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Last modified
9/26/2011 8:37:05 AM
Creation date
7/9/2008 12:31:01 PM
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Decision Support Systems
Title
SPDSS Task 5 - Key Structure, FRICO-Marshall Lake Division
Description
The FRICO–Marshall Lake Division has been identified as a key structure for the South Platte Decision Support System (SPDSS) consumptive use and surface water modeling efforts. The purpose of this Task 5 memorandum is to document physical, legal, and operational aspects of those key structures identified.
Decision Support - Doc Type
Task Memorandum
Date
3/3/2005
DSS Category
Surface Water
DSS
South Platte
Basin
South Platte
Contract/PO #
C153954
Grant Type
Non-Reimbursable
Bill Number
SB01-157, HB02-1152, SB03-110, HB04-1221, SB05-084, HB06-1313, SB07-122
Prepared By
Leonard Rice Engineering
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12 <br />000 <br /> , <br /> 10,000 <br />a~ <br />a~ <br />m <br />8 <br />000 <br />~ , <br />c~ <br />a~ <br /> <br />c~ <br />L <br /> 6 <br />000 <br /> , <br /> <br /> <br />c <br />0 <br />~ 4 <br />000 <br />'T' , <br />0 <br /> <br />c <br />w <br /> 2 <br />000 <br /> , <br /> O N ~ co ao O N ~ co ao O N ~ co ao O N ~ co ao O N ~ co ao O N <br /> ~ ~ ~ ~ ~ CO CO CO CO CO I~ ti ti ti ti 00 00 00 00 00 O O O O O O O <br /> C C C C C C C C C C C C C C C C C C C C C C C C C C C <br /> fB fB (B fB fB fB (B (B fB fB fB (B (B fB fB fB (B fB fB fB (B (B fB fB fB (B (B <br /> <br />Figure 2: Marshall Lake Storage Records <br />Diversion coding of the historical diversion records indicates that water is diverted into <br />Marshall Lake through the Community Ditch for storage in the reservoir. Historical <br />reservoir release records are sparse, however when available, indicate that water is <br />released to Community Ditch in the earlier years and then the Louisville Pipeline in the <br />later years. <br />Marshall Lake Outlet: In the early 1980's, the City of Louisville installed a new Marshall Lake <br />outlet works and 60-inch pipeline with a rated capacity of 116 cfs (this includes <br />Louisville's capacity of 31 cfs). All water released from Marshall Lake is conveyed <br />through the outlet pipeline, which carries the water past the Marshall Landfill. The City <br />of Louisville's portion of the releases connects to the Louisville Pipeline and continues to <br />Louisville for municipal uses. The FRICO-Marshall portion of the releases is conveyed <br />to shareholders through the Lower Community Ditch. <br />Releases to the pipeline are measured using a Cipoletti weir at the reservoir outlet. <br />Conveyance losses through the pipeline are negligible. Release information stored in <br />HydroBase is minimal. <br />FRICO_Marshall.doc 7 of 12 <br />
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