Rocky Mountain Section - 61st Annual Meeting (11-13 May 2009)
Paper No. 11-8
Presentation Time: 8:00 AM-5:00 PM


LOHRENGEL, C. Frederick II, Department of Physical Science, Southern Utah University, 351 West University Blvd, Cedar City, UT 84720,

Experimental laboratory exercises with water table and ground water studies are difficult to conduct. The author has developed a relatively simple device to simulate water table/ground water experiments in the laboratory. The box-like device is constructed of 3/8 inch plywood and measures 36 inches by 36 inches by 18 inches high. The top has an evenly spaced 9 X 9 gridwork of 1.25 inch holes with corresponding holes in a third piece of plywood attached to the inside of the bottom. A set of 81 pieces of ˝ inch PVC pipe 20 inches long, with a cap cemented to one end, make up the rest of the equipment.

The experiments are set-up by filling the pipes that have been inserted into the 81 pairs of holes with water to predetermined levels. Water depth in the pipes is measured by inserting a square balsawood stick into the pipe until it floats, then it is removed and the length of wood that was down the pipe is measured. Depths to water are plotted on a 9 X 9 grid of convenient scale and then contoured. After contouring the surface of the water, or other fluid ingredients, an interpretation is made.

A few possible configurations that are easily produced are: a single large cone of depression centered at one corner, a cone of depression centered in the field, a uniformly sloping water table, an injection well. By making pipe lengths longer than 20 inches topography can be simulated to demonstrate the relationship of lakes and streams to a water table. Colors, salts, and “pollutants” may be added to pipes to demonstrate saltwater incursions, “pollutant” plumes, etc. Imagination is the limiting factor with this device.

Students seem to be able to visualize the water table configurations with reasonable accuracy.

Rocky Mountain Section - 61st Annual Meeting (11-13 May 2009)
General Information for this Meeting
Session No. 11--Booth# 9
General Discipline Posters
Utah Valley University: Library 4th Floor
8:00 AM-5:00 PM, Tuesday, 12 May 2009

Geological Society of America Abstracts with Programs, Vol. 41, No. 6, p. 20

© Copyright 2009 The Geological Society of America (GSA), all rights reserved. Permission is hereby granted to the author(s) of this abstract to reproduce and distribute it freely, for noncommercial purposes. Permission is hereby granted to any individual scientist to download a single copy of this electronic file and reproduce up to 20 paper copies for noncommercial purposes advancing science and education, including classroom use, providing all reproductions include the complete content shown here, including the author information. All other forms of reproduction and/or transmittal are prohibited without written permission from GSA Copyright Permissions.