1 / 13

NHD Plus as a geospatial framework for drought indicators

NHD Plus as a geospatial framework for drought indicators. Jim Verdin. A Digital Watershed connects geospatial and temporal water resources data. USGS NWIS Streamflow. Digital Watershed. NHDPlus. NRCS Snotel. NOAA ASOS. NHDPlus.

goro
Download Presentation

NHD Plus as a geospatial framework for drought indicators

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. NHD Plus as a geospatial framework for drought indicators Jim Verdin

  2. A Digital Watershed connects geospatial and temporal water resources data USGS NWIS Streamflow Digital Watershed NHDPlus NRCS Snotel NOAA ASOS

  3. NHDPlus • An integrated suite of application-ready, geospatial, surface water data products • A national scale integration of • National Hydrography Dataset (NHD) • 1:100,000 • National Elevation Dataset (NED) • 30 meter resolution • Watershed Boundaries Dataset (WBD) • 1:24,000

  4. National Hydrography Dataset • Medium resolution (1:100,000) NHD used in NHDPlus development

  5. National Elevation Dataset • Used snapshot of 1-arcsecond (30 m) NED http://ned.usgs.gov

  6. Watershed Boundary Dataset http://www.ncgc.nrcs.usda.gov/products/ datasets/watershed/

  7. NHDPlus – What’s Inside? • NHD Feature Classes & Tables • Greatly improved 1:100K National Hydrography Dataset • NED Elevation Grids (1-arc-second) • Additional Components: • Stream Network Value Added Attributes (VAA) • Flow Direction and Flow Accumulation Grids • Elevation-based Reach Catchments • Catchment Attributes • mean annual temperature & precipitation from prism • % of each of the 21 land use classes from 1992 NLCD • Streamline Attributes • min/max elevations • slope • mean annual flow estimates • velocity • Cumulative Upstream Area Attributes for Every Grid Cell • Network Locations of USGS Stream Gaging Stations

  8. Network Locations of USGS Stream Gages Gage ID: 09334500 Station Name: White Canyon Near Hanksville, UT Reach Code: 150004001602 Drainage Area: 276 sq. mi. Maximum Flow: 1,370 cfs Average Flow: 5.1 cfs Plus other info from NWIS

  9. Upstream trace above point of interest

  10. Network Locations of USGS Stream Gages

  11. Interactive drought index composition • Pick and choose among potential drought index location points • Generate tributary area • Pick and choose among stations and reservoirs in tributary area • Link to CUAHSI HIS observation data for stations and reservoirs • Calculate index and evaluate results • Iterate as desired

  12. Questions?

More Related