BOARD00756

• Board Meeting Date: 9/22/2003
• Description: CF Section - Board Meeting Grand Mesa Reservoir Company
• Board Meetings - Doc Type: Memo

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STATE OF COLORADO

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Colorado Water Conservation Board

De\>artmenl of Natural Resources
1313 Sherman Street, Room 721
Denver, Colorado 80203
Phone: [phone]
FAX: [phone]
www.cwcb.state.co.us

Bill Owens
Governor

MEMORANDUM

TO:

Colorado Water Conservation Board Members

Greg E. Walcher
Executive Director

Rod Kuharich
CWCB Director

FROM:

John Van Sciver .:....--r-w~
Mike Serlet, P.E., Chief '
Water Supply Planning a~ nance Section.

DATE:

September 10, 2003

Dan McAuliffe

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SUBJECT: Agenda Item 5b., September 22-23,2003 Board Meeting
Grand Mesa Reservoir Company

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Introduction
The Grand Mesa Reservoir Company (GMRC) is applying for a loan in amount of $90,000 to
rehabilitate the outlet systems on the Grand Mesa Reservoirs #1 and #9. The estimated total cost
of the project is $100,000. Please see the attached project summary and map.

Backaround
The GMRC, located in Mesa County, owns and operates 6 reservoirs on the Grand Mesa with a
combined total capacity of 1,595 acre-feel. The reservoirs are used to store water for the benefit
of the shareholders. Water is released to Kannah Creek and then diverted below the mesa to a
500-acre service area.

Grand Mesa Reservoir #1 is a Class 2 structure with a dam height of 22 feet and a capacity of
559 acre-feel. The State Engineer has imposed a restriction of storage to 8 feet below the crest of
the spillway because of a failure of the outlet system, seepage, and undersized spillway. The
restriction reduces the allowable storage to about 260 acre-feel. This project addresses only the
problems with the outlet system and will not result in removal of the storage restriction.

Grand Mesa Reservoir #9 is a Class 3 structure with a dam height of 16 feet and a capacity of
153 acre-feel. The State Engineer has imposed a restriction of storage to 3.4 feet below the crest
of the spillway because of problems with the outlet system. The restriction reduces the allowable
storage to about 50 acre-feel. All dam safety issues associated with Grand Mesa Reservoir #9 will
be addressed as part of the construction project, so that the storage restriction can be removed.

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