The non-equilibrium equation can be used to determine the storage coefficient and transmissivity of confined aquifers. These aquifer constants are useful in the design of tubewells and for studying groundwater movement. Several approximate solutions have been developed for the purpose. Some of them are outlined in the following paragraphs: 1. Theis Method: This is a graphical method of superposition that [...]
In this article we will discuss about how to construct multiple well systems. If there are a number of pumping wells in a given well field, the drawdown at any point is the sum of the drawdowns due to each pumping well, for which the distance of the point from each well and the discharge of each well should be [...]
Under recharge boundary conditions, water level in the observation well will drawdown initially under the influence of the production well only. When the cone of depression spreads to the recharge boundary, the time-rate of drawdown will change, due to the influence of the image well. The time-rate of drawdown will thereafter continually decrease till eventually equilibrium conditions are reached, when [...]