The following data were collected at a nest of piezometers (several piezometers of different depths located within a few feet of each other), each of which is screened (open) only at the bottom.
A B C
Elevation at surface (m above sea level) 225 225 225
Depth of Piezometer (m) 150 100 75
Depth to water (m below surface) 80 77 60
a) What is the hydraulic head at A, B and C?
b) What is the pressure head at A, B, C?
c) What is the elevation head at A, B, and C?
d) What is the vertical hydraulic head gradient between the piezometers?