Department of Earth Science |Northeastern Illinois University

PRINCIPLES OF HYDROGEOLOGY
ESCI 337
Fall, 2005

Daily Objectives #3 (September 7, 2005)                                        Dr. Sanders

Announcements/Reminders:
Homework #1 is due at the beginning of class today.
Lab #1 is due at the beginning of class today.
If you have not yet responded to the e-mail message I sent last week, please do so before leaving today.  (If you didn't get it, let me know asap!)

v The Ground Water Flow Model

 Thought questions: What did it mean?  What is a flow system?  What are boundaries to flow?  Is flow constant?   Is it the same everywhere?  Why?  Why not? What to do: Sketch a diagram of the flow system in last week's ground water model, including the following features:                  Surface water                  Ground water                  Boundaries of the flow system                  Flow directions (show with arrows)                  Flow velocities

v Water Level Measurements

 Thought questions: What did it all mean?  Why did water level change?  Why didn't it change faster/slower?  How can we quantify this? What to do: Compare the graphs from each group.  (For example, do they show the same thing happening, and at the same rate?  How are they the same?  How are they different?)              In your original group, you made a list of variables that might affect the relationship between pumping and water level in the well.  In your new group, compare lists and compile a longer list.  Take that list and quanitify all those that you can for the tests that we done on Wells #1, #2, and #3.  For example, if you wrote, "Depth of the well" as a variable, then collect data on the depths of each of the three wells.  Do this for each of the variables, and see if you can explain the differences by using this data.                 Propose a test that would allow you to quantify the relationship between pumping and water level in the well.  You did this in your original group; now in your new group, compare your answers and resolve them.

By the end of today's class, you should be able to do the following:

v Drainage Basins

t  Write a definition of the concept of drainage basin.

t  Using a topographic map, select any point on a stream and outline the drainage basin for that point.

Department of Earth Science | Northeastern Illinois University

© 2005 Laura L. Sanders.  Last updated September 7, 2005.