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 [...]
If a relatively thin impervious formation of a stiff clay layer is encountered at a shallow depth underlain by an extensive thick confined alluvial aquifer, then it is an excellent location for a cavity well. A hole is drilled using the hand boring set, and casing pipe is lowered to rest firmly on the stiff clay layer, Fig. 5.54. A [...]