Department of Earth Science |Northeastern Illinois University

Measuring Water Levels in Wells

1) Which Well Number were you assigned?  (Well numbers are 1, 2, and 3)

2) Find the depth to water in your well.

3) Find the total depth of the well.

4) Determine the volume of water in the well.

5) Determine how many five-gallon buckets of water it would take to hold half the volume of water in the well.

****** Before you perform Steps 6-7, carefully review them and develop a plan for making the
required measurements. *****
****** Then, check with the instructor before proceeding.
********

6)
a) Mark the time (to the nearest second) before you begin (or use a stopwatch starting at time zero).

b) Remove from the well the volume you calculated in Step 5.
Immediately after withdrawing this volume of water, measure depth to water again.

7) Monitor water level frequently for the next several minutes, recording time and depth measurements.

8) Prepare a graph of the data you recorded in Steps 6 and 7.  Plot time on the horizontal axis, and depth on the vertical.  Label the graph with your names and the Well Number, and post the graph on the chalkboard.

9) In no more than two paragraphs,
explain your observations and any differences between the graphs for the different wells.

10) Make a list of variables that might affect the relationship between pumping and water level in the well.

11) Frequently, hydrogeologists want to compare how different wells respond to pumping.  Develop a testing protocol (write out a precise sequence of steps for a tester to follow) for such a test.

12) Prepare a neat report giving your names and your responses to Steps 1-11 (above), including a neat table showing your data, and your graph.  Before leaving, hand in one report per group.  All group members will receive the same grade on the work.

Department of Earth Science | Northeastern Illinois University

© 2007 Laura L. Sanders.  Last updated September 4, 2007.