This image shows the gradient of the water table between Well A and Well B.Please note that the label for each well also displays the elevation of the water table in that well.Using the information present in the figure, calculate the hydraulic gradient of this cross section.

Question

Quizplus · Accepted Answer

To calculate the hydraulic gradient, we need to find the change in elevation divided by the distance between the two wells. 
The change in elevation between the two wells is 28 m (elevation of water table in well A minus the elevation of water table in well B). 
The distance between the two wells is 2.4 km. 
Therefore, the hydraulic gradient is 28 m / 2.4 km = 11.7 m/km. 
So, the best answer choice is B.

This Image Shows the Gradient of the Water Table Between