PROJ00507

• Contract/PO #: C153513
• Contractor Name: Ute Mountain Ute Tribe
• Water District: 0
• County: Montezuma
• Bill Number: XB 99-999
• Loan Projects - Doc Type: Feasibility Study

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Table 3.5 presents the average driving head available to meet the design flow
needs.

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Table 3.5
Elevations and Oesign Heads
Cortez to Towaoc Storage Tanks
Half-Full Conditions
Average Average Proposed Average
Cortez 01 d Concrete Head New TO\~aoc Head Uphill Head
Tank W.S. Towaoc Tank Available Tank W.S. Available Tank Available
Elevation W.S. E1ev. (feetl E1 evati on (feetl \~.S. E1ev. (feet)
6,398 5,995 403 6,095 303 6,240 158

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If such tanks were made operational at the same time the new pipeline was
completed, there would be a major imbalance in the number of people served by
each. It wou1 d be the long-term obj ecti ve to ba1 ance the number of users
served by each tank to be in general prooortion to the storage volume in each
tank. The functi onal storage 1 eve1 s wi thi n each tank coul d be reduced in the
early years and then raised as user demand increases over the years.

As outlined previously, the proposed upper tank or the lower tank not now in
use would not necessarily have to be activated initially. However, the
hydraulic design of the pipeline should be based on tanks at all three
locations being placed into service.

If operated at design flow rates previously outlined, the pipeline and storage
system should be able to provide the lO-day peak inflow volumes to the tanks,
as listed in Table 3.7. The general mode of operation is planned to have the
line fully open or closed.

3-12

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