BOARD01427

• Board Meeting Date: 1/27/1999
• Description: CF Section - Non-Reimbursable Projects and Investigations - Southeastern Colorado WCD - Phase II Water and Storage Needs Assessment
• Board Meetings - Doc Type: Memo

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Water and Storage Needs Assessment
SECWCD/Assessment Enterprise
December 10,1998

The storage need identified above is for the high growth forecast, and could be less
under the base forecast.

Additional storage capacity could benefit non-District entities who have water
interests in the Arkansas Basin, as well as District entities who desire more storage
to enhance water management and provide drought protection. Additional East
Slope storage also may enable additional Fry-Ark Project imports to be made.
Currently, Fry-Ark imports can be curtailed due to unavailable East Slope storage
capacity. These "foregone" diversions from the West Slope have totaled
approximately 200,000 af since the project began operation.

8.

The 31 storage/water management options were subjected to a qualitative
evaluation in order to develop a list of 14 options for more-detailed reyiew. These
14 options then were evaluated using a decision analysis framework to identify 8
options that appear to have better overall performance in terms of cost, operational
effectiveness, and environmental/social factors. The evaluation process is
preliminary in nature and is not intended to be fully compliant with NEP A
guidelines. However, the basic structure of the process is designed to be expanded
and refined in subsequent more detailed levels of study and evaluation of
alternatives. The eight alternatives are summarized in the following table in the
order of their priority ranking in the alternatives analysis:

S.t~!:!Ig4!;.QP.t1o_n
lake Meredith Enlargement 80,000
Fry-Ark Project Reoperation 90,000~)
Turquoise lake Enlargement 9,000
Clear Creek Reservoir (New) 100,000
Tennessee Creek Reservoir 28,000
Pueblo Reservoir Enlargement 75,000
Williams Creek Reservoir 16,000
Gravel lakes Storage 13,000

(I)
Estimated maximum volume of storage based on initial configurations.
(2) Estimated potential volume available without consideration afEast Slope decrees.
Volume may not be available in all years.

97411\FinatI\TEXT-A.WPD

~ GEl Consultants, Inc.

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