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These standard attributes are typically embedded into the default attribute table, which is directly linked to the geospatial features. The main objective of this project was to develop a dataset of large, anthropogenic barriers that are spatially linked to the National Hydrography Dataset Plus Version 1 (NHDPlusV1) for the conterminous U.S. and the high resolution National Hydrography Dataset (NHD) for Alaska (1:63,000 scale) and Hawaii (1:24,000 scale) to facilitate GIS analyses based on the NHDPlusV1/NHD and NID datasets. Geospatial data normally have a certain set of standard attributes, such as an identification number, the type of feature, and name of the feature. The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that make up the nation's surface water drainage system. U.S. Department of the Interior National Hydrography Dataset Plus (NHDPlus) is a national geospatial surface water framework.Geospatial analysts and modelers use this framework to support water resources applications. NHD data was originally developed at 1:100,000-scale and exists at that scale for the whole country. The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that make up the nation's surface water drainage system. This spatial layer is a subset of the National Hydrography Dataset (NHD) showing waterbodies in the upper Washita River basin in southwestern Oklahoma. High resolution NHD adds detail to the original 1:100,000-scale NHD. It is a companion dataset to the National Hydrography Dataset (NHD) and a component of the NHDPlus High Resolution (NHDPlus HR). Open-File Report 2019–1096. National Geospatial Program. NHD data was originally developed at 1:100,000-scale and exists at that scale for the whole country. The U.S. EPA developed and maintains NHDPlus in … Other_Citation_Details: The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that make up the nation's surface water drainage system. Different methods for determining catchments (incremental drainage areas) for stream segments of the medium-resolution (1:100,000-scale) National Hydrography Dataset (NHD) were evaluated by the U.S. Geological Survey (USGS), in cooperation with the U.S. Environmental Protection Agency (USEPA). The high-resolution NHD was originally created using 1:24,000-scale data. The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that make up the nation's surface water drainage system. The National Hydrography Dataset Plus High Resolution (NHDPlus HR) is a scalable geospatial hydrography framework built from the High Resolution (1:24,000-scale or better) National Hydrography Dataset (NHD), nationally complete Watershed Boundary Dataset (WBD), and ⅓-arc-second (10-meter ground spacing) 3D Elevation Program (3DEP) digital elevation model (DEM) data. Simley, Jeffrey, and Doumbouya, Ariel, 2012, National hydrography dataset—Linear referencing: U.S. Geological Survey Fact Sheet 2012–3068, 2 p. Contents Linking Information About Geospatial Data ABSTRACT. The NHD is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that comprise the nation's surface water drainage system. User’s Guide for the National Hydrography . Dataset Plus (NHDPlus) High Resolution. NHD data was originally developed at 1:100,000 scale and exists at that scale for the whole country.

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