Objectives #15

Department of Earth Science |Northeastern Illinois University

PRINCIPLES OF HYDROGEOLOGY
ESCI 337
Spring, 2004

Daily Objectives #15 (March 4, 2004) Dr. Sanders

* If you haven't already done so, please fill out and hand in the "Peer Rating of Team Members" form.
* Exam #2 is next week! Click here for a review sheet that summarizes all the pink sheets.

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

Old Business

v Explain the meaning of the terms hydraulic conductivity (K) and intrinsic permeability (K_i), and explain the difference between the two.

v Convert latitude and longitude measurements from units of decimal degrees to units of degrees, minutes, and seconds.

v Draw a contour map of ground water elevation for the shallow aquifer (glacial sediments) based on the values given on the map on p. 110.

New Business

v Estimate how much water will drain from a saturated porous medium. (We will test the estimates by seeing how much drains from the Darcy tube!)

v Evaulate and interpret results from the Darcy tube experiment.

v Given any Darcy tube set-up, correctly predict the relative levels of water in the vertical tubes.

v Given two different Darcy tube set-ups, correctly predict which will yield a greater discharge (Q).

v State Darcy's Law and explain each of the variables in the formula.

v Give a working definition of hydraulic head (dh).

v Give a working definition of hydraulic gradient (dh/dl).

v Using the map of ground water levels in southeast Wisconsin that you made last time (see p. 110), assuming the aquifer is 50 ft thick, and assuming a hydraulic conductivity (K) value of about 3 ft/day, estimate the ground water flow into Lake Michigan in T5N, R22E. Then, do the same for T7N, R22E--but be careful, as this one's trickier!

Department of Earth Science | Northeastern Illinois University