PROJ00300

• Contract/PO #: C153643
• Contractor Name: Morgan County Quality Water District
• Water District: 0
• County: Morgan
• Bill Number: XB 99-999
• Loan Projects - Doc Type: Feasibility Study

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The Chadron and Ogallala formations .of Tertiary Age overlie the Pierre

shale in local areas in the upper part of the Camp Creek basin. These

deposits consist of sands, gravels and siltstones of fluvial origin. They

are more consolidated than the younger deposits, but are often difficult

to distinguish in drillers' logs. Earlier investigations by Nelson, Haley,

Patterson and Quirk show that Town of Akron wells developed in the Chadron

formation have reversed ground-water gradients locally so that they are

diverting some ground water from the Camp Creek alluvium.

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The Camp Creek alluvium overlies all of the older formations and con-
sists of coarse-grained sands and glavels of Pleistocene to Recent Age.
These deposits range from 0 to 130 feet in thickness and generally underlie
the present drainage pattern of Camp Creek. The ancestral channel varies
greatly in width, ranging from 2 to 3 miles in the area investigated. Coarse
sand and gravel beds occur in the central portion of the channel where
well yields of 1000 to 1500 gallons per minute ar~ obtainable.

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The Camp Creek watershed is shown in Figure 1. The watershed which

contributes to the area of this investigation contains approximately 100

square miles. A sizable portion of the lower half of the watershed is

overlain by sand dunes. Lack of surface-drainage features through the

sand dunes area and characteristics of the surface channels that do exist

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indicate that v~ry little of the precipi~ation which falls on this basin

flows over the surface as far as the South Platte Valley. Thus, a high

percentage of the precipitation falling upon the 100-square-mile watershed

is either evaporated and transpired back to the atmosphere or percolates

downward to the ground-water system.

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Saturated thickness of the aquifer

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The area of interest to this investigation lies in the lower portion of

the Camp Creek alluvium. The reasons for choosing this location included

(1) the proximity to the area to be served and (2) the desirability of

obtaining as large a contributing drainage area as possible. The lower

portion also contains the greatest saturated thickness and potential for

well development.

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M. W. BITTINGER AND ASSOCIATES, INC.