WSP07846

• File Number: 8240.200.48.D.3
• Description: Wolford Mountain
• State: CO
• Basin: Colorado Mainstem
• Water Division: 5
• Date: 1/13/1992
• Title: Wolford Mountain Reservoir Water Substitution - Record of Decision
• Water Supply Pro - Doc Type: Record of Decision

BUREAU OF LAND MANAGEMENT

Kremmling Resource Area
1116 Park Ave.
P. O. Box 68
KreTIllllling, Colorado 80459
[phone]

United States Department of the Interior

IN REPLY REFER To;
COC45805

RECEIVED
MAY 2 2 1998

May 21, 1998

Cotorado Water
Conservation Board

Colorado Water Conservation Board
Attn: Randy Seaholm
1313 Sherman St., 7th Floor
Denver, CO 80203

RE: Wolford Mountain Reservoir, Amended Record of Decision

Dear Mr. Seaholm:

The Kremmling Resource Area of the US Bureau of Land Management has amended the 1991
Record of Decision (ROD) for the Wolford Mountain Reservoir project, formerly referred to as the
Muddy Creek Reservoir project. The amended ROD documents the impacts and mitigation of
allowing the Colorado River Water Conservation District to increase the planned water storage
capacity of the reservoir by 6,000 acre-feet.

During construction, a design change was made to the reservoir spillway. The design change was
based on a recalculation of the Probable Maximum Flood event for the Muddy Creek basin.
Redesign of the spillway allows an additional 6,000 acre-feet of water storage within the reservoir.
The increased storage capacity is located entirely within the area analyzed in the 1991 Environmen-
tal Impact Statement. Therefore, no additional "in basin" impacts were identified.

It was determined by the US Fish & Wildlife Service that increased water storage will result in
water depletions which may have an effect on endangered fish species located downstream, out of
the Muddy Creek basin, in the Colorado River. As a result, the Colorado River Water Conservation
District has reached an agreement with the US Fish & Wildlife Service to dedicate the entire 6,000
acre-foot pool to the endangered fish recovery program.