National Hydrography Dataset (EPAN 2010)
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The document discusses the National Hydrographic Dataset (NHD), its applications, data sources, and stewardship program. It specifically focuses on NHD stewardship in West Virginia. The key points are: 1) NHD is a comprehensive dataset of US surface water features used for modeling, analysis, and as a cartographic basemap. 2) In WV, the NHD stewardship program involves the WV Office of GIS Coordination and NRCS overseeing updates to the NHD and Watershed Boundary Dataset with support from the WV GIS Technical Center. 3) The year one stewardship proposal in WV focuses on establishing the program, editing known errors, and targeted editing
National Hydrography Dataset (EPAN 2010)
- 1. The WV NHD Stewardship ProgramEvan J Fedorko
- 2. OutlineWhat is NHD?NHD ApplicationsNHD Data SourceNHD Stewardship OverviewNHD Stewardship in WVHow you can participate in StewardshipWhere to get NHD Data and tools
- 3. NHDThe National Hydrographic Dataset is a comprehensive set of digital spatial data representing the surface water of the United States using common features such as lakes, ponds, streams, rivers, canals, and oceans.Also includes the Watershed Boundary Dataset, aka WBD.
- 4. NHD ApplicationsBase layer for hydro features in cartographic applications.Model features include:Flow direction network that traces the water downstream or upstream.An addressing system to link specific information about the water to a point such as water discharge, water quality, and fish population.
- 5. NHD Applications (2)Model features allow for advanced analysis such as:Publishing andAnalyzing water pollution dataPrioritizing watersheds for conservationIncident command forToxic spills into water-ways
- 6. NHD DataScale of NHD data varies by stateWest Virginia, and much of the US, is 1:24,000 scale dataIncludes all water features from USGS Topographic mapsThis means much of WV’s data is quite old.
- 7. StewardshipThe term “stewardship” refers to the mechanism by which the NHD data is improved and maintained.Large Federal agencies do not have the knowledge to maintain these datasets, so…Local Stewards are encouraged to take over and maintain this data, with support from the USSGS
- 8. Stewardship in WVMemorandum of UnderstandingBetween WV Office of GIS Coordinator, NRCS and the USGSIdentifies two stewards: WVOGC (NHD), NRCS (WBD)Identifies a technical lead: WVGISTCSigned, sealed and delivered!Year one proposalSubmitted and approved!
- 9. Stewardship in WV (2)USGS NHD Stewardship ProgramNHD NationalWV Office of GIS CoordinationNHD StewardStewardship Technical LeadWV GIS Technical CenterPrimary Sub-StewardsNHD Error Reporting Toole.g., WVDEP, USFS, WVDNRStakeholders andStewardship MechanismsNHD Users GroupNHD Training and PoliciesNHD Data Users
- 10. Stewardship in WV (3)Year One ProposalPlayers: WVGISTC, NRAC, WVDEPTask 1: Stewardship program establishment and organizationTask 2: Editing of known errorsTask 3: High change area targeted editing (research)
- 11. Stewardship in WV (4)How can you participate?By noting and reporting errors in NHDBy submitting your water feature data to the NHD stewardsBy attending free training on using the NHD
- 12. NHD DataData: Nhd.usgs.govwww.wvgis.wvu.edu (WVGISTC), search keyword “NHD”Available from USGS and WVGISTC in ESRI Geodatabase format, and from WVGISTC additionally as shapefilesAvailable nationwide from USGS and for WV from WVGISTC
- 13. NHD Toolsnhd.usgs.gov/tools.htmlHydro Event Management Tool*Network capabilities can be exploited with ESRI Utility Network Analyst