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 ( ),
and average linear velocity in a porous medium (V).
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 means, and on what it is based.
particle tracking |

Ground Water Modeling:
Conceptual Model •
Describe the on the aquifer in the modeled area
(recharge, evapotranspiration, pumping)stresses•
Suggest some ways we can estimate to the aquifer at
our study site.recharge •
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.*