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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 />improved maintenance. Existing local bud. <br />gets should provide funding. <br /> <br />I'OTENTIAI. SOI.UTION -1-10 <br />Jdt?ntify altmrative tTansporUltioll routes. {This <br />acrion would also address Damage tc Public <br />lnfrastrlldurt? from Flooding; see Solution 3-H. <br />page 25.J <br />This should be undertaken by the coun- <br />ty emergency management agencies in coop- <br />eration with the S.D. Department of Trans- <br />portation. Existing budgets should cover <br />the expenses. <br /> <br />155 U E 5 <br /> <br />SHORTAGE OF HYDROLOGIC <br />INFORMATION <br /> <br />Knowledge of the hydrologic conditions <br />in the Vermillion River Basin is essen- <br />tial to understanding the extent, frequency, <br /> <br />and risk of flooding, and for determin- <br />ing the design requirements and the poten- <br />tial for success of the possible solutions. <br />Many hydrologic studies and reports for <br />portions of the Basin have been done. At a <br />minimum, the following studies are essen- <br />tial: floodplain hydraulics, lake level analy- <br />sis. risk analysis. rainfall and flood frequency <br />anal}'5is, analysis of climatology. low-flow <br />hydrology, sediment transport (includ. <br />ing reservoir sedimentation), and channel <br />capacity analysis. <br /> <br />l'OTENTIAl SClI.UTJON 5-A <br />Identify existing studies and determine <br />what additional studies are nt?edt?d. {This <br />action would also addrrss LAck of Information <br />about Water Quality and Eroswn; see Solution <br />3-8, page 39.} <br />The S.D. Department of Environment <br />and Natural Resources' Division of Geo- <br /> <br />CD <br /> <br />logical Survey and Division of Water Rights <br />can help identify existing studies and deter- <br />mine additional research needs. The V.s. <br />Geological Survey and the V.s. Soil Con- <br />servation Service can assist. <br />Funding may be available under the V.s. <br />Army Corps of Engineers' special investiga- <br />tions program, through a Federal Emergency <br />Management Agency Aood Insurance Study, <br />the Federal Emergency Management Agency's <br />Limited Maintenance Map Program, the V.s. <br />Geological Survey, or the East Dakota Water <br />Development District in the Big Sioux Basin. <br />The investigation should begin within <br />one year, then be updated annually. <br />
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