Prehearing Statement of Colorado River Water Conservation District

• File Number: 8230.51A2
• Description: Objectors' Prehearing Statement
• State: CO
• Basin: Colorado Mainstem
• Water Division: 5
• Date: 6/17/2005
• Author: Peter C. Fleming, Steven M. Mathis, William C. Wallace, Taylor Hawes, Boyle Engineering Corporation
• Title: Prehearing Statement of Colorado River Water Conservation District
• Water Supply Pro - Doc Type: Court Documents

Executive Summar
Apri123, 2003
Pafze ii
and Ten-Mile Creek near Copper Mountain. The key to developing these critical supplies
is cooperation among the UPCO partners as future water projects are planned.
H. Wafer Needs
Upper Colorado River In-Basin Water Needs
Water demands in Grand and Summit Counties will grow as the area continues to be a
destination resort and important recreation and tourism center for Colorado. Likewise,
Denver Water and the Northern Water Colorado Conservancy District are also planning
to further develop their existing water supplies, which are diverted from the study area
for use on the Front Range, as their populations continue to grow. The UPCO study
quantified current and future water demands. The following provides an overview:
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Approximately 70% of future demands are in the
Grand County 3,100 14,200
Fraser River Basin.
Approximately 25% of future demands are in the
Summit Upper Blue River area above Dillon. The remaining
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County , , future demands are primarily in the Silverthorne,
Ea les Nest, and Mesa Cortina areas.
Denver Water 285,000 386,000 Please see below for more detail.

Northern 247,800 7 p?? Additional diversions by the Windy Gap project.
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Notes:
1) For Summit and Grand Counties, the amounts shown in this table include al] of the major
water providers but do not include dispersed domestic usage in unincorporated areas not
served by major providers.
2) Current demands are based upon the year 2000. Approximately one-half of Denver's current
water supply is derived from East Slope sources in the South Platte River Basin.
3) Future demands for Grand and Summit Counties are based upon estimated buildout
conditions. Denver's future demand is for their near-term (future baseline) planning horizon
(2030) and their estimated buildout demand is 450,000 acre-feet per year.
4) Water Demands for Colorado Springs are not included because no increases in water
diversions from the Study Area are planned.
In-basin instream and Recreational Water Needs
The UPCO study also compiled information regarding instream flow water rights, water
levels necessary for water-based-recreational activities, and wastewater treatment plant
discharges. This information was used to evaluate the impact on stream flow and lake
levels, and goes beyond just the municipal and domestic water demands of the study area.
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