Question

1. A well having 34 cm diameter penetrates 26m below the static water level. After 24...

1. A well having 34 cm diameter penetrates 26m below the static water level. After 24 hours of pumping at 5500l/min, the water level in a test well at 95m away is dropped by 0.7m and at a well 38m away the drawdown is 1.2m. Determine A. Transmissibility of the aquifer(2pts) B. The drawdown in the main well if the distance from the center of the main well to the point in the aquifer where the draw down becomes zero is 250m(2.5pts) C. Specific capacity of the main well(2pts) D. The percentage reduction in the yield of the well if the diameter is reduced by half(3pts) E. Find the discharge of the main well if it only penetrates up to 13m below the water table. (7pts)

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Answer #1

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