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Last modified
11/23/2009 10:39:52 AM
Creation date
10/4/2006 9:55:38 PM
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Template:
Floodplain Documents
County
Statewide
Title
Multi-Objective Flood Mitigation Plan for Vermillion River Basin-South Dakota
Date
1/1/1994
Prepared For
South Dakota
Prepared By
FEMA
Floodplain - Doc Type
Flood Mitigation/Flood Warning/Watershed Restoration
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<br /> <br /> <br />This solution could be implemented as <br />needed by water development districts and/or <br />soil conservation districts. <br />Funding could be sought frum the Us. Soil <br />O:mservationService and the us. AnnyOlrpsof <br />Engin=s' 205program. under wfuch r!Jeo,rps <br />pays SO% of study costs and up to 75% of con- <br />struction costs, iffeasJb1e based on Corps criteria. <br /> <br />County Commissions. Township Trustees, <br />or the Water Project Districts could take the <br />lead on this solution, which should be under- <br />taken immediately throughout the Basin. <br />funding could be provided by the state <br />for state struclures, by the V.s. Soil Con- <br />servation Service, or by the water develop- <br />mentdistricts. <br /> <br />'-.. <br /> <br />\ <br /> <br />I' 0 T E :-.; T I ^ L SOL U T ION 2-f <br />Channelize the river as needed to increase <br />carrying Cllpaeity. <br />This activity could be led by the waler <br />development districts or the soil conservation <br />districts throughout the Basin. <br />Funding could be provided under <br />the V.s. Army Corps of Engineers' 205 pro- <br />gram, under which the Corps pays 50% of <br />study costs and up to 75% of construction <br />costs, if feasible based on Corps criteria. <br /> <br />POTENTIAl. Sl>I.UTI()N 1-(; <br />Maintain jloodways bycll'lJring snags and other <br />obstructions and increasing the carrying Cllpac- <br />ity under low bridges. <br /> <br />. <br /> <br />ISSUE 3 <br /> <br />flOODING AROUND <br />LAKE THOMPSON <br /> <br />Lake Thompson is the largest natural <br />body of waler in the slale and is a <br />designated National Natural Landmark. In <br />1977, it covered 8,870 acres. By 1986 it had <br /> <br />grown to 18,000 acres, and in 1993 it covered <br />20,000 acres., resulting in considerable prop- <br />erty loss. The South D-.Ikota State Legislature <br />paid the property taxes on the inundated <br />land for one year, and actually purchased <br />3,000 acres of it The lake is functioning <br />naturally and is simply at a high-water stage <br />of its natural cycle, although it has been <br />estimated that 27,000 acres of wetlands have <br />been drained within the lakes 325,OOO-aae <br />watershed. A tremendous fishery has been <br />established, along with accompanying eco- <br />nomic d~lopment such as a bait shop and <br />lakeside resorts. The state is currently manag- <br />ing the lake under the Lake Thompson <br />Watershed Project. <br />
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