A test well was drilled to a total depth of 117 ft with the following geologist’s log: The depth to water was 55 ft. The test well was screened from 82 to 117 ft. It was pumped at a rate of 560...

A test well was drilled to a total depth of 117 ft with the following geologist’s log:

The depth to water was 55 ft. The test well was screened from 82 to 117 ft. It was pumped at a rate of 560 gal/min. Drawdown was measured in an observation well that was also screened from 82 to 117 ft and was located 82 ft away from the pumping well. The following time-drawdown data were obtained:

(A) Plot the time-drawdown data on 35 cycle logarithmic paper. Compute the value of the storativity and transmissivity of the aquifer using the graphical method for leaky aquifers. Find the vertical hydraulic conductivity of the confining layer.

(B) Compute the value of aquifer storativity and transmissivity of the aquifer using the Hantush inflection-point method.