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Lyman Project - Main Page
Project Water Supply
Historic Conditions:
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Normal |
11.25 in |
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Maximum - 1983 |
22.40 in |
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Minimum - 1988 |
4.26 in |
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Evanston, Wyoming 1961-1990 |
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Mean Annual |
40 °F |
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Daily Maximum - 07/07/1985 |
99 °F |
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Daily Minimum - 02/12/1905 |
-38 °F |
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Evanston, Wyoming 1890-1996 |
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Growing Season |
92 days |
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Elevation of irrigable area |
6,500-8,000 ft |
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Drainage area at Meeks Cabin Dam |
156 mi2 |
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Annual discharge |
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Maximum - 1983 |
203,600 acre-ft |
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Minimum - 1977 |
59,900 acre-ft |
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Average - 1950-1997 |
119,100 acre-ft |
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Streamflows: Blacks Fork near Millburne, Wyoming (USGS)
East Fork of Smith Fork
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Drainage area at Stateline Dam |
52 mi2 |
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Annual discharge |
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Maximum - 1965 |
64,380 acre-ft |
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Minimum - 1954 |
18,350 acre-ft |
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Average - 1940-1971 |
34,150 acre-ft |
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Streamflows: East Fork of Smith Fork near Robertson, Wyoming (USGS)
Project Water Quality
Black´s Fork
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