Introduction to Hydrogeology

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1a. When constructing flow nets, what are the two rules for drawing flow lines?
1b. When constructing flow nets, what are two rules for drawing equipotential lines?
1c. What is the hydrologic boundary condition at water table?

2. Draw the flow net for the following flow domain and calculate the total volumetric flow rate
   assuming 1 m thickness perpendicular to the page. Assume K = 5 × 10-2 cm/s
3. Draw the flow net for the following hill slope and calculate the total volumetric flow rate,
   assuming 5 m thick in the direction perpendicular to the page. Assume K = 3×10-3 cm/s. What is
   the total head at A? Indicate the head at A by marking the water level in the piezometer.
   No flow
   Constant head
   h=60 m
   Constant head
   h=20 m
   No-flow boundary
   Z=750 m
   Z=0 m
   Z=375 m
   No flow
   No flow
   No flow
   • A

Sample Solution