WSP05450

• File Number: 8220.114.I
• Description: Dolores Participating Project
• State: CO
• Basin: San Juan/Dolores
• Water Division: 7
• Date: 2/1/1995
• Author: USDOI-BOR
• Title: Draft Environmental Assessment - Proposal to Modify Operation of McPhee Reservoir and Acquire Additional Water for Fish and Wildlife Purposes
• Water Supply Pro - Doc Type: EIS

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4. ALTERNATIVE 4:

NO ACTION ALTERNATIVE - OPERATE
MCPHEE RESERVOIR BY 1977 DPR/FES
WATER RELEASE CRITERIA

Reclamation would operate McPhee Reservoir according to the ~977 DPR/FES
release criteria of 78, 5Q, or 20 cfs after expiration of the Interim
Operations Agreement (or any extensions). Flows in the Dolores River
would be maintained at 78 cfs during wet years, 50 cfs during normal
years, and 20 cfs during dry years (DPR pg.68-69) :

. A wet year is considered to begin on May ~ and extend for one year
if the end-of-April content of McPhee Reservoir exceeds 82% of the
active capacity.

. A normal year occurs when the end-of-April content is less than
82% of the active capacity and the March ~ prediction of the end-
of-June content was greater than 45% of the active capacity.

. A dry year would begin on March 1 and extend for one year if the
March ~ prediction of the content of McPhee Reservoir at the end
of June is less than, or equal to, 45% of the active capacity.

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