The following tests may be performed to get an idea of the probable yield of the well: 1. Pumping Test: The water level is depressed to an amount equal to the safe working head for the subsoil. Then the water level is kept constant by making the pumping rate equal to the percolation into the […]
How to Determine the Probable Yield of Wells? | Geography
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How to Calculate the Specific Capacity of a Well? | Ground Water
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The specific capacity (Q/sw) of a well is the discharge per unit drawdown in the well and is usually expressed in lpm/m. This is a measure of the effectiveness of a well. From Eqs. (4.78), (5.89) and (5.90). Which shows that the specific capacity of a well is not constant but decreases with the increase […]
Methods of Drilling Wells and Its Revitalisation | Geography
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In this article we will discuss about:- 1. Methods of Drilling Wells 2. Drilling Programme 3. Well Revitalisation. Methods of Drilling Wells: Wells may be dug, bored, driven, jetted or drilled. Simple drilling methods like drive point, jetting, and hand boring can be adopted in favourable conditions for construction of shallow wells up to 25 […]