Nomographs for the Rapid Analysis of Aquifer Tests
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THE coefficients of transmissibility and storage are two important aquifer characteristics determined during many ground water investigations. The coefficient of transmissibility indicates the ability of an aquifer to transmit water ; in US Geological Survey usage, it is expressed as the rate of flow of water (in gallons per day) through a vertical strip of aquifer, 1 ft wide and extending the full saturated height, under a hydraulic gradient of 160 per cent at the prevailing temperature of the water. The coefficient of storage is the amount of water released from