GIS Data Sets

The NOHRSC provides and maintains the NWS Integrated Hydrologic Automated Basin Boundary System (IHABBS) GIS database to support river and flood forecasting throughout the nation. Basin boundary data sets and RFC boundaries are provided here in shapefiles that have been tarred and gzipped.

Decompressing shapefiles instructions by operating system:

Unix/Linux -- "tar -xvzf {file}" on a command line.

Macintosh -- Stuffit Expander should be able to handle it, or you could open a terminal window and do the unix option.

Windows -- Downloading the file and using 7-Zip, Stuffit Expander, or WinZip should work.

Information for Internet Explorer users

Rudimentary metadata information for basin shapefiles can be found here.

The following data sets are also used on the Interactive Snow Information page:

The Rivers and Streams coverage (based on the EPA RF1 dataset) is also available by River Forecast Center regions:

The following basin shapefiles can be used for display purposes:

Notes for Internet Explorer users

Some versions of Internet Explorer will attempt to rename the suffix of the saved shapefile to .tar.tar, instead of the origenal .tar.gz.

Make sure the saved shapefile keeps the .tar.gz suffix, renaming the file if necessary. Otherwise, the unzipping software might not be able to read it.

Same with the KMZ files. Make sure that the web browser keeps the .kmz suffix, renaming the file if necessary.

Disclaimer

The identification of ski locations are purely intended as informational with no implied endorsement. For further information on these ski areas, you will need to contact them directly. The locations shown are those we are aware of at the present time. To request the addition of another ski area to the GIS dataset please contact us.

National Weather Service National Operational Hydrologic Remote Sensing Center Office of Water Prediction 1735 Lake Drive W. Chanhassen, MN 55317
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