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<br />000025
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<br />SUPPLEMENTARY PERTINENT DATA (Cont'd)
<br />
<br />Item
<br />
<br />Description or Quantity & Units
<br />
<br />Hydrology (Cont'd)
<br />
<br />One inch runoff equals ac-ft.
<br />
<br />One inch of runoff from the 4,670 square
<br />
<br />miles above the dam equal 249,067 ac-ft.
<br />
<br />Storm types
<br />
<br />Storms consist mainly of two kinds:
<br />
<br />Those associated with frontal action;
<br />
<br />and airmass thunderstorms.
<br />
<br />Flood season's
<br />
<br />Spring, Summer and early Fall.
<br />
<br />Low Flow Season
<br />
<br />Winter
<br />
<br />Minimum daily flow
<br />Date
<br />
<br />The minimum daily flow of 1 c.f.s.
<br />
<br />occurred 5 April 1935.
<br />
<br />Minimum monthly flow
<br />Date
<br />
<br />The minimum monthly flow of 3,070
<br />
<br />occurred in March 1935.
<br />
<br />Minimum annual flow
<br />year
<br />
<br />The minimum annual flow of 164,600
<br />
<br />ac-ft. occurred in WY 1934.
<br />
<br />Average annual flow
<br />
<br />513,700 Acre-Feet (Record: 1886-87,
<br />
<br />1804-1973)
<br />
<br />Maximum annual flow
<br />year
<br />
<br />The maximum annual flow of 980,100
<br />
<br />ac-ft. occurred in WY 1957.
<br />
<br />A-6
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