PUB00047

• Year: 2000
• Title: SECWD/Arkansas Basin Preferred Storage Options Plan Final Draft Report
• Author: GEI Consultants, Inc
• Description: SECWD/Arkansas Basin Preferred Storage Options Plan Final Draft Report
• Publications - Doc Type: Water Resource Studies

Final Draft - Preferred Storage Options Plan
Southeastern Colorado Water Couservancy District
June 8, 2000

As indicated above, re-operation provides significant advantages in terms of low cost and
performance. While gravel lakes storage ranks high, the technology is not well suited for
regional water storage development. Enlargement of the planned Williams Creek Reservoir
would not provide any significant advantages due to its location. The Lake Meredith
enlargement has significant potential water quality and wetlands issues associated with its
development. Formulation of the PSOP focused on Fry-Ark Project re-operation with
enlargements of Pueblo Reservoir and Turquoise Lake to meet the total storage objective.

The preferred storage plan is summarized below:

Storage Implementation
Provided Cost 11) Timeframe
Phase 1 - Re-operation of the Fryingpan- 48,500 af $ 7,300,000 On-line by 2005
Arkansas Project
Phase 2 - New Storage Capacity 54.000 af $75.600.000 On-line by 2010 to
Stage 1 - Pueblo Reservoir 2013
Enlargement
Stage 2 - Turquoise Lake 19.600 af $14,500,000 On-line soon after
Enlargement 12) Stage 1
Total 122.100 af $97.400.000(2)

'" Cost is in current (January 2000) dollars and excludes any escalation for implementation in later years of the
planning horizon.
(2) Depending on SOD and enlargement reviews by the USSR. the Turquoise lake enlargement could precede the
Pueblo enlargement.

Re-operations

Storage in the re-operation space would be subject to the current Spill Priority 4 for the Project
and would be spilled before Winter Water in stofage (in amounts up to 70,000 af) is spilled.
Modeling studies indicate that re-operation will increase the amount of Winter Water spills by
a small amount on an average annual basis. A "spill credit" would be established to compensate
the Winter Water entities for potential spills. A portion of the DWMS space also would facilitate
better management of Winter Water. The spill credit would be paid from a District
DevelopmentlO&M fund that would be generated, in part, by a surcharge on the use of re-
operation space, as well as other revenue sources described later in this summary.

The costs of developing the re-operation space, estimated to be $7.3 million (in January 2000
dollars), would be shared by entities participating in re-operation. The cost for fe-operation is

m GEl Consultants, Inc.

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