WSP00691

• File Number: 8142.700
• Description: Trinidad Project - Annual Operating Plans and Reports
• State: CO
• Basin: Arkansas
• Water Division: 2
• Date: 12/1/1996
• Author: US DoI BoR
• Title: Review of Operating Principles and Project Operations Final Report
• Water Supply Pro - Doc Type: Operating Principles/Plan

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B. The storage of winter water under the direct flow rights in any of the irrigation

capacity is allowed by the operating principles and the operating principles should be amended to

clarify this issue.

C. The amendment to the operating principles for enlargement, initial filling and

maintaining the enlarged permanent fishery pool should be incoI1Jorated into the operating

principles. After determination of water conveyance losses in the Purgatoire River, the operating

principles should be amended to provide a volume for volume exchange at the mouth of the

Purgatoire River considering conveyance losses in the Arkansas and Purgatoire Rivers. The

amendment should be modified to change the point of reference for non-interference of flow from

useable Stateline flow to inflow into John Martin Reservoir.

D. The operating principles provide for a stock water release rate up to the rate of inflow

to Trinidad Reservoir and it is accounted for as a pass through and not as stored water. The

stock water allowance includes river gains from Trinidad Dam to the Trinidad gauge and the

volumetric allowance of 1500 acre feet measured at the Trinidad gauge. Since the Hoehne Ditch

stockwater allowance has been terminated and transferred to the District water supply, the

operating principles should be modified, if necessary, to allow a rate of release up to the rate of

inflow to Trinidad Reservoir without counting as stored water and the volume limit should be

reduced to 1200 acre feet, measured at the Trinidad gauge.

E. The operating principles should be amended to reduce the total irrigable acreage to

19499 acres rather than the 19439 acres recommended in the 1988 report considering the

ownership of water rights and lands and the contracts between the District and the individual

ditches. Land classification requirements should be deleted and the irrigable lands should be

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