Objectives 1
Department of Earth Science |Northeastern Illinois University

PRINCIPLES OF HYDROGEOLOGY
ESCI 337
Spring, 2009

Daily Objectives #20 (April 2, 2009)                                        Dr. Sanders

A new homework assignment is posted.

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

 
Ground Water Modeling: Basic Concepts and Analytical Models

       
Express, in the form of an equation, the relationship between discharge and flow velocity in an open conduit.
       
Apply that equation to Darcy's Law to come up with a new formula for estimating flow velocity in a porous medium.
       
Explain the difference between velocity of flow in an open conduit (V), and average linear velocity in a porous medium (vx).
        Explain how to calculate how far a particle of water (or a contaminant)
will flow in an aquifer over a given amount of time. 
       
Explain what particle tracking means, and on what it is based. 
 
Ground Water Modeling: Conceptual Model

    Describe the stresses on the aquifer in the modeled area (recharge, evapotranspiration, pumping)
    Suggest some ways we can estimate recharge to the aquifer at our study site.
 
    Pete found these excellent resources for our study area:
            "Co-op 10" of the ISWS             USGS document     Regional planning document

 
Ground Water Modeling: Practice

    
Work through all the steps described in the First Steps and  Building Your Model  documents (from a few weeks ago).  Today should be the day you get your model to run!
     Once your model runs, display particle tracks, and contour the hydraulic head values. 
     Evaluate your results.  Are they similar to others' results?  How can you explain the differences? 
 

Department of Earth Science | Northeastern Illinois University

Copyright 2009 Laura L. Sanders.  Last updated April 2, 2009.