PROJ00259

• Contract/PO #: C153424
• Contractor Name: Colorado River Water Conservation District
• Water District: 0
• Bill Number: XB 99-999
• Loan Projects - Doc Type: Feasibility Study

I

I

Uon of the annual flows relative to the distribution of the annual
demand. A storage reservoir is the obvious solution to this problem.
The East Divide Creek basin and Mamm Creek basin are similar to the
West Divide Creek basin in that their existing irrigated areas are
short of water in most years. The East Divide Creek basin has a shor-
tage of about 1.75 ac-ft per acre. The Mamm Creek system has a simi-
lar shortage; however, the Mamm Creek system includes Hunter Mesa,
which is presently lmirrigated. Hunter Mesa, an area of about 4,700
acres, is presently used to raise dry-land wheat. Most of the Mesa is
class 1 land which would be suitable for irrigation.

I

I

I

B. Study Objectives

I

This study is intended to define project configurations which are
optimum under certain conditions. Several limitations on the scope of
the study were introduced. First, pumping of water from the Colorado
River was not to be included. Second, the reservoir sites were
limited to:

I

I

Kendig (2 sites)
Dry Hollow
Mamm Creek (2 sites)

Beaver Creek (2 sites)
East Divide Creek
Haystack

Buzzard Creek
Owens Creek
Yank Creek

I

The objective is to redefine a range of projects for which costs
have been determined. The existing project data, developed over the
last 50 years, should be used to the maximum possible extent.

I

I

C. Study Process

I

This study began with the development of a request for proposals
(RFP) from qualified engineering firms. The Colorado Water
Conservation Board (CWCB), the Colorado River Water Conservation
District (CRWCD) and the West Divide Water Conservancy District
(WOWCD) developed a scope-of-work which was incorporated into the RFP.
Several engineering firms responded with proposals which contributed
additional detail to the scope-of-work. After interviews Hydro-Triad,
Ltd. was chosen to perform the study. A draft contract was developed
and discussed; this draft contract contained further definition of the
scope-of-work. The study process was finally established wi th the
signing of the contract between Hydro-Triad, Ltd. and the CRWCD.

I

I

I

The study process began with the compilation of existing litera-
ture and data. The West Divide Project has been examined by the USBR
and others since the 1930's. A large body of data has been developed
as part of these studies. Other data, such as recent USGS stream flow

I

I

II-2

I
I