WSP12593

• File Number: 8282.500.20
• Description: CO River Operations-Accounting - Long Range Reservoir Operation-Annual Operations Studies
• State: CO
• Basin: Colorado Mainstem
• Water Division: 5
• Date: 10/3/1984
• Author: Unknown
• Title: 1984 Colorado River Operation Study Report - Preliminary and Reviewed Draft - 10-03-84
• Water Supply Pro - Doc Type: Report/Study

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The sum of^releases must equal or exceed 8.23 million acre-feet per year.

During the last 7 months of the year, the releases are dictated mainly
by the goal of balancing storage space between Lake Mead and Lake

Powell, subject, of course, to the restrictions just noted.

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The simplified seasonal model was run using the sam~~hydrologic tra-
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ces as were used in theACRSS analyses. Results were a~yzed to deter-

mine which strategies (if any) would produce unacceptable results with

respect to operational constraints on the system. Several parameters

were evaluated on a strategy-by-strategy basis. These included monthly

and annual releases from Lakes Powell and Mead, end of study contents

for Lakes Powell and Mead, power generation, and diversions by CAP and

MWD.

Results were favorable, generally indicating that operating strategies

in the range, of 0.70 to 0.99 coul d be run wi thout encounteri ng seri ou~
problems in the river system and with generally more favorable results

than observed in the base case.

3.5 Description of Changes in CRSS Logic

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In order to incorporate the capability for considering alternative
strategies, significant changes in the CRSS code were necessary.

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The revised code includes code to simulate the alternative strategies as
described earlier.ft;t~me minor refinement~~~~de as a result of experi-
ence in running the ANNSIM and MONSIM models and general discussions.

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