Department of Earth Science |Northeastern Illinois University

PRINCIPLES OF HYDROGEOLOGY
ESCI 337
Fall, 2007

Daily Objectives #19 (November 1, 2007)                                        Dr. Sanders

By the end of today's class, you should be able to do the following:
v (Review) Ground Water Modeling: Numerical Model
  • Explain the difference between a conceptual model and a numerical model.
  • Explain the purpose of a numerical model grid.
  • Explain how Darcy's law is used in a numerical model
v Ground Water Modeling: Practice
  • Describe the steps in constructing a model, as given on pages 526-527 of the Fetter textbook.
  • Download and install the modeling program Graphic Groundwater, authored by Dr. Steven Esling at SUI/Carbondale. 
  • Use Groundwater to create a model or a given study site.
  • Assign reasonable values to the variables in the model, and support your choice for each variable.

Today's Agenda:


v Ground Water Modeling: Conceptual Models
v Ground Water Modeling: Numerical Models
For further thought:
v Ground Water Modeling: Practice

How do we come up with "hard numbers" for each variable in a ground water model?  Find reasonable values or ranges of values for these variables:
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Items carried over from last time:

Homework due today, Thursday, November 1: 

1) Write a 1-2 paragraph description of the geology of the study area.  (Refer to the cross section.) 
2) Write a 2-3 paragraph description of the conceptual model, including at this point, the hydrostratigraphy and the boundaries to the flow system (we will add the other components next time).

The documents describing step-by-step model construction appear at the links below.  We looked at these last time; they are here for your convenience. 
First Steps and   Building Your Model    A graphic image of our study area is posted here!

Department of Earth Science | Northeastern Illinois University

© 2007 Laura L. Sanders.  Last updated November 1, 2007.