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- National_Hydrography_Dataset abstract "The National Hydrography Dataset (NHD) is a digital database of surface water features used to make maps. It contains features such as lakes, ponds, streams, rivers, canals, dams and stream gages for the United States. Cartographers can link to or download the NHD to use in their computer mapping software. The NHD is used to represent surface water on maps and is also used to perform geospatial analysis. It is a digital vector geospatial dataset designed for use in geographic information systems (GIS) to analyze the flow of water throughout the nation. The dataset represents over 7.5-million miles of streams/rivers and 6.5-million lake/ponds.In mapping, the NHD is used with other data themes such as elevation, boundaries, and transportation to produce general reference maps. In geospatial analysis the NHD is used by scientists using GIS technology. This takes advantage of a flow direction network that can be processed to trace the flow of water downstream. A rich set of attributes used to identify the water features includes an identifier, the official name of the feature, the length or area of the feature, and metadata describing the source of the data. The identifier is used in an addressing system to link specific information about the water such as water discharge, water quality, and fish population. Using the basic water features, flow network, linked information, and other characteristics, it is possible to study cause and effect relationships, such as how a source of poor water quality upstream might affect a fish population downstream.The NHD is part of the United States Geological Survey The National Map for the United States. The NHD is also linked with similar datasets representing the surface water for Canada and Mexico. The dataset primarily maps features a 1:24,000-scale, but in certain areas provides detail at 1:5,000-scale. A version of the NHD called the NHDPlus is integrated with elevation and other landscape data to create detailed drainage catchments and flow volume and velocity estimates for streams and rivers of the U.S. at 1:100,000-scale. This data is available from the United States Environmental Protection Agency.".
- National_Hydrography_Dataset wikiPageExternalLink nhd.usgs.gov.
- National_Hydrography_Dataset wikiPageID "30062184".
- National_Hydrography_Dataset wikiPageLength "2514".
- National_Hydrography_Dataset wikiPageOutDegree "16".
- National_Hydrography_Dataset wikiPageRevisionID "622258004".
- National_Hydrography_Dataset wikiPageWikiLink Canada.
- National_Hydrography_Dataset wikiPageWikiLink Canal.
- National_Hydrography_Dataset wikiPageWikiLink Canals.
- National_Hydrography_Dataset wikiPageWikiLink Category:Hydrography.
- National_Hydrography_Dataset wikiPageWikiLink Dam.
- National_Hydrography_Dataset wikiPageWikiLink Dams.
- National_Hydrography_Dataset wikiPageWikiLink GIS.
- National_Hydrography_Dataset wikiPageWikiLink Geographic_information_system.
- National_Hydrography_Dataset wikiPageWikiLink Geographic_information_systems.
- National_Hydrography_Dataset wikiPageWikiLink Lake.
- National_Hydrography_Dataset wikiPageWikiLink Mexico.
- National_Hydrography_Dataset wikiPageWikiLink Pond.
- National_Hydrography_Dataset wikiPageWikiLink Ponds.
- National_Hydrography_Dataset wikiPageWikiLink River.
- National_Hydrography_Dataset wikiPageWikiLink Rivers.
- National_Hydrography_Dataset wikiPageWikiLink Stream.
- National_Hydrography_Dataset wikiPageWikiLink Stream_gage.
- National_Hydrography_Dataset wikiPageWikiLink Stream_gauge.
- National_Hydrography_Dataset wikiPageWikiLink Streams.
- National_Hydrography_Dataset wikiPageWikiLink The_National_Map.
- National_Hydrography_Dataset wikiPageWikiLink United_States.
- National_Hydrography_Dataset wikiPageWikiLink United_States_Environmental_Protection_Agency.
- National_Hydrography_Dataset wikiPageWikiLink United_States_Geological_Survey.
- National_Hydrography_Dataset wikiPageWikiLinkText "National Hydrography Dataset".
- National_Hydrography_Dataset hasPhotoCollection National_Hydrography_Dataset.
- National_Hydrography_Dataset wikiPageUsesTemplate Template:Context.
- National_Hydrography_Dataset wikiPageUsesTemplate Template:Hydrology-stub.
- National_Hydrography_Dataset subject Category:Hydrography.
- National_Hydrography_Dataset hypernym Database.
- National_Hydrography_Dataset type Article.
- National_Hydrography_Dataset type BiologicalDatabase.
- National_Hydrography_Dataset type Article.
- National_Hydrography_Dataset type Page.
- National_Hydrography_Dataset comment "The National Hydrography Dataset (NHD) is a digital database of surface water features used to make maps. It contains features such as lakes, ponds, streams, rivers, canals, dams and stream gages for the United States. Cartographers can link to or download the NHD to use in their computer mapping software. The NHD is used to represent surface water on maps and is also used to perform geospatial analysis.".
- National_Hydrography_Dataset label "National Hydrography Dataset".
- National_Hydrography_Dataset sameAs m.0g54375.
- National_Hydrography_Dataset sameAs Q6973463.
- National_Hydrography_Dataset sameAs Q6973463.
- National_Hydrography_Dataset wasDerivedFrom National_Hydrography_Dataset?oldid=622258004.
- National_Hydrography_Dataset isPrimaryTopicOf National_Hydrography_Dataset.