LPPD000391

• Contract/PO #: C153715
• Contractor Name: Lower Arkansas Water Management Association
• Contract Type: Loan
• Water District: 67
• County: Prowers
• Bill Number: SB 96-124
• Loan Projects - Doc Type: Feasibility Study

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March 1996 Final

(2) to refine estimates of the augmentation credits that LA WMA should obtain from these and
its other replacement sources, (3) to estimate the water requirements for the potential sale
of the X- Y Ranch to the Colorado Division of Wildlife and its revegetation, (4) to refine the
conclusions with respect to the adequacy of the LA WMA augmentation program and any
shortfall in replacement water, (5) to provide additional information concerning the financial
feasibility of LAWMA's proposed augmentation program, and (6) to report on LAWMA's
activities to comply with the requirements of C.R.S. ~37-60-130(3) for the Arkansas River
Augmentation Loan Account.

The intent in preparing this report is to present additional data and information and not
to duplicate the data and information in the July 1995 report. Consequently, estimates of
pumping and pumping depletions were not updated to reflect changes in membership after
that time. The reader is frequently referred to this earlier report.

LAWMA's X-V AND MANVEL WATER RIGHTS

General

This report section provides additional information concerning the historical use of the
X-V and Manvel water rights that LAWMA is expecting to acquire in 1996. It also estimates
the yields of these interests under the hydrologic conditions of 1 990-94 and proposes a
procedure for determining the water that will be available to them in the future.

The X-V Ranch

The X-V Ranch and its associated water rights were discussed in the July 1995 report.
That discussion included historical diversions, irrigation efficiencies, and consumptive use
during the post-compact period of 1950-94. As shown in Plate 2 in the July 1995 report, the
ditch diverts from the south bank of the Arkansas River about 18 miles east of Lamar. The
water rights that were associated with the X-V Ranch consisted of 66.0 of 69.0 cfs decreed
to the X-V Irrigating Ditch and those for a number of wells on the ranch. The area historically
irrigated on the X-V Ranch in 1985 was estimated at 3,026 acres.

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