PROJ00001

• Contract/PO #: C153168
• Contractor Name: Delta, City of
• Contract Type: Loan
• Water District: 40
• County: Delta
• Bill Number: SB 77-35
• Loan Projects - Doc Type: Feasibility Study

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General

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The existing water system of the City of Delta consists
of several elements and include:

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1.

raw water reservoirs,

2. raw water transmission pipelines,

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3.

raw water control reservoirs,

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4.

chemical treatment works,

5.

filtration plant facilities,

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6.

distribution system, and

7. treated water reservoirs.

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Raw water reservoirs were described in the previous section.
Each of the remaining elements as they exist in the present system
will be described in detail in this section. The information is
intended to provide all interested persons with a thorough background
on the operation of the water system including capacities of the
system and costs of operation.

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Transmission Pipelines

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The raw water transmission pipelines for the City of Delta
begin at the headwaters of Doughspoon Creek, and Dirty George Creek.
The collection system consists of 6-inch through 12-inch pipelines
and has a total length of approximately 23 miles. Most of the system
is buried at a shallow depth or lies directly on the ground. Some
sections of the pipeline are even suspended from trees by cables. The
collection system terminates in the center of the Delta Control
Reservoir ahead of the chemical treatment works.

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Three main branches compose the collection system. These
are the original Delta Pipeline, the Doughspoon Aqueduct, and the
Dirty George Aqueduct. The original Delta Pipeline was a 6-inch clay
tile pipeline beginning at the headwaters of West Doughspoon Creek.
This line was built around 1903 and extends southeasterly approxi-
mately 6.4 miles along Dry Gulch to its junction with the main arm of
the collection system about 1/2 mile north of the Delta Control
Reservoir. A branch pipeline approximately 1/4 mile long at the upper
end of the original Delta Pipeline connects the system to a spring.
The main pipeline begins at the outlet works of the Burnett Reservoir
which is fed by seepage flows from the Doughspoon Reservoir located
on the hill above. At one time, a tunnel approximately 554 feet long
was used to collect water from the hillside to supply the pipeline.
The tunnel, in essence, acted as a horizontal well.

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