Lab 4

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University of Waterloo *

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Geography

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Dec 6, 2023

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pdf

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Lab #4: Pumping Test and Aquifer Assessment By: Myles Charles Student ID: 20967128 Date: November 17, 2023
1. Below is our collected field data overlapping the basic Theis curve a. b. c. From my calculations above T=0.22958 and S=0.00505966. Based off earlier labs the material in the area is mainly silty sand this would mean a relatively medium storativity as well as transmissivity. Therefore yes, these calculations are consistent with the geological material we expect to be found in the area.
2. a.
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b. c. To determine the capture zone of the pumping well using the potentiometric surface map you can start from the pumping well and draw flow lines outward away from it toward certain monitoring wells you’ve chosen or vice versa. If the lines intersect or come close to these wells, those wells are within the capture zone of the pumping well. From this you can map out what wells will or will not be within the zone and draw and line around the area. In the image below I chose 6 different wells in different areas and drew a flow line from each. After doing so I determined that all the wells in the red circle are within the capture zone of the pumping well
3. a. Based on the capture zone above I believe the salt plume does pose a health risk to the pumping well. This can clearly be seen through the flow lines drawn from the well directly below the salt which flows almost straight into the pumping well
b.
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