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Flow From Wells

The steady flow rate Q can be found for a gravity well by using the Dupuit formula:

Q =[1.36K(H 2-h 2)]/log(D/d)

Q =flow, gal/day (liter/day)

K= hydraulic conductivity, ft/day (m/day), under
1:1 hydraulic gradient

H= total depth of water from bottom of well to free-water surface before pumping, ft (m)

h= H minus drawdown, ft (m)

D= diameter of circle of influence, ft (m)

d =diameter of well, ft (m)

The steady flow, gal/day (liter/day), from an artesian well is given by

Q=[2.73Kt(H -h)]/log(D/d)

t = thickness of confined aquifer, ft (m).

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Kanwarjot Singh

Kanwarjot Singh is the founder of Civil Engineering Portal, a leading civil engineering website which has been awarded as the best online publication by CIDC. He did his BE civil from Thapar University, Patiala and has been working on this website with his team of Civil Engineers.

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