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<br />Fortifioation Creek Report
<br />Reviead 21 March 1949
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<br />However, the safe yield that might result from a reservoir to store run-
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<br />off from this basin alone probably would not provide benefits sufficient
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<br />to justify construction of such a structure and of the required works
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<br />appurtenant to an irrigation system. Consideration has been given in
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<br />reports by other agencies to supplementing the safe yield of a reservoir
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<br />on Fortification Creek by transbasin divsrsion frcm adjaosnt strsoms.
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<br />Detailed study was not given to such 8 plan in the preparation of this
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<br />interim survey report because Buch a study would require consideration of
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<br />the water resources of an area not covefed in the authority for this
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<br />report. Run-off from Fortification Creek might be adequate, with storage,
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<br />for development of a small amount of firm hydroelectrio power: however.
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<br />the cost of storage facilities and of'a power plant would be far in excess
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<br />of the benefits that would aocrue,
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<br />FLOODS
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<br />2g. Floods of record.__Historical references to floods on Fortifica-
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<br />tion Creek extend back to 1879. but reoords of mean daily flows are
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<br />available for onl~ the period's 1905-6, 1909-18, and 194}-48. The earliest
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<br />large flood for which information is considered adequate for use in
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<br />making a reasonable estimate of flood severity occurred in 1897. Large
<br />floods occurring subsequently includsd those of 1904, 1911, 1914, 1916,
<br />1917, 1921, and 1947. Damaging floods of smaller magnitude ocourred in
<br />1896, 1902, 1906, 1922, 1923, and 1926. Numeroue minor floods havs caussd
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<br />slight damage in exposed areas during the period of record.
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<br />29. During the l5-year period of stream-flow measurements for Fortlfi_
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<br />cation Cresk at Craig (at Highw,,", US 40 bridge), the four highest recorded
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<br />msan daily flows were 75C, 711, 706, and 691 oubic feet per seoond, which
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<br />occurred in 1914, 1917, 1916, and 1947, respeotively. The stream-gsging
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<br />station at Craig measures only the mean daily flows in the channel; the
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<br />measurements of the peak discharges would have been larger if the overflow
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