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Thursday, March 28 • 11:00 - 11:30
NHDPlus High Resolution Value Added Attributes

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The NHDPlus High Resolution (NHDPlus HR) is a scalable geospatial hydrography framework built from the high resolution National Hydrography Dataset, the Watershed Boundary Dataset, and elevation data, primarily ⅓ arc-second 3D Elevation Program data. The NHDPlus HR allows for modeling and assessment at a local, neighborhood level, while nesting seamlessly into the national context.
Similar to the medium resolution NHDPlus version 2 (NHD Plus V2), the NHDPlus HR is comprised of a network of stream reaches, elevation-based catchment areas, flow surfaces, and value-added attributes (VAAs) that enhance stream network navigation, analysis, and data display. NHDPlus HR VAAs provide attributes such as stream flow, velocity, temperature and precipitation distributions, and cumulative drainage areas. NHDPlus HR VAAs also allow the selection of more generalized stream networks, as well as upstream or downstream navigation.
Complementing and enhancing the various spatial datasets, the NHDPlus HR VAAs provides greater detail than the NHDPlus V2, thereby supporting national, regional, or local analysis and modeling, while retaining the spatial accuracy of the highest-resolution, nationally available datasets.


Ariel Doumbouya

US Geological Survey

Thursday March 28, 2019 11:00 - 11:30 MDT
Bitterroot Room Red Lion Downtowner, 1800 W Fairview Ave

Attendees (1)