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

whether it will be regulated in reservoir storage. Although LAWMA probably can purchase
water from these sources during the next few years, the long term availability of these
sources is questionable. Allowing for 15 percent transit losses to bring this water into Water
District 67, the actual cost to LAWMA would range from about $7.06 to $23.53 per acre-
foot. In addition, several of the ditch companies in Water District 67 have indicated they
would be willing to sell water to LAWMA from their share of the transit loss account residual.

Comoarison of Well Deoletions and Reolacement Water Reauirements

Table 9 shows the accounting of LAWMA's replacement credits and replacement
requirements for 1990-94 average well pumping. Column 2 indicates whether the accounting
entries are well depletion values or replacement deliveries. Column 3 shows the consumptive
use that was estimated for the various replacement deliveries. Columns 4 and 5 show the
accounting with respect to Colorado water rights -- the amounts of the well depletion values
or replacement deliveries in acre-feet and remarks relating to the derivation of the amounts.
Columns 6 and 7 show the accounting with respect to Usable Stateline Flow. Negative values
are used in Columns 4 and 6 with well depletion values, and positive values are used with
replacement deliveries.

Above Keesee. The well depletions affecting Colorado surface rights above the Keesee
headgate were estimated at 408 acre-feet. These well depletions affected primarily the Fort
Bent Ditch or were passed downstream under the priority system to the Amity or Lamar
Canals. LA WMA would take credit in this reach for 164 ace-feet of transit loss account water
and 1 34 acre-feet of Fryingpan-Arkansas Project return flow. These two values were
obtained from Tables 6 and 7 of the July 1995 report. It was assumed that only 88 acre-feet
of this Fryingpan-Arkansas Project water (66 percent of the total) accrued to the river during
April through October. LAWMA also would dedicate 152 Fort Bent Ditch Company shares
for use within that system. These 152 Fort Bent shares would yield an average of 156 acre-
feet to the remaining Fort Bent shareholders after reduction for a 23 percent canal loss.

The replacements made with Fryingpan-Arkansas Project return flow and Fort Bent
shares would also increase Usable Stateline Flow. Analyses made with the Kansas H-I Model

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