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Last modified
1/26/2010 12:35:40 PM
Creation date
10/11/2006 11:00:50 PM
Metadata
Fields
Template:
Water Supply Protection
File Number
8449.750
Description
Tri-Lakes (Cherry Creek, Bear Creek, Chatfield)
State
CO
Basin
South Platte
Date
3/1/1996
Author
USACOE
Title
Water Supply Handbook "Storage Reallocation"
Water Supply Pro - Doc Type
Publication
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<br />Chapter 4 - Reallocations <br /> <br />4-3 <br /> <br />(1). Chanqe In Conservation Storaqe Demand or Need. <br />Originally authorized project purposes may no longer be required to <br />meet present needs or may be available for some new equal or higher <br />purpose. The opportunity then exists to modify or update the <br />authorized proj ect purposes through reallocation. For example, <br />changes in a reservoir's upstream conditions may provide an <br />opportunity to consider whether to extend the period that sediment <br />could be collected without encroachment on other storage, or allow <br />a portion of the storage initially reserved for sediment to be <br />reallocated to water supply. Another case is where water quality <br />storage originally provided to dilute pollutants may no longer be <br />needed if pollutants are now being removed before being discharged <br />into a stream or river. The most common example of reallocation of <br />conservation storage is when storage is reallocated from <br />hydropower. This has been accomplished several times when the <br />benefi ts of such reallocation are posi ti ve. In these cases, <br />however, it may be necessary to transfer some of the revenues <br />collected from the water supply user to the local power marketing <br />agency. If reallocation of hydropower storage is contemplated, the <br />Power Branch of the U. S. Army Corps of Engineers North Pac i f ic <br />Division (CENPD-PE-WM) should be contacted for assistance. <br /> <br />(2). Reallocation of Flood Control Space. Three conditions <br />which create an opportunity to reallocate flood control storage to <br />water supply storage are: <br /> <br />· Where reallocated flood control storage volumes are small <br />and have little or no affect on flood protection. If the affect is <br />large, Congressional action is required; <br />· Where the downstream floodplain has changed or supplemental <br />protection has been provided; and <br />· Where reservoirs have been designed to a maximum site <br />capacity which is larger than required by hydrologic analysis, <br />excess flood control storage may be available. <br /> <br />2. Partnerships. Opportunities for reallocation can also be <br />created through new partnerships with states and other water <br />agencies. The Memorandum of Understanding (MOU) between the State <br />of Kansas and the Department of the Army is the principal example. <br />This MOU was signed on 11 December 1985 and was an effort to <br />realize the highest level of benefits possible in existing Corps <br />regulated reservoirs in the state. It was also a unique <br />opportunity to: <br /> <br />· Solve the State's water supply problems regarding <br />availability and dependability; <br />· Increase the recovery of Federal investments occurring in <br />the State's water resources developments; <br />· Shift a greater portion of operation and maintenance costs <br />
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