PROJ00335

• Contract/PO #: C153512
• Contractor Name: Summit County
• Water District: 64
• County: Logan
• Bill Number: XB 99-999
• Loan Projects - Doc Type: Feasibility Study

I
I
I

I

I

I

I

I

I

I

I

I
I
I
I
I
I

I
I

.

WBLA Inc.

October 30. 1989

Mr. Bruce Baumganner
Summit County Manager
P,O.Box 68
Breckenridge, CO 80424

Dear Bruce:

We are pleased to submit herewith our final repon on the Summit County Small Reservoir
Feasibility Study incorporating the review comments you provided in September.

The study evaluated the ability of current and proposed water exchanges to meet the existing
and ultimate water demands in the County over a range of hydrologic conditions, The study also
assessed the effects of these exchanges on instream flow conditions in stream reaches of importance for
their ecological and recreational value and on reservoir levels important to the County's recreation.
based economy.

Based on the study findings. we have concluded that existing water rights. facilities and
operating agreements, including the Summit County Agreement. are largely adequate to provide water
supplies for the ultimate demands of most County water users while. at the same time. meeting
negotiated instream flow objectives. Some minor reallocation of Summit County subordination water
among users above Dillon Reservoir should be considered and contractors for water from the Green
Mountain Reservoir Sales Pool should anticipate infrequent and relatively minor shortages in that
exchange source,

The study did identify the potential need for a new water storage facility in the upper Snake
River basin to eliminate some minor shorrages to future snowmaking water demands, to enhance
instream flow conditions in the Snake River, and to help alleviate water quality problems associated with
mine drainage. Existing storage facilities and water rights above Dillon Reservoir could. under
agreements with the entities owning them, be operated to alleviate nearly all other future water demand
shortfalls and instream flow deficiencies.

We believe that you will find the study report to be of lasting value for its detailed and
comprehensive examination of present and future water supply conditions in Summit County. In
addition, the hydrologic computer model of the basin, which was developed as pan of the study, will
suppon continued water resource planning activities in the County into the future.

This study has been a challenging and rewarding project for us, and we appreciate having had
the opportunity to undenake it. If we can be of any further assistance. please do not hesitate to contact
us.

Sincerely yours.

:lAj;;p _~

Charles M. Brendecke, PhD, PE
Project Manager

--

Consultants on Environment
and Natural ReBources:
Economics
Polley Analysis
Engineering

1002 Walnut, Suite 200
Boulder, Colorado 80302
[phone]
Telefax: [phone]