BOARD02013

• Board Meeting Date: 11/20/2000
• Description: CF Section - Julesburg Irrigation District - Peterson Ditch Control Structures and Request for Loan Refinancing
• Board Meetings - Doc Type: Memo

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JuJesburg Irrigation District
November 20~21, 2000

Agenda Item14b, and 15a,

Feasibility Studies
Glenn Newlon, P.E., Natural Resources Conservation Service (NRCS) Greeley, has completed a
Preliminary Engineering Report and a cost estimate for the project. John Van Sciver has
completed a final draft of the CWCS Feasibility Study using information provided by the NRCS
and the District. The study includes an assessment of alternatives available for reconstruction of
the Petersen Ditch control structures on Lodgepole Creek.

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The Julesbura Irriaation District
The JID is a Colorado Irrigation District formed in accordance with CRS 37-41-101. There are
155 shareholders (landowners), 19,133 shares/bonded acres within the District. The JID has
the power to set annual assessments to be paid by the shareholders through the county tax
collection process.

Water Riahts
The water rights diverted by JID consist of the following:

ation District Water Ri hts
Decree Date CFS
1895 164
1987 34
1895 252
1904 450

Average annual river diversions are 60,000 acre-feet. Average annual deliveries to shareholder
headgates are 30,000 acre-feet.

Proiect Description
Three alternatives were analyzed in the feasibility study:

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1. The no-action alternative,
2. Repair the existing drop structure and construct a new radial gate control in the ditch.
3. Construct a new drop structure and new radial gate control structure.

Alternative 2, Repair the existing drop structure and construct a new radial gate control in the
ditch, was ruled out because the repair cost of the drop structure alone would exceed 50% of
the new construction cost. In addition, the downstream end of the structure is in very poor
condition and may not be repairable at all. For this reason Alternative 3, construct a new drop
structure and new radial gate control structure, was selected since it is considered to be the
least costly reliable approach. The no-action alternative was considered unacceptable since it
could lead to failure of the drop structure and inability of the JID to deliver water to its
shareholders serviced by the Peterson Ditch.

Selected Alternative 3 consists of constructing a new 12 foot drop chute spillway that drops
flood flows from the Peterson Ditch to the Lodgepole Creek, and construction of a water control
structure on the Peterson Ditch. The control structure on the Peterson will control flows down
the ditch beyond the spillway and will incorporate a 3-foot slide gate to direct water into a
cutthroat flume to measure augmentation flows. The spillway structure will replace an existing
one, and will be very similar to Structure Nos. 7,8,9,10 and 11 on Floodway No.1 Phase II of
the Sedgwick Sand Draws PL-566 Watershed. All walls will be 12" thick and reinforced _
accordingly. Gates include a 15' lay down gate on the spillway, and a 12' radial gate and a 3' _
slide gate on the Peterson control structure. The District plans to install automated controls on

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