WSP08124

• File Number: 8220.106
• Description: Animas-La Plata
• State: CO
• Basin: San Juan/Dolores
• Water Division: 7
• Date: 10/1/1996
• Title: Animas-La Plata Project Summary Information
• Water Supply Pro - Doc Type: Project Overview

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The pipeline would have a capacity of 4 cfs and would extend approximately 15,000 feet from
Ridges Basin Pumping Plant to a high point in the La Plata rural area. Future treatment,
storage, and distribution systems for the water would be the responsibility of the water users.

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Ridges Basin Pumping Plant would also deliver water to supply rural subdivisions west of
Durango, Raw Project water would most likely be delivered to a central water treatment
plant and then pumped to high points northwest of Ridges Basin Reservoir via Shenandoah
M&I Pipeline. Future treatment, storage, and distribution systems for the water would be the
responsibility of the water users, and the system may require additional NEP A compliance
prior to construction.

Phase 1, Stage A - Operation

Operation of Phase I, Stage A as an independent facility assumes:

· An annual average depletion of57,100 acre-feet per year of water from the San
Juan River system is the maximum allowable under the 1991 and 1996 RP As for
the Project.

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· A total average annual diversion of80,100 acre-feet would be required to fully
satisfY the M&I demand. The Project proponents have agreed that the supply
would be used for M&I, although Phase I, Stage A would not fully satisfY the
requirements of the Settlement Act.

· A full average annual diversion of 80, 1 00 acre-feet with the associated return
flows of26,300 acre-feet equates to an annual 53,800-acre-feet depletion. In
addition, a depletion of3,300 acre-feet would occur as a result of evaporation
from Ridges Basin Reservoir, resulting in an average annual 57,100 acre-feet
allowable depletion to the San Juan River.

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