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:- 1. Meaning of Aquifers 2. Types of Aquifers 3. Ingression of Seawater. Meaning of Aquifers: An aquifer is a rock formation that has the capacity to host large quantities of groundwater. Well-defined aquifers consist of unconsolidated sedimentary rocks such as gravel and sand, which constitute beds of considerable thickness. These aquifers may occur [...]
There are many methods of estimating evapotranspiration. Some of these are briefly described in the following: 1. Soil Moisture Sampling: A large number of samples are taken from various depths in the roots zone and the soil moisture depletion studies are made. 2. Tanks and Lysimeter Experiments: Keeping an account of water added and soil moisture changes by weighing the [...]