BOARD01308

• Board Meeting Date: 5/16/2006
• Description: CF Section - New Project Loans - Logan Irrigation District - Prewitt Reservoir Emergency Spillway Construction
• Board Meetings - Doc Type: Memo

Logan Irrigation District
May 16,17.2006

Agenda Item 11a

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within the service area is primarily used to grow corn, alfalfa, sugar beets, pinto beans, and feed
crops,

Following adoption of a budget resolution in October, the LID certifies the required levy to the Logan
County Commissioners, with copies to the State Treasurer and Department of Local Affairs. State
revenue laws pertaining to the assessment, levying, and collection of property taxes (including
enforcement of penalties and forfeiture for delinquent taxes) are applicable to LID, LID may also
refuse delivery of water to lands until all past due or delinquent assessments have been paid in full.
(C,R.S 37-43-143.) Because this loan contract exceeds $75,000, the Irrigation District Law of 1905
requires the LID to hold a special election of the legal electors in the district to authorize and ratify
the contract. C.R.S, 37-41-113(4), The election must follow the same procedures that the district
would follow to authorize the issuance of a bond. (See the election procedure in C.R.S. 37-41-117.)

Iliff Irrioation District (Cooperating Entity) - liD was also organized under the Irrigation District Law
of 1905 on March 6, 1911, There are 65 landowners and 10,874,3 District acres, The current levy
is $1.50/acre. The service area of the district extends from about midway between Sterling and IlIiff
east to about 3 miles east of Crook,

Moraan Prewitt Reservoir Companv (Cooperating Entity) - MPRC was organized as a Colorado
non-profit corporation on February 10, 1923. There are 58 shareholder holding 261 shares of
stock. The current assessment is $50 per share. MPRC serves various properties in Morgan and
Logan Counties,

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As previously mentioned, a special agreement among the three parties is being drafted. This is
being drafted by LID attorney Mary Hammond and will specifically address loan responsibilities of
the parties, and will recognize CWCB as a 3m Party Beneficiary to the agreement.

Water Riohts

The Prewitt receives water under Priority 75A for storage of 32,300 acre feet of water at a rate of
695 ds with an appropriation date of May 25, 1910. The Prewitt Reservoir also has Priority 75R for
refill of up to 34,960 acre feet of water with an appropriation date of December 31,1929,

Proiect Description

The purpose of this project is to construct an emergency spillway to provide unrestricted overflow to
pass flows resulting from 75% of the Probable Maximum Precipitation (PMP) without overtopping
the dam, The hydrology study was completed by W,W, Wheeler and Associates, Inc. and has been
approved by the SEO, The investigation of the area adjacent to the reservoir revealed a natural
depression near the mouth of the inlet canal which would carry most of the flow from the PMP, but
was not low enough to bring the reservoir back down to its full storage level. The Prewitt Operating
Committee considered four alternatives in order to reach the current spillway design. The four
alternatives are:

1. The no-action alternative.
2. Lower the current natural depression,
3. Construct a pipe spillway near the west center area of the reservoir,
4. Construct a pipe spillway in the darn near the outlet.

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Alternative 1, No-action alternative - This was considered unacceptable since it means the
Prewitt Reservoir storage would be further restricted by the SEO.

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