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Columbia Basin Water Supply

Data Courtesy of Northwest River Forecast Center, NOAA

The DART Columbia Basin "Water Supply" Summary (updated monthly) presents current monthly water supply with historical and 30 year normal at select sites in the Columbia Basin: Columbia River at International Boundary, Priest Rapids, Dworshak, Lower Granite, The Dalles, and Bonneville. Based on April-September rankings at each site, the wettest and driest 5 years are highlighted. For complete coverage, please visit Water Supply Forecasts, Northwest River Forecast Center, NOAA.

Upper Columbia Basin

Water Supply Boundary Current, Historical, 5 Wettest Years, 5 Driest Years, 30 Year Normal
Water Supply Boundary Current, Historical, 5 Wettest Years, 5 Driest Years, 30 Year Normal
Water Supply Priest Rapids Current, Historical, 5 Wettest Years, 5 Driest Years, 30 Year Normal
Water Supply Priest Rapids Current, Historical, 5 Wettest Years, 5 Driest Years, 30 Year Normal

Snake Basin

Water Supply Dworshak Current, Historical, 5 Wettest Years, 5 Driest Years, 30 Year Normal
Water Supply Dworshak Current, Historical, 5 Wettest Years, 5 Driest Years, 30 Year Normal
Water Supply Lower Granite Current, Historical, 5 Wettest Years, 5 Driest Years, 30 Year Normal
Water Supply Lower Granite Current, Historical, 5 Wettest Years, 5 Driest Years, 30 Year Normal

Mainstem Columbia

Water Supply The Dalles Current, Historical, 5 Wettest Years, 5 Driest Years, 30 Year Normal
Water Supply The Dalles Current, Historical, 5 Wettest Years, 5 Driest Years, 30 Year Normal
Water Supply Bonneville Current, Historical, 5 Wettest Years, 5 Driest Years, 30 Year Normal
Water Supply Bonneville Current, Historical, 5 Wettest Years, 5 Driest Years, 30 Year Normal

Last Update: June 02 2024 09:03:01.