PROJ00246

• Contract/PO #: C153829
• Contractor Name: Eagle Park Reservoir Company
• Contract Type: Loan
• Water District: 37
• County: Eagle
• Bill Number: SB 96-153
• Loan Projects - Doc Type: Feasibility Study

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estimate. The UERWA's service area and points of diversion and other features are shown
in Plate 2.

Water Sources. ERWSD operates and maintains UERWA's diversion, treatment and
conveyance facilities as well as the metropolitan districts' distribution and storage facilities.
With the completion of the recent enlargement, the UERWA Water Treatment Plant has a
capacity of 10 mgd (15.4 cfs). Water can be diverted from the Eagle River by the Metcalf
Headgate and flow by gravity 1.4 miles to the plant or can be pumped from the river to the
plant by the Raw Water Booster Pump. This latter diversion is located just upstream of the
discharge point for the Avon Wastewater Treatment Plant which thereby reduces
significant depletions to stream flow to a short segment. Each metropolitan district added
the Metcalf and Raw Water Booster Pump Headgates as alternate points of diversion for its
municipal water rights in Case Nos. 85CW608 through 85CW613.

UERWA also uses the Edwards Well No.2 and June Creek Ranch Well Nos. 2 and 6
(aka Berry Creek Well Nos. 1 and 2). These wells are located near the confluence of Berry
Creek and the Eagle River and have a combined capacity of 0.7 mgd (1.1 cfs). For the 12
months ending October 31, 1996 UERWA produced 3,508 acre-feet for municipal purposes
of which 108 acre-feet were produced by the wells. The total production equates to about
315 gallons per day per SFE for in-building and outdoor water uses.

Plans for Augmentation. Each member entity owns direct flow and storage rights
that were changed to municipal use or included in plans for augmentation. The plans for
augmentation generally include relatively junior water rights decreed for municipal purposes
and relatively senior water rights originally decreed for irrigation purposes. Pertinent
information concerning the water rights formerly used for irrigation purposes which now
are used for replacement of out-of-priority depletions is shown in Table 4. Also, UERWA
contracted for 220 acre-feet of water from Green Mountain Reservoir which is included in
plans for augmentation decreed in Case Nos. 92CW291 and 92CW295. During the
summer months, the out-of-priority depletions are replaced by historical consumptive use
credits developed by drying-up the irrigated fields. During the remainder of the year the
out-of-priority depletions with respect to mainstem Colorado River calls are replaced by
contract releases from Green Mountain Reservoir. The Green Mountain Reservoir releases
do not affect Eagle River stream flow, whereas Eagle Park Reservoir releases would enter
the Eagle River upstream of the UERWA's diversion points and thereby enhance stream
flow in most river segments and replace deletions in other segments. Following are
descriptions of each entity's plan for augmentation and the sources of water used for the
proposed exchanges to Eagle Park Reservoir.

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