Some clues regarding the water bearing properties of rocks are given as follows: (i) Permeability and non-porosity which is significant in water yielding of rocks. (ii) Beside weathering and texture, the presence of numerous sets of joints, fractures, cleavages and faults breccias form the good water bearing zones in igneous and metamorphic rocks. (iii) Solution opening in limestones and dolomites [...]
The factors to be carefully studied before selecting a site for sinking a well are: (i) Topography: The valley regions are more favourable than the slopes and the top of hill rocks. (ii) Climate: Maximum temperature, the annual rainfall region, intensity of sunlight and humidity are of considerable value. Semi-arid zones are more favourable than arid zones. (iii) Vegetation: (a) [...]
This article provides a diagram of hydrological cycle. The rain water that falls on the ground surface is divided into three parts: They are: (i) One part directly returns to the air as water vapour by evaporation and transpiration from plants. (ii) Another part flows over the surface in rivers and ultimately reaches sea or ocean. (iii) The third part [...]