WSP00119

• File Number: 8143.700
• Description: John Martin Reservoir - Water Sales - Contracts
• Basin: Arkansas
• Water Division: 2
• Date: 1/1/1980
• Title: Evaluation of the 1979 Agreement - preliminary
• Water Supply Pro - Doc Type: Report/Study

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Evaluation of the 1979 Agreement

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Introduction

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w:.. The. 1979 Resolution concerning the operation of John
~l Martin Reservoir effected greater beneficial use of stored
water in the following ways.

1) It prevented th~ emptying of the reservoir. The
amount of time that storage water was available
was extended. A more dependable water supply was
created.

2) The theoretical emptying of the reservoir occured
by transferring water into storage accounts. This
rate of transfer should have simulated past water
use practices.

3) Colorado ~nd Kansas no longer had to call for
storage water simultaneously to prevent one state
from draining the re~ervoir. A certain percentage
of the stored water was put in each account. It could
then be called for use when needed.

4) Downstream users were able to keep a constant head
at their ditches by calling for account water to
augment river flow.
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In evaluating the success of the 1979 agreement, an
~ examination of past water use practices, especially release
demands, became necessary. This was to establish rates for the
transfer of conservation pool water into agreement accounts.
Averages were completed for each event. If a storage event
l-asted longer than a month, a monthly release average was computed
instead of one value for the entire event. Average (mean)
release values, their standard deviation, the medians and the
modes using daily values were also computed. The six years when
the reservoir was not drained: 1949, 1950, 1951, 1958, 1960
and 1967 were not included in the analysis. In computing the
average release rates, the first and last values of the event
were deleted. These-values are usually affected by the time of
day that they begin or end and so are not indicative of water
demands.

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