David Nail USGS Geospatial Liaison to Indiana March 13 th, 2007 Update on National Hydrography Data.

David Nail

USGS Geospatial Liaison to Indiana

March 13th, 2007

Update on National Hydrography Data

Outline of Presentation

Overview of NHD

What’s New with NHD

High Resolution status for U.S.A.

High Resolution status for Indiana

Examples of NHD applications/usage around the country

Overview of NHD

A Framework dataset that includes:

Hydrographic features for making maps

A national stream addressing system

A modeling network for navigating upstream/downstream

A maintenance infrastructure

Overview of NHD continued

A Framework dataset that includes:

User updates

Distributed formats – personal geodatabase, shapefiles, coverages

Compatible with ArcHydro Model & Tools

Overview of NHD continued

Medium Resolution, 1:100K scale

High Resolution, 1:24K scale or better

Local Resolution, limited availability, from 1:5K source

What’s New with NHD

New Features

New Event Tables

New NHD Features Underground Conduit – represents underground streams/drains particularly for karst and volcanic geomorphology.

Ephemeral Streams

Intermittent/Perennial Swamp/Marsh

Stormwater – drainage in urban areas.

Levees

Point

Line

Area

New Event Tables

High Resolution status for U.S.A.

High Resolution status for Indiana

Examples of NHD Applications in the Nation

Vermont – Created a regression equation for estimating Intermittent streams.

http://pubs.usgs.gov/sir/2006/5217/pdf/SIR2006-5217_report.pdf


Vermont – Value Added Attributes for the Vermont Hydrography Dataset.

The VAAs are designed to enhance the capabilities of NHD in three areas:

1) Navigation/Traversal;

2) Analysis;

3) Display http://www.vcgi.org/about_vcgi/?page=./projects/vaa/default_content.cfm


Florida – using the NHD as the framework dataset to contain official names, ReachCode designations, basins, geometric network, assessment units and monitoring site locations in support of Watershed management and TMDL development.

http://www.dep.state.fl.us/water/wqssp/nutrients/docs/TAC/tac11_RiversStreamsCriteriaUpdate.pdf


Minnesota – Pollution Control Agency

Assessment reaches (Impaired Waters, 305b and 303d) will be indexed to the National Hydrographic Data.

http://www.pca.state.mn.us/publications/manuals/tmdl-guidancemanual04.pdf

http://www.pca.state.mn.us/water/tmdl/index.html


New York – Department of Environmental Conservation

Use NHD to track & report EPA 305b/303d water quality requirements.

NHD provides the underlying geospatial reference for project development and management within the floodplain

mapping program.

http://www.dec.state.ny.us/website/dow/wgit/fpm/index.html


North Carolina – Stream Mapping Working Group

Creation of a new statewide digital surface waters layer – core design based on the NHD, at 1:5K scale.

Database design is responsive to data sharing, data maintenance and

application development.

http://pmu.dot.state.nc.us/download/about/board/eppc/presentations/2007/StreamMappingUpdate.pdf

Web-based Reach Indexing Tool (WebRIT)

Assisting users in georeferencing their environmental program data to the NHD.

http://www.epa.gov/waters/webrit

http://www.epa.gov/waters/webrit/downloads/WebRIT_Factsheet.pdf


NHDPlus – Medium resolution, 1:100K scale


http://www.horizon-systems.com/nhdplus/data/NHDPLUS_UserGuide.pdf

http://www.horizon-systems.com/nhdplus/

NHDPlus

An integrated suite of application-ready geospatial surface water data products.

It’s the first national effort to integrate:

National Hydrography Dataset (NHD)

National Elevation Dataset (NED)

National Watershed Boundary Dataset (WBD)

National Land Cover Dataset (NLCD)


NHDPlus - Greatly improved 1:100K National Hydrography Dataset

PLUS (8 more components): Value Added Attributes Elevation-based Catchments Catchment Characteristics Headwater Node Areas Cumulative Drainage Area Characteristics Flow Direction, Flow Accumulation, and Elevation Grids Min/Max Elevations and Slopes Flow Volume & Velocity Estimates



StreamStats –

http://water.usgs.gov/osw/streamstats/ssonline.html

NHD Stewardship conference – Denver, CO.

April 24 – 26, 2007

ftp://nhdftp.usgs.gov/Stewardship/Stewardship_Agenda.doc

David Nail USGS Geospatial Liaison to Indiana March 13 th, 2007 Update on National Hydrography Data.

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