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Abstract
This project describes procedures for assessing
and comparing alternative designs of a well to extract
water from an unconsolidated confined aquifer. The
aquifer considered is a simplified model of the Rosevale
aquifer system (Ref, 2) for which the hydraulic coefficients
have been determined from pumping tests.
Hydraulic performance of wells having various
dimensional features are investigated using two of the
computer programs developed by Huyakorn (Ref. 12)for the
Australian Water Resources Council. These programs
take into account non-Darcy flow which may occur in the
near-well zone under certain conditions.
The cost of pumped water per acre-foot is taken as
a basis for comparing the alternate well designs.
Following the selection of suitable well construction
techniques, the costs of construction are calculated and
presented in tabular form. Other factors affecting the
selection of an optimum well design such as the total
amount of water applied, the time necessary to pump a
given amount of water, the horsepower requirements and
motor size for given rate of discharge, the cost of
power and the total cost of pumping are discussed. The
values involved are calculated or assigned.