Two piezometers (observation wells) are driven into a confined aquifer. The piezometer A is located 4,000 ft south of piezometer B. Approximately 3,000 ft of piezometer B there is a river with an elevation relative to sea level of about 455 ft. The confined aquifer has a thickness of 100 ft and 285 ft hydraulic conductivity * d-1. Aquifer effective porosity is 30% and the water temperature is 25 C.
Information piezometers A and B
|
piezometer
|
A
|
B
|
|
Elevation (msl)
|
480 ft
|
610 ft
|
|
Water Depth
|
40 ft
|
140 ft
|
MSL = mean sea level. With respect to sea level.
determine:
1. The direction of flow
2. The hydraulic gradient
3. Groundwater flow per unit area in ft3/day April. Groundwater flow per unit width of the aquifer.