United States Department of Agriculture
Natural Resources Conservation Service
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National Water and Climate Center



Spatial climate products (digital maps) are available through the links below. These products were developed through a partnership between the NRCS National Water and Climate Center (NWCC) and the PRISM Climate Group at Oregon State University (OSU), developers of PRISM (the Parameter-elevation Regressions on Independent Slopes Model).

Click to view map

This partnership has resulted in the production of the best and, in many cases, the first high-spatial-resolution climate map products for the United States. PRISM is an analytical tool that uses point data, a digital elevation model, and other spatial data sets to generate gridded estimates of monthly, yearly, and event-based climatic parameters, such as precipitation, temperature, snowfall, degree days, and dew point.

All products now available have been thoroughly scrutinized, having passed a strenuous peer-review process in cooperation with state and regional climatologists across the nation. The goal is to deliver the highest quality and most accurate climate maps of the U.S. ever produced.

  • Cartographic-Quality Maps

    Cartographic-quality maps of mean annual precipitation for each of the 48 contiguous U.S. states
    NRCS Data Gateway

Go to these sites for more information, including full documentation and metadata, regarding PRISM climate map products developed by the NACSE at OSU, in conjunction with the NRCS-NWCC:

Other, related links (now or soon using PRISM climate map products):

Content Manager:

Jan Curtis

USDA-NRCS National Water and Climate Center
1201 NE Lloyd Blvd., Suite 802
Portland OR 97232-1274
(503)414-3017 Fax: (503)414-3101
email: jan.curtis@por.usda.gov