CHICAGO ROCKS! Geology in the City
ESCI 109
Spring 2010
Daily Objectives #29 (April 27, 2010)
J. Hemzacek and L. Sanders
By the end of today's class, you should be able to do the following:
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Define the terms watershed and divide.
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Demonstrate how to locate the position of a divide on a topographic map.
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Demonstrate how to outline a watershed using a topographic map.
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Demonstrate how to determine what direction a stream flows based on the pattern
of contour lines on a topographic map. (Hint: you should be able to
do this even if there are no numbered contours on the map!)
Department of Earth Science | Northeastern Illinois University
Copyright 2010 Laura L. Sanders. Last updated April 27, 2010.