SPDSS_Task5_KeyMuniUser_FtCollins

• 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

• The historic record indicates that operation of the reservoir was very minimal when
owned by NPIC, which essentially entailed an 815 ac-ft June fill followed by a complete
draw down of storage in July.
Figure 3
Joe Wright Reservoir

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Date
The monthly data available in HydroBase over the 1950-2002 period of record pertaining to the
Michigan Ditch can be found in the SPDSS Task 4 memorandum developed to Identify and
Fill/Resolve Conflicting Records for Key Transmountain Diversions.
2) Fort Collins Pipeline (Structure ID 0300906)
The City takes delivery of water from the river system at the Fort Collins Pipeline diversion
structure, located on the south side of the Cache la Poudre River below NPIC's North Poudre
Supply Canal and above the confluence with the North Fork Cache la Poudre River (see Figure
1). This diversion structure was originally constructed in the early-1900s in conjunction with the
City's Water Treatment Plant No. 1, which was located in the same area. Transmission lines
extended approximately 12 miles from the plant into Fort Collins. In 1966, the City constructed a
second treatment plant at the foot of Soldier Canyon Dam on Horsetooth Reservoir (see Figure
3). The treatment plant at Horsetooth Reservoir, now referred to as the Fort Collins Water
Treatment Facility (WTF), is also used to treat transbasin water from the C-BT and Windy Gap
projects for the Fort Collins service area. Due to the condition of the Water Treatment Plant No.
1, it was shut down in 1987 and the transmission lines were converted to raw water lines to
City of Fort Collins Operating Memorandum.doc 6 of 20 January 5, 2005