WSP03503

• File Number: 8111.800
• Description: Arkansas River Compact Administration
• Basin: Arkansas
• Water Division: 2
• Date: 12/9/1964
• Author: John Moore
• Title: Progress Report on the Arkansas Valley Analog Model
• Water Supply Pro - Doc Type: Report/Study

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PROGRESS REPORT ON THE ARKANSAS VALLEY ANALOG MODEL

By

John E. Moore
(For presentation at Colorado Water Conservation Board,
December 9, 1964)

The irrigation system in the Arkansas Valley was
originally developed around surface-water supplies and

storage. However, the amount of surface water available

varies appreciably with climatic changes. Consequently,

the qround-water supplv has been developed to provide

supplemental water to crops during periods of deficient

surface-water supplies.

In the Arkansas Valley the ground water in the sand

and gravel deposits is intimately associated with the
Arkansas Ri ver.

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Figure 1.

~rogeologic cross section of the Arkansas Valley. ),

The relation of the water in the sand and gravel deposits

to the river is S?own on this idealized hydrogeologic cross
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section~ The ~iver is hydraulically connected with the

water-bearing sand and gravel and is one of the controls on

the water level in these deposits, and during much of the

year drainage from these deposits sustains the flow of the

river. In fact. the ground-water body is there largely

because of diversion for irrigation from the river. The

ground-water reservoir is recharged by applied irrigation

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