Objectives 1
Department of Earth Science |Northeastern Illinois University

ESCI 337
Spring, 2009

Daily Objectives #12 (February 24, 2009)                                        Dr. Sanders

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

Hydraulic Properties of Rocks and Sediment

v  Review: Define the terms aquifer and aquitard.

v  List rocks and sediments that commonly are used as aquifers, and those that commonly form aquitards.

v  Describe the effect of fracturing on the hydraulic conductivity of a rock or sediment.

v  Explain what is meant by hydrostratigraphy, and tell how it differs from lithostratigraphy.

What makes water flow?

w Draw a water table map for an area of low relief with a stream running (west to east) through the center.

w Draw a water table map for an area of low relief with an oval-shaped lake in the center.

w Using your water table contour map from the end of Chapter 3 (which we worked on last time), draw flow lines to indicate the direction of ground water flow throughout the area.

State the rules of contours with regard to their touching, crossing, or ending; explain how to choose and use appropriate contour intervals; and tell how to determine where to stop drawing contours near the edges of a map.

List the three kinds of lines that one draws when creating a flow net, and explain the purpose/meaning of each kind of line.

w For each kind of line in a flow net, tell how it relates to the other kinds of lines (e.g. perpendicular, parallel, oblique).

Department of Earth Science | Northeastern Illinois University

Copyright 2009 Laura L. Sanders.  Last updated February 26, 2009.