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Tualatin Project - Main Page
Project Water Supply
Historic Conditions:
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Normal |
37.57 in |
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Maximum - 1968 |
51.78 in |
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Minimum - 1985 |
23.86 in |
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Hillsboro, Oregon 1961-1990 |
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Mean Annual |
52.3 °F |
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Daily Maximum - 07/19/1956 |
108 °F |
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Daily Minimum - 01/31/1950 |
-10 °F |
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Hillsboro, Oregon 1948-1996 |
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Growing Season |
236 days |
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Elevation of irrigable area |
100 - 275 ft |
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Drainage area above Scoggins Dam |
39 mi2 |
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Annual discharge |
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Maximum - 1995 |
135,872 acre-ft |
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Minimum - 1985 |
45,760 acre-ft |
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Average - 1975-1996 |
77,081 acre-ft |
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Streamflows: Scoggins Creek below Henry Hagg Lake near Gaston, Oregon (USGS)
Project Water Quality
Tualatin
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