Daily Objectives

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 (v_x).
        • 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