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Last modified
9/26/2011 8:52:20 AM
Creation date
7/10/2008 9:22:14 AM
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Decision Support Systems
Title
SPDSS Task 5 - Key Structure, Water Supply and Storage Company
Description
The Water Supply and Storage Company 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
3/5/2005
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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Table 2 <br />Chambers Lake <br />Gage Height -Area -Capacity' <br />Gage Height <br />(ft) Area <br />(acres) Cumulative <br />Ca aci (ac-ft) <br />10 NAb~ 1,035 <br />20 NA 2,390 <br />30 NA 4,443 <br />40 NA 6,919 <br />45 NA 8,267 <br />47 281 8,824 <br />Data acquired from Water District 3 Water Commissioner. <br />bi NA =not available. <br />HydroBase Data: Historical end-of--month storage records are available for Chambers Lake in <br />HydroBase under Structure ID 0303679 for most of the 1950 through 2002 SPDSS study <br />period. Diversion records for inflow to and releases from Chambers Lake are available in <br />HydroBase under the same Structure ID for 1973 through 2002. <br />Review of the historical end-of--month storage indicates that Chambers Lake fills to <br />capacity in most years; however, from the late-1980's to early-1990's and in 2002, <br />Chambers Lake did not fill to its available capacity. <br />Diversion coding indicates that water diverted into Chambers Lake regularly includes <br />natural streamflow, transbasin diversions associated with Skyline Ditch, Cameron Pass <br />Ditch, Grand River Ditch, Laramie Poudre Tunnel, Horsetooth Reservoir, and Windy <br />Gap Project, and exchanges with Reservoir Number 8, Fossil Creek Reservoir, <br />Horsetooth Reservoir, and Long Draw Reservoir. <br />Water released from Chambers Lake <br />regularly includes water for augmentation <br />or substitute water supply plans and <br />releases for the WSSC System. Releases <br />for the WSSC System are primarily directed <br />for use in the Larimer County Canal. <br />However, through established agreements, <br />water released for the WSSC System has <br />been used at Barnes Meadow Reservoir, <br />Greeley Filters Plant, Fort Collins Pipeline, <br />North Poudre Supply Canal, and the <br />Poudre Valley Canal. <br />Chambers Lake Dam c.1905 <br />Flood Control/Hydropower Operations: Chambers Lake is not managed for flood control or <br />hydropower operations. <br />WaterSupply&Storage Memo.doc <br />9 of 21 <br />
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