.7 85.8 31

TOTAL 2482 1757 2267 4793 1978 2268 1367 1013 1069 3532 2500 3052 TOTALMEAN 80.1 62.7 73.1 160 63.8 75.6 44.1 32.7 35.6 114 83.3 98.4 MEANMAX 164 75.6 92.6 314 140 125 96.8 48.7 102 365 117 141 MAXMIN 46.7 58.1 49.6 58.3 35.1 38.2 28.6 28.1 28.2 56.1 59.2 58.1 MINDAM3 214400 151800 195900 414100 170900 195900 118100 87500 92400 305200 216000 263700 DAM3

SUMMARY FOR THE YEAR 2015 NOTE:Total discharge 2425900 DAMMean discharge, 76.9 m³/sMaximum daily discharge, 365 m³/s On 2015-10-02Minimum daily discharge, 28.1 m³/s On 2015-08-18

ST. CROIX RIVER AT BARINGDAILY MEAN DISCHARGE IN CUBIC METERS PER SECOND FOR 2015

TABLE VI

DATA ARE SUPPLIED BY THE UNITED STATES GEOLOGICAL SURVEY AND ARE PROVISIONALB - ICE

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DAY JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC DAY1 13.725 13.704 13.696 13.998 13.756 13.758 13.699 13.793 13.733 14.103 13.692 13.674 12 13.683 13.708 13.701 13.923 13.705 13.733 13.710 13.748 13.752 14.104 13.806 13.692 23 13.714 13.694 13.696 13.938 13.769 13.733 13.697 13.748 13.731 14.010 13.768 13.707 34 13.682 13.706 13.698 13.992 13.708 13.712 13.731 13.749 13.723 13.848 13.702 13.755 45 13.662 13.704 13.689 13.939 13.670 13.751 13.736 13.759 13.707 13.794 13.703 13.702 5

6 13.716 13.705 13.696 13.934 13.716 13.764 13.718 13.745 13.745 13.757 13.763 13.689 67 13.689 13.699 13.699 13.933 13.697 13.725 13.716 13.768 13.727 13.734 13.785 13.697 78 13.677 13.707 13.681 13.945 13.730 13.723 13.778 13.761 13.728 13.651 13.733 13.706 89 13.714 13.707 13.710 13.880 13.689 13.780 13.732 13.751 13.732 13.660 13.694 13.671 9

10 13.691 13.723 13.705 13.822 13.731 13.773 13.707 13.749 13.745 13.702 13.704 13.726 10

11 13.686 13.726 13.687 14.001 13.699 13.709 13.743 13.752 13.755 13.634 13.721 13.707 1112 13.674 13.695 13.734 14.001 13.749 13.744 13.742 13.751 13.733 13.610 13.781 13.736 1213 13.696 13.697 13.694 13.945 13.714 13.791 13.748 13.770 13.742 13.644 13.765 13.732 1314 13.703 13.735A 13.698 14.016 13.709 13.735 13.755 13.741 13.738 13.625 13.694 13.767 1415 13.683 13.710 13.701 13.987 13.731 13.757 13.756 13.750 13.744 13.737 13.753 13.774 15

16 13.707 13.718A 13.704 13.948 13.720 13.609 13.759 13.750 13.742 13.682 13.695 13.714 1617 13.704 13.735A 13.704 13.943 13.734 13.803 13.757 13.751 13.739 13.638 13.718 13.765 1718 13.711 13.698 13.686 13.943 13.733 13.732 13.758 13.751 13.736 13.671 13.718 13.750 1819 13.693 13.700 13.730 13.905 13.725 13.759 13.759 13.747 13.730 13.661 13.713 13.756 1920 13.723 13.700A 13.696 13.921 13.748 13.735 13.759 13.749 13.723 13.670 13.722 13.698 20

21 13.688 13.704 13.696 14.014 13.742 13.775 13.757 13.750 13.803 13.695 13.727 13.726 2122 13.683 13.690 13.676 13.976 13.742 13.757 13.766 13.752 13.710 13.728 13.715 13.743 2223 13.675 13.711A 13.723 13.995 13.776 13.774 13.756 13.750 13.710 13.763 13.780 13.791 2324 13.691 14.320A 13.718 13.954 13.772 13.781 13.750 13.086 13.725 13.749 13.719 13.762 2425 13.699 13.850 13.730 13.925 13.723 13.837 13.757 12.774 13.758 13.766 13.747 13.751 25

26 13.746 13.696 13.699 13.837 13.720 13.823 13.757 12.773 13.786 13.720 13.687 13.706 2627 13.681 13.684 13.922 13.787 13.765 13.885 13.762 12.769 13.792 13.760 13.682 13.703 2728 13.719 13.694 14.028 13.765 13.699 13.867 13.776 12.770 13.825 13.797 13.742 13.672 2829 13.694 14.018 13.816 13.780 13.839 13.752 12.770 13.753 13.771 13.685 13.704 2930 13.698 14.010 13.710 13.731 13.736 13.702 12.771 13.873 13.716 13.703 13.768 3031 13.706 13.994 13.783 13.754 12.990 13.770 13.709 31

TOTAL 425 385 426 418 426 413 426 419 412 426 412 425 TOTALMEAN 13.697 13.733 13.749 13.923 13.731 13.763 13.744 13.517 13.748 13.747 13.727 13.724 MEANMAX 13.746 14.320 14.028 14.016 13.783 13.885 13.778 13.793 13.873 14.104 13.806 13.791 MAXMIN 13.662 13.684 13.676 13.710 13.670 13.609 13.697 12.769 13.707 13.610 13.682 13.671 MIN

SUMMARY FOR THE YEAR 2015 NOTE:Mean water level, 13.734mMaximum daily water level, 14.320 m On 2015-02-24Minimum daily water level, 12.769 m On 2015-08-27

ST. CROIX RIVER AT MILLTOWN DAMDAILY MEAN WATER LEVEL IN METERS FOR 2015

TABLE VII

WATER LEVELS ARE IN METERS AND ARE REFERENCED TO GEODETIC SURVEY OF CANADA DATUM. THE WATER LEVEL DATA ARE PROVISIONAL AND ARE SUPPLIED BY ENVIRONMENT CANADA IN COOPERATION WITH NEW BRUNSWICK POWER.A - PARTIAL DAY

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APPENDIX 4

HYDROGRAPHS

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130

130.5

131

131.5

132

132.5

133

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

WATER LEVEL IN METERSYEA

R: 2015   STATION ID

: 01AR009 ‐GRAND LAKE AT FO

REST CITY

FIG

UR

E I

MINIM

UM W

ATER

 LEV

EL13

0.43

6m

MAX

IMUM

WAT

ER LEV

EL13

2.57

1m

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1525

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

DISCHARGE IN CUBIC METERS PER SECONDYEA

R: 2015   STATION ID

: 01AR011 ‐FO

REST CITY STR

EAM BELOW FOREST CITY DAM

FIG

UR

E II

MINUMUM

DISCHA

RGE 2.12m³/s

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113

113.5

114

114.5

115

115.5

116

116.5

117

117.5

118

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

WATER LEVEL IN METERSYEA

R: 2015   STATION ID

: 01AR010 ‐SPED

NIC LAKE AT ST. C

ROIX

FIG

UR

E II

I

MINIM

UM W

ATER

 LEV

EL11

4.75

7m

MAX

IMUM

WAT

ER LEV

EL11

7.61

0m

MINIM

UM W

ATER

 LEV

EL11

3.23

3mMINIM

UM W

ATER

 LEV

EL11

3.23

3m

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0102030405060

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

DISCHARGE IN CUBIC METERS PER SECONDYEA

R: 2015   STATION ID

: 01AR004 ‐ST. C

ROIX RIVER

 AT VANCEB

ORO

FIG

UR

E IV

MINIM

UM FLO

W5.66

 m³/s

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61.4

61.5

61.6

61.7

61.8

61.962

62.1

62.2

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

WATER LEVEL IN METERS FOR 2015YEA

R: 2015   STATION ID

: 01AR013 ‐GRAND FALLS FLOWAGE AT GRAND FALLS

FIG

UR

E V

MAX

IMUM

WAT

ER LEV

EL62

.106

m

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050100

150

200

250

300

350

400

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

DISCHARGE IN CUBIC METERS PER SECONDYEA

R: 2015   STATION ID

: 01AR005 ‐ST. C

ROIX RIVER

 AT BARING

The

nor

mal

min

imum

flo

w r

equi

rem

ents

as

cons

inde

red

by t

he S

tate

of

Man

ie's

Dep

artm

ent

of

Env

ironm

ent

Pro

tect

ion

is 2

1.2m

³/s

(750

f³/s

)

FIG

UR

E V

I

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12.6

12.813

13.2

13.4

13.6

13.814

14.2

14.4

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

WATER LEVEL IN METERSYEA

R: 2015   STATION ID

: 01AR014 ‐ST. C

ROIX RIVER

 AT MILLTOWN DAM

Dat

a de

pict

dai

ly w

ater

ele

vatio

ns in

the

for

ebay

of

Mill

tow

n. D

ata

are

prov

ided

by

Env

ironm

ent

Can

ada

in

coop

erat

ion

with

new

Bru

nsw

ick

Pow

er C

opor

atio

n

FIG

UR

E V

II

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APPENDIX 5

WATER QUALTIY DATA

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Appendix: Monthly mean, maximum and minimum temperature, dissolved oxygen, pH, specific conductance, and turbidity on the St. Croix River at Milltown, NB, 2015.

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St. Croix River at Milltown 2015

Page 83: INTERNATIONAL ST. CROIX RIVER WATERSHED …€¦ · CROIX RIVER WATERSHED BOARD ANNUAL REPORT 2015 ST. ... The International St. Croix River Watershed Board ... The Board’s annual
Page 84: INTERNATIONAL ST. CROIX RIVER WATERSHED …€¦ · CROIX RIVER WATERSHED BOARD ANNUAL REPORT 2015 ST. ... The International St. Croix River Watershed Board ... The Board’s annual

Appendix: Daily mean, maximum and minimum temperature and specific conductance on the St. Croix River at Forest City, NB, 2015.

Page 85: INTERNATIONAL ST. CROIX RIVER WATERSHED …€¦ · CROIX RIVER WATERSHED BOARD ANNUAL REPORT 2015 ST. ... The International St. Croix River Watershed Board ... The Board’s annual

Grab Sample Results

St. Croix River at Milltown (NB01AR0021), 2015

Units Guideline2 Jan. 15 Apr. 22 June 24 Aug. 5 Sept. 14 Nov. 18

Alkalinity, Total (CaCO3)

mg/L <20 <20 <20 <20 <20 <20

Aluminum1 mg/L 0.1 0.108 0.151 0.129 0.058 0.085 0.126

Antimony1 µg/L 0.04 0.03 0.04 0.04 0.04 0.04

Arsenic1 µg/L 5 0.33 0.32 0.57 0.61 0.74 0.40

Barium1 mg/L 0.006 0.004 0.007 0.007 0.009 0.006

Beryllium1 µg/L 0.01 0.01 0.01 <0.01 0.01 0.01

Boron1 mg/L <0.01 <0.01 <0.01 <0.01 <0.01 <0.01

Cadmium1 µg/L calculated 0.02 0.02 <0.02 0.03 0.04 0.03

Calcium1 mg/L 3.75 2.47 3.49 4.47 4.73 3.83

Carbon, Total Organic

mg/L 7.69 6.02 8.39 7.46 8.51 9.24

Chloride mg/L 120 3.9 2.7 3.6 7.7 6.7 3.4

Chromium1 µg/L 8.9 0.16 0.25 0.26 0.14 0.17 0.19

Cobalt1 µg/L 0.04 0.10 0.10 0.04 0.05 0.04

Colour, apparent

Colour units

54 43 60 42 61 58

Conductivity µS/cm 44.6 30.1 40.1 70.1 82.7 43.2

Copper1 µg/L calculated 0.32 0.40 0.48 0.36 0.46 0.39

Iron1 mg/L 0.3 0.15 0.21 0.30 0.16 0.23 0.20

Lead1 µg/L calculated 0.10 0.17 0.18 0.08 0.13 0.13

Magnesium1 mg/L 0.63 0.51 0.65 0.70 0.76 0.69

Manganese1 mg/L 0.032 0.031 0.063 0.048 0.051 0.031

Molybdenum1 µg/L 73 0.08 0.06 0.10 0.14 0.20 0.09

Nickel1 µg/L calculated 0.25 0.41 0.44 0.26 0.37 0.31

Nitrate as N mg/L 2.9 0.03 0.04 0.03 0.08 0.10 0.05

Nitrogen, Total

mg/L 0.28 0.29 0.38 0.38 0.47 0.39

pH pH units

6.5-9.0 7.03 6.81 7.06 7.29 7.35 7.01

Phosphorus, Total

mg/L 0.033 0.014 0.016 0.020 0.022 0.034 0.018

Potassium1 mg/L 0.5 0.4 0.4 0.7 1.2 0.7

Selenium1 µg/L 1 0.06 0.04 0.06 0.04 0.06 0.06

Silver1 µg/L 0.1 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01

Sodium1 mg/L 4.65 2.72 3.63 8.54 10.32 5.74

Strontium1 mg/L 0.017 0.012 0.017 0.023 0.023 0.019

Sulfate mg/L 5.1 2.5 2.6 5.5 10.0 4.2

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Thallium1 µg/L 0.8 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01

Tin1 µg/L <0.05 <0.05 <0.05 <0.05 <0.05 <0.05

Titanium1 µg/L 1.08 2.29 2.21 0.62 0.90 1.20

Turbidity NTU 1.4 2.9 3.1 1.0 1.5 1.9

Uranium1 µg/L 15 0.07 0.05 0.07 0.06 0.06 0.07

Vanadium1 µg/L 0.25 0.31 0.37 0.29 0.42 0.31

Zinc1 µg/L calculated4 2.60 2.21 1.95 2.33 3.14 2.48

Notes: µg/L - microgram per litre; mg/L - milligrams per litre; CaCO3 - calcium carbonate; µS/cm - microSiemens per centimetre; NTU - nephelometric turbidity units Highlighted cell indicates exceedence. 1 Measured as total recoverable. 2 Guidelines refer to the Canadian Council of Ministers of the Environment (CCME) guidelines unless otherwise indicated. 3 OMOE, 1994. 4 BC MOE, 1999.

St. Croix River at Forest City (NB01AR0151), 2015

Units Guideline2 Jan. 15 Apr. 22 June 24 Aug. 5 Sept. 14 Nov. 18

Alkalinity, Total (CaCO3)

mg/L <20 <20 <20 <20 <20 <20

Aluminum1 mg/L 0.1 0.016 0.013 0.016 0.015 0.009 0.008

Antimony1 µg/L 0.04 0.03 0.03 0.03 0.03 0.04

Arsenic1 µg/L 5 0.31 0.22 0.18 0.31 0.29 0.27

Barium1 mg/L 0.002 0.002 0.002 0.002 0.002 0.002

Beryllium1 µg/L <0.01 <0.01 <0.01 <0.01 <0.01 <0.01

Boron1 mg/L <0.01 <0.01 <0.01 <0.01 <0.01 <0.01

Cadmium1 µg/L calculated <0.02 <0.02 <0.02 <0.02 <0.02 <0.02

Calcium1 mg/L 4.51 4.06 4.11 4.18 4.18 4.22

Carbon, Total Organic

mg/L 3.74 3.46 3.94 4.03 3.85 3.49

Chloride mg/L 120 1.5 1.4 1.4 1.4 1.5 1.4

Chromium1 µg/L 8.9 0.05 0.04 0.06 0.05 0.05 0.05

Cobalt1 µg/L <0.01 <0.01 <0.01 <0.01 <0.01 <0.01

Colour, apparent

Colour units

14 12 13 10 10 9

Conductivity µS/cm 32.3 30.3 31.2 31.7 32.9 32.5

Copper1 µg/L calculated 0.23 0.27 0.26 0.26 0.25 0.24

Iron1 mg/L 0.3 0.02 0.02 0.02 0.02 0.01 0.02

Lead1 µg/L calculated <0.03 <0.03 <0.03 <0.03 <0.03 <0.03

Magnesium1 mg/L 0.63 0.57 0.59 0.60 0.59 0.61

Manganese1 mg/L 0.007 0.004 0.006 0.006 0.005 0.008

Molybdenum1 µg/L 73 0.06 0.06 0.05 0.05 0.05 0.07

Nickel1 µg/L calculated 0.13 0.13 0.13 0.15 0.13 0.11

Nitrate as N mg/L 2.9 0.02 0.02 <0.02 0.07 0.02 <0.02

Page 87: INTERNATIONAL ST. CROIX RIVER WATERSHED …€¦ · CROIX RIVER WATERSHED BOARD ANNUAL REPORT 2015 ST. ... The International St. Croix River Watershed Board ... The Board’s annual

Nitrogen, Total mg/L 0.14 0.16 0.18 0.18 0.18 0.16

pH pH units

6.5-9.0 7.30 7.19 7.26 7.31 7.34 7.31

Phosphorus, Total

mg/L 0.033 0.005 0.004 0.006 0.006 0.005 0.005

Potassium1 mg/L <0.4 <0.4 <0.4 <0.4 <0.4 <0.4

Selenium1 µg/L 1 0.05 0.05 0.05 0.04 0.04 0.03

Silver1 µg/L 0.1 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01

Sodium1 mg/L 1.46 1.34 1.31 1.37 1.35 1.40

Strontium1 mg/L 0.022 0.021 0.022 0.023 0.022 0.023

Sulfate mg/L 1.9 1.5 1.5 1.7 1.7 1.6

Thallium1 µg/L 0.8 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01

Tin1 µg/L <0.05 <0.05 <0.05 <0.05 <0.05 <0.05

Titanium1 µg/L 0.14 0.24 0.24 0.15 0.14 0.11

Turbidity NTU 0.5 0.4 0.7 0.8 0.5 0.5

Uranium1 µg/L 15 0.03 0.03 0.03 0.03 0.03 0.02

Vanadium1 µg/L 0.04 0.03 0.07 0.07 0.06 0.07

Zinc1 µg/L calculated4 0.13 0.48 0.20 0.21 0.18 0.17

Notes: µg/L - microgram per litre; mg/L - milligrams per litre; CaCO3 - calcium carbonate; µS/cm - microSiemens per centimetre; NTU - nephelometric turbidity units Highlighted cell indicates exceedence. 1 Measured as total recoverable. 2 Guidelines refer to the Canadian Council of Ministers of the Environment (CCME) guidelines unless otherwise indicated. 3 OMOE, 1994. 4 BC MOE, 1999.

Page 88: INTERNATIONAL ST. CROIX RIVER WATERSHED …€¦ · CROIX RIVER WATERSHED BOARD ANNUAL REPORT 2015 ST. ... The International St. Croix River Watershed Board ... The Board’s annual
Page 89: INTERNATIONAL ST. CROIX RIVER WATERSHED …€¦ · CROIX RIVER WATERSHED BOARD ANNUAL REPORT 2015 ST. ... The International St. Croix River Watershed Board ... The Board’s annual

APPENDIX 6

MILLTOWN FISH DATA

Page 90: INTERNATIONAL ST. CROIX RIVER WATERSHED …€¦ · CROIX RIVER WATERSHED BOARD ANNUAL REPORT 2015 ST. ... The International St. Croix River Watershed Board ... The Board’s annual
Page 91: INTERNATIONAL ST. CROIX RIVER WATERSHED …€¦ · CROIX RIVER WATERSHED BOARD ANNUAL REPORT 2015 ST. ... The International St. Croix River Watershed Board ... The Board’s annual

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