PROJ00273

• Contract/PO #: C153368
• Contractor Name: Cache LaPoudre Water Development Study
• Water District: 0
• County: Larimer
• Bill Number: SB 81-439
• Loan Projects - Doc Type: Feasibility Study

some 1,050 square miles in area, is primarily the water yielding area; while
the lower basin, some 800 square miles in area, is the area of water use.
Figure 1-1 is a map of the basin showing the upper and lower basins separated
by a dotted line which intersects the River at the mouth of the canyon.

The study examined such projects as would be located on the mainst.em of
the Cache la Poudre River or its tributaries (i.e., the North or South FOrks)
upstream from Fort Collins. Although segments of the mainstem and South Fork
are under study for possible inclusion in the national wild and scenic rivers
system, those segments were not excluded from consideration for reservoir
sites in this study. Likewise, the existence of designated wilderness areas
was not taken as a constraint on the siting of potential reservoirs or any
other potential project features.

D. S!'ODY MNllGJlIIBN'l'

Pursuant to the proper statutory procedures, the Colorado Water Conser-
vation Board selected Tudor Engineering Company to perform the study. Under
the general guidance of the Colorado Water Conservation Board's staff, Tudor
was responsible for carrying out all aspects of the study and for the
preparation of all necessary study documentation and reports. Final decisions
concerning the scope and conduct of the study, the evaluation criteria
employed at each stage of the study and the recommendations made at the
conclusion of the study were the responsibility of the Colorado Water
Conservation Board.

B. CXlRIlIla' OF DB S!'ODY

The study was conducted in two phases. In Phase I of the study, it was
originally intended that four to six preliminary alternative projects would be
selected for evaluation. Fourteen potential alternative projects were
identified, evaluated and then screened down to six preliminary alternative
projects. As a result of discussion with the Advisory Committee and input
received during public meetings, two additional preliminary alternative
projects were added for preliminary evaluation. These eight preliminary
alternative projects were analyzed and evaluated during Phase I of the
study. The results of Phase I were presented in the "Interim Report on the
Cache la Poudre Project Study" and an addendum to that report in July 1982.

In the original scope of work, it was intended that one or two alternative
projects would be selected for evaluation at reconnaissance level in Phase II
of the study. Following completion of Phase I, the decision of the Colorado
Water Conservation Board was to investigate four alternative projects during
Phase II of the study. The four selected alternative projects were analyzed
and evaluated during Phase II of the study. The results of both Phase I and
Phase II of the study are presented in this report.

The decision to investigate eight preliminary alternative projects instead
of four to six during Phase I and four alternative projects instead of one or
two during Phase II necessitated changes in the scope of work for the study.
The additional effort resulting from investigation of a greater number of

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