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Last modified
1/26/2010 12:29:08 PM
Creation date
10/11/2006 10:07:39 PM
Metadata
Fields
Template:
Water Supply Protection
File Number
8281.960
Description
Colorado River Studies and Investigations -- Lower Colorado Comprehensive Framework Study
Basin
Colorado Mainstem
Water Division
5
Date
6/1/1971
Title
Lower Colorado Region Comprehensive Framework Study -- Appendix VI - Land Resources and Use -- Appendix VIII - Watershed Management
Water Supply Pro - Doc Type
Report/Study
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<br /> <br /> <br />0. <br /> <br />I!o& <br />,-:~ <br />1llJ: <br />~ <br /> <br />-') <br /> <br />water impoundments and other features for fish and wildlife, for out- <br />door recreation, and other beneficial uses. <br /> <br />In the suggested program are 163 projects which include 230 im- <br />poundments, 730 miles of channel improvement, and 153 miles of levees. <br />About 11,500 square miles of drainage area would be controlled. <br /> <br />Total cost of the program by time frame is summarized for the <br />Region in the following tabulation. About 91 percent of the total <br />installation cost is federal. <br /> <br />Costs of the Suggested Upstream Structural Measures <br />for Flood Prevention <br /> <br />Costs <br />Measures 1966-1980 1981-2000 2001-2020 <br />Installation Cost ($1,000) <br />Levees and Channels 54,351 103,690 46,849 <br />Flood Control Reservoirs 98,337 57,666 31,890 <br />Total 152,688 161,356 78,739 <br />Annual OM&R Costs ($1,000) <br />Levees and Channels 151 249 188 <br />Floofr Control Reservoirs 445 269 190 <br />Total 596 518 378 <br /> <br />The program would be effective in reduction of upstream floodwater <br />and sediment damages. Average annual damages would be reduced from <br />about $228 million (without the program) in 2020 to about $55 million <br />with the suggested program. A high intenSity use area of about 1.7 <br />million acres would be provided protection. There would also be <br />opportunities for multiple use of the structural sites. <br /> <br />vii <br /> <br />I <br />, , <br />" I <br />, ' <br /> <br />;, : <br />, <br />\, ' <br />n <br />" <br />j <br />I' <br /> <br />1: <br /> <br />ii <br /> <br />I <br />,. <br />, <br />i <br />I <br />t.; <br />~t <br /> <br />
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