PROJC00189

• Contract/PO #: C150006
• Contractor Name: Palisade, Town of
• Contract Type: Loan
• Water District: 72
• County: Mesa
• Bill Number: HB 95-1155
• Loan Projects - Doc Type: Feasibility Study

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The pipeline system into and out of Cabin Reservoir involves several
pipelines, which are shown in Figure IV-6. Water from Cabin
Reservoir can be released only down the Cottonwood Creek pipeline.

The collection pipes have been installed intermittently over a 6O-year
period, and the process is on-going. All of the older pipeline is
cast iron or ductile iron pipe. Much of it uses lead joint pipes.
Much of the pipe is either on the surface or within two feet of the
surface. Pipelines installed within the last 20 years are usually PVC
pipe.

3.

Sqpply Pipelines

a. General. There are two pipelines which convey water from the
upper basins to the water treatment plant: the Cottonwood Creek
pipeline and the Rapid Creek pipeline (Figure IV.:t). The
Cottonwood Creek pipeline can carry water from almost all water
sources, including Cabin Reservoir and Kruzen Springs. Both pipes
operate under non-pressurized (atmospheric) flow regimes, and are
controlled by upstream valves; both usually flow continuously
(depending on water plant demand) with excess water diverted into
Rapid Creek at a blow-off valve.

b. Cottonwood (Creek Pipeline The Cottonwood Creek pipeline is
the focus of this report, i.e., is the pipeline recommended for
replacement.

The Cottonwood Creek pipeline presently extends from Cabin
Reservoir on its upper end to a connection with the main raw water
pipeline on Rapid Creek (the Wye). Below the Wye, a new 12 inch
main carries water to the water plant. Most of the pipeline is
located in the relatively narrow, rock walled canyon of Cottonwood
Creek. The pipeline conveys water from Cabin Reservoir, Kruzen
Springs and diversions on Cottonwood Creek. It supplies water for
both the Town of Palisade water plant and the Ute water treatment
plant.

The Cottonwood Creek pipeline from Cabin Reservoir to the Wye
consists of about 11,000 feet of 8 inch pipe, and about 11,000 feet
of 6 inch pipe, for a total length of approximately 22,000 feet (4.2
miles). The pipeline is approximately 50 years old and has
deteriorated over the years. It is mostly cast iron pipe with lead
joints. It has incurred numerous breaks in the past few years and
does not have adequate capacity to meet the Town's's future needs.
It operates primarily under open channel flow; there are several vent

IV-7