Department of Earth Science | Northeastern Illinois University

Principles of Hydrogeology
Earth Science 337
Spring 2002

Daily Objectives #5                                                                                         Dr. Sanders
(January 22, 2002)

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

* Use the Thiessen method to calculate EUD of precipitation for an area.

* Describe the instruments used to measure streamflow.

* Describe the components of the streamflow data published by the USGS.

Updated January 23, 2002.