Normal

14.18 in  

Maximum  -  1978

23.05 in  

Minimum   -  1979

7.83 in  

Huntley Experiment Station, Montana 1961-1990

Mean Annual

45.2°F  

Daily Maximum  -  06/27/1919

107°F  

Daily Minimum   -  02/14/1936

-53°F  

Huntley Experiment Station, Montana 1911-1996

Growing Season

131 days  

Elevation of irrigable area

3,000 ft.  

Drainage area at Billings, Montana 10 miles upstream of diversion

11,795 mi²  

Annual Discharge:

   Maximum  -  1975

7,676,029 acre-ft 

   Minimum   -  1928

1,078,472 acre-ft 

   Average    -  1904-1997

5,032,596 acre-ft