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National Operational Hydrologic Remote Sensing Center

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 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

Dataset Size Last Modified
Basins of Arkansas-Red Basin RFC1222 KB2005-11-09
Basins of Alaska-Pacific RFC96 KB2002-11-25
Basins of Colorado Basin RFC1870 KB2007-09-27
Basins of California-Nevada RFC631 KB2007-09-12
Basins of Lower Mississippi RFC834 KB2002-11-25
Basins of Mid-Atlantic RFC493 KB2007-12-11
Basins of Missouri Basin RFC3188 KB2007-12-11
Basins of North-Central RFC2767 KB2006-10-23
Basins of North-East RFC526 KB2007-09-12
Basins of North-West RFC1378 KB2005-11-09
Basins of Ohio Basin RFC1177 KB2007-12-10
Basins of South-East RFC1147 KB2005-11-09
Basins of West Gulf RFC1759 KB2006-10-02
RFC Boundaries2613 KB2006-02-16
NOHRSC Flight Lines519 KB2006-11-13

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

Dataset Size Last Modified
Canadian Province Boundaries3305 KB2007-06-13
Canadian National Boundaries1750 KB2004-05-11
Alaskan Boundaries971 KB2003-11-05
US National Boundaries909 KB2002-11-25
US State Boundaries2241 KB2007-06-13
Mexico State Boundaries241 KB2004-05-11
NSA Discussion Regions1815 KB2006-10-03
NSA Discussion Subregions284 KB2006-01-09
US County Boundaries1611 KB2006-01-09
Alaskan County Warning Areas1086 KB2003-08-11
US County Warning Areas1251 KB2003-08-11
Alaskan 6-digit HUCs622 KB2002-11-25
US 6-digit HUCs4569 KB2008-03-18
Highways4091 KB2002-11-25
US Lakes and Reservoirs1672 KB2002-11-25
Rivers and Streams36923 KB2006-02-16
Major Rivers8676 KB2006-02-16
US Cities874 KB2005-11-14
Skiing Locations28 KB2007-04-16

Notes for Internet Explorer users

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

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

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.



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National Operational Hydrologic Remote Sensing Center
1735 Lake Drive W.
Chanhassen, MN 55317

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Page last modified: Apr 16, 2007
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