Homework #4 (on lab tests of hydraulic properties) is due at the beginning of class. One per group!

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

v Use the Darcy tube to
investigate the variables in Darcy's Law. Perform tests by
filling the tube with sediment, saturating it, setting the orientation
of the tube, allowing water to flow into the tube using the constant
head funnel, measuring the discharge during the test, and monitoring
gradient during the test by using the piezometers. Try to fit the
data to Darcy's Law to determine the hydraulic conductivity of the
sediment. Alter the variables and run more tests; determine if
Darcy's Law still holds true.

v Explain the meaning of the
terms piezometer, hydraulic gradient, hydraulic conductivity,
cross-sectional area, aquifer, aquitard, hydraulic head, constant head,
discharge.

v Use the ground water flow model to investigate a flow
system. Use dye to reveal the flow paths (each student should
inject some dye--use red, green, and blue). Use the piezometers
on the back side of the model to determine hydraulic heads at as many
locations as possible.

v Determine how you would find
flow paths, find hydraulic gradients, and estimate travel times if you had only data from the piezometers
to work with.