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Alan Rea
USGS
National Geospatial Program
Geospatial Products ofthe USGS NationalGeospatial Program forLake and WatershedManagement
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Geography underpins water scienceand management
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Area of NationalLeadership
Program Emphasis
A-16 Co-Lead forTerrestrial Elevation
3D Elevation Program (3DEP)
A-16 Co-Lead for InlandWaters (Hydrography)
National Hydrography Dataset(NHD)Watershed Boundaries Dataset(WBD)
National Coverage ofTopographic Maps
U.S. Topo and Alaska Mapping
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3D Elevation Program (3DEP)
• Applies lidar technology to acquire and distribute
three-dimensional data of bare earth, vegetation and
structures at centimeter-level accuracy
• Increases the quality level of lidar being acquired toenable more accurate understanding, modeling, andprediction
• Goal to acquire national coverage in 8 years to serve abroad range of critical applications
+ 5+3DEP Data QualityImproves and Enables Applications
10 meter resolution10 meter resolution
1 meter resolution1 meter resolution
+ 6+Enable: Flood Risk Management
Red River, MNlidar showschanging rivermorphology
QL2 provides 10cm of additionalaccuracy overQL3 – critical toflood riskmanagement,particularly inareas of low relief
Centimeters Matter!
Image from Fugro Geospatial
+ 7+Enable: Fire Disturbance Assessment
Hayman Fire, CO
Pre-fire
Post-fire
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Hydrography
National Hydrography Dataset (NHD)
Watershed Boundary Dataset (WBD)
NHDPlus (1:100K, with 1:24K or better coming soon)
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Hydrography near Tampa
+ 11+NHDPlus High Resolution
Builds on success of NHDPlus Medium Resolution (1:100K-scale)
Integrates NHD, NED, and WBD
Addresses need for a single hydrographic frame of reference
User community currently divided:
NHDPlus (100K) regional/national applications
NHD HiRes (24K or better) local/state applications
NHDPlus HiRes provides both higher resolution data and ability togeneralize to many different scales so that all users can link their datato the same core network
Initial timeframes
Tools and procedures — Plan to have operational in Q3 FY16
Production will proceed by Sub-region, from upstream to downstream
FY 16 Goal: 1/4 of CONUS done (6 Regions)
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Integrating the Landscape with the StreamNetwork at 24K
NHD
WBD
NationalElevationDataset (NED)
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NHDPlusHR Production Status andPlans
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StreamStats
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Modelvelocity
Measuredvelocity
Spill site
Intake
+ 15+Operational Benefits Example
Evaluation of mercury samplingsites, fish mercury concentrations,and upstream gold and mercurymines
Visualizes possible relationshipsbetween mercury concentration anddrainage patterns
Can be used to prioritize additionalsampling locations and analysesprior to field visits
Cost Savings by Prioritizing Field Efforts
+ 16+Operational Benefits Example
Texas Water Development Board study of194 major reservoirs at risk for sedimentation
Annual loss of 90,000 acre-feet due tosedimentation exceeds projected increasesfrom new reservoirs
Reservoirs scored based on sedimentationweighting based on watershed area, slope,soil type, stream length and density, precipitation,reservoir characteristics, etc.
Most at-risk reservoirs identified for watershedprotection planning
TX Reservoir Sedimentation Analyses
+ 17+Customer Service Benefits Example
Web-based tools usingNHDPlus as spatial framework
PDF reports with maps andattributes delivered based onuser selections from 12,500stream segments in ConnecticutRiver watershed
Customers can perform ownanalyses on-the-fly
Connecticut River Watershed Atlas
+ 18+Customer Service Benefits Example
Supports widespread interest in GIS data onimpaired waters
On-line public access to spatial and tabulardata for viewing or download
Over 40,000 tracked waters consolidatedfrom state listings of impaired waters andTMDLs indexed to the NHDPlus
Linked to other EPA on-line documents andtools including WATERS
EPA Impaired Waters and TMDLs Datasets
Impaired Waters
TMDLs
+ 19+Cartographic products
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Questions?
Alan Rea, P.E., HydrologistNational Hydrography DatasetU.S. Geological Survey230 Collins Road, Boise ID 83702(208)387-1323 ahrea@usgs.gov
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