LPPD000265

• Contract/PO #: C153756
• 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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. Sole source users pay a slightly higher cost per acre-foot of pumping as compared to
supplemental users due to sole sources' higher depletion factors;
. Percentage of revenue from supplemental users is slightly higher than in C I due to
increased allocations to supplemental users during average years;
· Board makes allocations on an arumal basis;
. Source of revenue is variable, depending on amount of allowable depletions in a given
year.

Alternative C 1.5

TIlls alternative is designed as a transition from current practices by LA WMA to a share
system that would be implemented at a future date. TIlls alternative is discussed more fully
in Appendix:

· TIlls scheme splits the difference between CI and C2. It retains the present membership
structure;
. Allocates water based on splitting the difference of relative demand for by irrigators in
a dry year and historical or normal conditions. Supplemental irrigators would be
allocated additional water relative to a normal year, but this supply falls short of their
demand than under C2. Concurrently sole source users are restricted in a dry year;
· Storage is insufficient for subsequent dry years;
. Sole source users pay a slightly higher cost per acre- foot of pumping as compared to
supplemental users;
. Percentage of revenue from supplemental users is higher than in CI but lower than C2;
· Board makes allocations on an annual basis;
· Source of revenue is variable, depending on amount of allowable depletions in a given
year.

Alternative S 1

· Changes membership structure to share structure;
. Initial share distribution based on the historical pattern of annual depletions in a
normal year;
. Once initial share allocation is made, the Board may adjust the water per share as
needed on an armual basis;
. Allocates enough water in wet and average years to cover the full depletion demand of
all members;
. Creates storage reserves for initial dry years but is insufficient for subsequent dry years;
· In critical dry years, it disproportionately reduces the amount of water available for
supplemental users relative to their demand;
· Sole source users pay a higher bill per acre-foot of pumped water than supplemental
users due to higher depletion factors;
· Source of revenue is stable (i.e., it does not VaI)' with amount of depletions).

EnWater Resource Consultants September 5, 1997 Final Report

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