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The Dalles Project Water Data

The Dalles Project  -  Main Page

Project Water Supply

Normal

14.01 in  

Maximum  -  1983

22.62 in  

Minimum   -  1976

7.62 in  

The Dalles, Oregon 1961-1990

  

      Temperature

Mean Annual

54.7 °F  

Daily Maximum  -  07/20/1956

112 °F  

Daily Minimum   -  02/03/1950

-21 °F  

The Dalles, Oregon 1948-1996

  

Growing Season

248 days  

Elevation of irrigable area

200 - 1,200 ft  

      Columbia River

Drainage area at The Dalles, Oregon

237,000 mi2  

Annual discharge:

  

Maximum  -  1894

223,779,600 acre-ft  

Minimum   -  1977

84,674,700 acre-ft  

Average    -  1878-1996

138,175,105 acre-ft  

Project Water Quality
 

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