PROJ00090

• Contract/PO #: FS0015X
• Contractor Name: Powderhorn Metropolitan District No. 1 and No. 2
• Contract Type: Loan
• Water District: 0
• County: Mesa
• Loan Projects - Doc Type: Feasibility Study

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Name Case No. Amount Appropriation Adjudication
Date Date
H.D. Robbins Reservoir
Presnell Enlargement 8303 50 a.f. 5/18/53 7/21/59
H.D. Robbins Reservoir 88CW342 56 a.f. 8/4/86 12/31/88

Long term development of the District's water supply relies heavily on the ability of
Robbins Reservoir to store spring runoff in priority for release in accordance with the
augmentation plans. Although the District has other sources of augmentation water on
Mesa Creek, physical and legal constraints have prevented the District from effectively
implementing its augmentation plans without Robbins Reservoir.:

· The District's senior irrigation rights on Mesa Creek cannot satisfy non-irrigation
season calls by various downstream senior water users. Although the District
owns water stored in Mesa Lakes at the top of Mesa Creek, institutional
restrictions prohibit release of that water during the nonirrigation season.

· During the irrigation season, use of the district's senior irrigation rights and Mesa
Lakes water is effectively precluded by the existence of a 2.5 mile segment of
Mesa Creek which is completely dried up by diversions of the Mesa Creek Ditch.
With the exception of Robbins Reservoir, all of the D}strict's augmentation water
is located upstream of the Mesa Creek Ditch, and is, therefore, subject to a very
substantial reduction or complete loss as it flows down this dry stream segment.

· Although diversions for snowmaking usually occur in priority, they occur almost
exclusively at night and consume much of the stream flow. Downstream users on
Mesa Creek complain that these fluctuations in streamflow cause their headgates
to freeze.

Efforts to implement structural solutions to the dry stream segment have been
unsuccessful. A long pipeline from the top of the dry stream segment to Big Beaver
Creek was installed, but has proven impractical due to constant structural failure,
inaccessibility for maintenance, pumping costs and other related reasons.

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