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Last modified
9/26/2011 8:37:06 AM
Creation date
7/9/2008 12:55:03 PM
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Decision Support Systems
Title
SPDSS Task 5 - Key Municipal User, City of Fort Collins
Description
The City of Fort Collins has been identified as a key municipal user 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
2/5/2005
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 1 <br />Joe Wright Reservoir <br />Stage -Area -Capacity Curve <br />Elev. Area Capacity <br />(ft) (Acres) (Ac-Ft) <br />0 0 0 <br />3 4 6.6 <br />8 11 46 <br />13 18 124 <br />18 22 223 <br />23 27 353 <br />28 33 507 <br />33 38 687 <br />38 43 892 <br />43 48 1125 <br />48 55 1384 <br />53 63 1683 <br />Elev. Area Capacity <br />(ft) (Acres) (Ac-Ft) <br />58 70 2015 <br />63 78 2388 <br />68 87 2799 <br />73 94 3252 <br />78 103 3743 <br />83 111 4278 <br />88 120 4855 <br />93 129 5476 <br />98 139 6143 <br />103 148 6861 <br />105 152 7161 <br />Source: City of Fort Collins. <br />Notes: Dead storage of 687 ac-ftbelow gage height 33.0 ft (elevation 9893 feet). <br />NA -not available. <br />Joe Wright Reservoir is the only storage unit owned and operated by the City. A need for <br />additional storage capacity was identified to help meet the City's return flow obligations, provide <br />carry-over storage, and enhance the flexibility within its water resources system. The City <br />purchased Halligan Reservoir (6,428 ac-ft approximate storage capacity) from NPIC in 2003 to <br />address these needs. Under the terms of the purchase agreement, when the Halligan Reservoir <br />enlargement is completed, NPIC will retain ownership of the original capacity plus an additional <br />5,000 ac-ft of the enlargement. The next 12,000 ac-ft of storage water (stored under absolute and <br />conditional water rights) will go to Fort Collins with additional storage from the future <br />enlargement going to the Tri-Districts (Fort Collins-Loveland, North Weld County, and East <br />Larimer County), which serve residential needs adjacent to the City of Fort Collins service area. <br />Additional information related to Halligan Reservoir is presented in the Task SMemorandum <br />North Poudre Irrigation Company. <br />HydroBase Data <br />The monthly data over the 1950-2002 period of record pertaining to Joe Wright Reservoir and <br />the Michigan Ditch include the following: <br />End-of--Month Contents (see Figure 3) <br />• End-of--month contents missing for water years 1950, 1951, 1955, 1956, 1960, 1967- <br />1969, when owned by NPIC, and 1987, when owned by the City of Fort Collins. The <br />City provided the end-of--month storage contents for 1987. <br />City of Fort Collins Operating Memorandum.doc 5 of 20 January 5, 2005 <br />
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