SPDSS_Task5_KeyStructure_BobCreekDitch

• Title: SPDSS Task 5 - Key Structure, Bob Creek Ditch
• Description: The Bob Creek Ditch 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: 7/15/2005
• 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

573. In 1998, the City of Greeley began claiming water again through Bob Creek Ditch, after
modifications were made to the Ditch.
Flow through Bob Creek Ditch starts in the middle of May and reaches its usual high point early
in June. Little water is available to the Ditch in any season after the middle of July except after a
rain. Bob Creek Ditch does not interact with any other diversions or storage facilities.
For the past few years, the City of Greeley has been in discussions with the Forest Service
concerning the quality of water diverted in Bob Creek Ditch. The Roaring Fork Creek is habitat
to the Greenback Cutthroat Trout. As a result, diversions through Bob Creek Ditch between
1998 and 2001 utilized only the last 0.5 miles of the ditch and diverted water back to Nun Creek.
The spring of 2002 was the first time the full ditch was utilized and water was diverted into
Roaring Fork Creek. The City of Greeley expects to continue full operation of Bob Creek Ditch
as water becomes available.
Where to find more information
^ Specifics relating to the data collection and filling processes used in the determination of
the best source of data axe presented in the SPDSS Task 4 Memorandum -Identify and
Fill/Resolve Conflicting Records for Key Transmountain Diversion Structures.
^ Additional information on ditch and reservoir operations within Water District 3 is
presented in the Water District 3 Meeting Notes prepared for SPDSS Task 3 -Identify
Key Diversion Structures.
^ Additional information regarding the operating practices for the City of Greeley is
presented in the City of Greeley System Memorandum prepared for the SPDSS Task 5 -
COMMENTS AND CONCERNS
None.
REFERENCES
1. City of Greeley. Telephone conversation with Randy Gustafson, Water Supply Supervisor.
2. Colorado Water Resources & Power Development Authority. 1987. Cache la Poudre Basin
Study.
3. Department of Civil Engineering Colorado State University Fort Collins, Colorado. 1996.
Input-Output Modeling of the Cache La Poudre Water System.
4. George Varra. Water Commissioner Division 1, District 3. Phone: [phone]
5. Water Right Data. Division of Water Resources. http://water.state.co.us/
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