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Map Products

Water Supply Forecasts

Note: Due to data system changes and resource constraints, basin-filled maps for Water Supply Forecasts are no longer being produced and are replaced by point maps.
 
Streamflow Forecast Map      
1st of Month
West-wide map % of Average
Regional maps % of Average by region:
Alaska
Arkansas, Colorado and Rio Grande Basins
Columbia Basin
Great Basin and California
Missouri Basin

Description:

Maps display the 50% exceedance forecast.  Maps are published January through June. For the 90%, 70%, 30% and 10% exceedance forecasts, please consult the Historical Basin Outlook Reports and the State Basin Outlook Reports.  For more information on how to interpret exceedance forecasts, check out our Streamflow Forecast Interpretation webpage.

Content Manager:

David Garen