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Minidoka Project - Main Page
Project Water Supply
Historic Conditions:
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Normal |
12.14 in |
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Maximum - 1983 |
20.33 in |
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Minimum - 1966 |
5.34 in |
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Pocatello, Idaho 1961-1990 |
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Mean Annual |
46.7 °F |
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Daily Maximum - 08/02/1969 |
104 °F |
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Daily Minimum - 02/01/1985 |
-33 °F |
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Pocatello, Idaho 1939-1996 |
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Growing Season |
155 days |
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Elevation of irrigable area |
4,225 - 5,000 ft |
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Drainage area near Heise, Idaho |
5,752 mi2 |
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Annual discharge: |
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Maximum - 1971 |
7,595,419 acre-ft |
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Minimum - 1934 |
2,877,098 acre-ft |
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Average - 1910-1996 |
5,017,431 acre-ft |
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Drainage area at Island Park Dam |
481 mi2 |
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Annual discharge: |
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Maximum - 1984 |
756,691 acre-ft |
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Minimum - 1934 |
274,394 acre-ft |
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Average - 1933-1996 |
441,547 acre-ft |
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Drainage area at Grassy Lake Dam |
10 mi2 |
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Estimated average annual runoff |
acre-ft |
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Drainage area at American Falls Dam |
13,580 mi2 |
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Annual inflow: |
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Maximum - 1971 |
7,361,561 acre-ft |
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Minimum - 1934 |
533,927 acre-ft |
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Average - 1910-1996 |
3,454,933 acre-ft |
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Drainage area at Milner Diversion Dam |
17,180 mi2 |
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Annual discharge |
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Maximum - 1984 |
6,791,683 acre-ft |
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Minimum - 1934 |
117,004 acre-ft |
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Average - 1909-1996 |
2,304,236 acre-ft |
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Streamflows: Snake River at Milner, Idaho (USGS)
Project Water Quality
American Falls
Blackfoot
Big Wood
Idaho Falls
Lake Walcott
Little Wood
Lower Henrys
Portneuf
Teton
Upper Henrys
Upper Snake - Rock
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