WSP07869

• File Number: 8441.600
• Description: Colorado Big Thompson Project - Studies
• Basin: South Platte
• Water Division: 1
• Date: 12/19/1984
• Title: DRAFT - Green Mountain Reservoir Water Marketing Hydrology Study
• Water Supply Pro - Doc Type: Report/Study

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to the Stipulation, Judgment, and Decrees in the Consolidated Cases,
will take reasonable and prudent act ions to insure that water released
pursuant to paragraph 4 does not impair or diminish the availability

of

water

for

re lease

paragraph

hereof.

pursuant

to

2

8. In, order that no waste of water results from the unnecessary
storge thereof and in order to maximize the beneficial use of water
stored in Green Mountain Reservoir, the Regional Director. LMR. on a
yearly ba~is between April 1 and May 15 will detennine the anticipated
amount a~d uses of stored water reasonably necessary to meet the

objectives of paragraphs 2 and 4 hereof.

Any stored water in excess

thereof may be disposed of on a short-term basis by agreement as pro-
vided in paragraphs 4 and 6 hereof.
9. Re,venues resulting from any agreements provided for herein will
be credited to the operation and maintenance costs of Green Dam and
Reservoir~ to power replacement. and to appropriate project costs."

STUDY CRI~ERIA AND ASSUMPTIONS FOR GREEN MOUNTAIN RESERVOIR

The hydrq10gy model utilizes historical data which is modified by removing

,
historic~l Blue River operations and adding back in the simulated Blue River
operations plus including the impacts of water sales depletions on the

mainstem of the Colorado River.

The model considers the river basin

segment-by-segment. with all inflows. depletions, reservoir releases. etc.,

each tak~n as a net sum for the segment being considered. Changes in river

,
gains or ilosses, reservoir evaporation, etc., are considered negl)gib1e.

The hydr6logy model is a generalized system model as opposed to a complete
stream-by-stream model. simplifications and generalized asumptions were