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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