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Drainage areas in the Big Sioux River basin in eastern South Dakota
Frank D. Amundson, Neil C. Koch
1985, Open-File Report 85-348
The Big Sioux River basin of eastern South Dakota contains an important surface water supply and a sizeable aquifer system of major importance to the economy of South Dakota. The aquifers are complex, consisting of many small aquifers that are hydrologically associated with several large aquifers and the Big Sioux...
Spirit Lake dam-failure flood routing assessment
D. L. Kresch
1985, Open-File Report 82-770
Potential clear-water floodflows resulting from uncontrolled breaching by Spirit Lake of a debris dam deposited by the May 18 , 1980, eruption of Mount St. Helens, Washington, were evaluated. U.S. Geological Survey dam-break model K-634 was utilized, first to compute clear-water flood hydrographs for various hypothetical breach scenarios, and then...