BOARD01031

• Board Meeting Date: 3/20/2000
• Description: CF Section - Riverside Reservoir and Land Company
• Board Meetings - Doc Type: Memo

Riverside Reservoir and Land Co. Agenda Item 15b.
March 20,21, 2000

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The Riverside Reservoir and Land Comoany
The RRLC is a mutual ditch company and a non-profit corporation registered in the State of
Colorado. There are 103 shareholders and 2,505 private rights (shares of stock.) The RRLC
has the power to set annual assessments to be paid by the shareholders, the power to cut off
water deliveries to shareholders that fail to pay their assessments, and the power to offer stock
for sale to pay back assessments. The RRLC delivers water to approximately 50,000 acres of
farmland located in the vicinity of Fort Morgan.

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Water RiQhts
The Company's water rights consist of:

Table 1: Water Rights owned by RRLC

Date Amount Comment
4/1/02 16,070 acre-feet Storage
8/1/07 41,437 acre-feet Storage
10/25/10 63,113 acre-feet Storage
12/31/29 56,325 acre-feet Refill storage
5/31/07 417 cfs Direct flow

Records of the State Engineer's Office indicate that average annual diversions have been
113,111 acre-feet for years 1997 through 1999.

Proiect Descriotion
Four alternatives were analyzed in the feasibility study:

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1. The no-action alternative.
2. Continue a level of minimum maintenance.
3. Rehabilitate only the river diversion structure ($450,000).
4. Rehabilitate both the river diversion and headgate structures.

Alternative 4, rehabilitate both the river diversion and headgate structures, was ruled out
because the head gate structure is in generally good condition and functioning satisfactorily. For
this reason Alternative 3 was selected, since it is considered to be a reliable approach, and is
less costly. The no-action and the minimum maintenance alternatives were considered
unacceptable since both would eventually result in partial or total failure of the diversion and
inability of the RRLC to deliver water.

Selected Alternative 3 involves construction of a reinforced monolithic concrete floor for the new
diversion structure. This concrete structure will be supported by pipe piling, and surrounded by
sheet piling driven into the riverbed. All wing walls and support walls will be 15 inches thick, and
steel reinforced. An Obermeyer Pneumatic Spillway gate and a radial gate will be installed in
the river diversion.

(The project that the RRLC plans to undertake is very similar to 3 recently completed projects,
also funded in part by the CWCS. The South Platte Ditch Company and Weldon Valley Ditch
Company rehabilitated their river diversions in 1996 and 1997 respectively. Soth projects
included the use of Obermeyer Pneumatic gates, and both have operated well. The Sterling _
Irrigation Company and Julesburg Irrigation District projects are of the same design and nearing ..
completion.)

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