

Figure 29. Potentiometric surface map of the Spring Creek Groundwater Basin ca. 1969.
Source: USGS Scientific Investigations Report 2005-5091
Questions:
- Draw a few (~8-10) flow lines on the potentiometric surface map above.
- Where is the hydraulic gradient in the Spring Creek groundwater basin steepest? Where is it least steep?
- List two reasons why is it important to trace and define flowlines.
Files to Download
Download the worksheet to use when submitting your assignment.
Submitting Your Answers
Bring your printed diagram with flowlines and written answers to questions with you to class.
Grading and Rubric
A scoring rubric will be provided by your instructor.