Snowpack and Precipitation Index Maps

The Basin Filled GIS Maps are being retired and will no longer be updated or available. The National Water and Climate Center now provides similar information in an updated format, linked below by state and content.

Quick Links

National Water and Climate Center Contact US SSWSF Program NWCC Apps Interactive Map Water Supply Forecasting Snow and Climate Data Reports

Snowpack and Precipitation Index Maps

West wide Snow Water Equivalent Index Water Year Precipitation Index

Alaska Snow Water Equivalent Index Water Year Precipitation Index

Arizona Snow Water Equivalent Index Water Year Precipitation Index

California Snow Water Equivalent Index Water Year Precipitation Index

Colorado Snow Water Equivalent Index Water Year Precipitation Index

Idaho Snow Water Equivalent Index Water Year Precipitation Index

Montana Snow Water Equivalent Index Water Year Precipitation Index

Nevada Snow Water Equivalent Index Water Year Precipitation Index

New Mexico Snow Water Equivalent Index Water Year Precipitation Index

Oregon Snow Water Equivalent Index Water Year Precipitation Index

Utah Snow Water Equivalent Index Water Year Precipitation Index

Washington Snow Water Equivalent Index Water Year Precipitation Index

Wyoming Snow Water Equivalent Index Water Year Precipitation Index