The wells shown below are in a leaky confined aquifer. The aquifer has a hydraulic conductivity of 30 ft/d, saturated thickness of 45.0 ft, and storage coefficient of 0.00080. The aquitard above has a thickness of 8.0 ft and vertical conductivity of 0.45 ft/d. Well A was turned on at noon Sunday with a flow rate of 150 gpm. Well B was turned on at noon Tuesday with a flow rate of 200 gpm. Find the total drawdown in ft at the observation well C at noon Thursday. 150 ft 350 ft B 150 ft

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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The wells shown below are in a leaky confined aquifer. The aquifer has a hydraulic conductivity of 30 ft/d, saturated thickness of 45.0 ft, and storage coefficient of 0.00080.
The aquitard above has a thickness of 8.0 ft and vertical conductivity of 0.45 ft/d. Well A was turned on at noon Sunday with a flow rate of 150 gpm. Well B was turned on at
noon Tuesday with a flow rate of 200 gpm. Find the total drawdown in ft at the observation well C at noon Thursday.
150 ft
350 ft
150 ft
Transcribed Image Text:The wells shown below are in a leaky confined aquifer. The aquifer has a hydraulic conductivity of 30 ft/d, saturated thickness of 45.0 ft, and storage coefficient of 0.00080. The aquitard above has a thickness of 8.0 ft and vertical conductivity of 0.45 ft/d. Well A was turned on at noon Sunday with a flow rate of 150 gpm. Well B was turned on at noon Tuesday with a flow rate of 200 gpm. Find the total drawdown in ft at the observation well C at noon Thursday. 150 ft 350 ft 150 ft
Expert Solution
Step 1

Data given

Civil Engineering homework question answer, step 1, image 1

k = 30 ft/d

S = 0.0008

b = 45 ft

b' = 8 ft

k' = 0.45 ft/d

QA = 150 gpm = 28 875 ft3/day

QB = 200 gpm  = 38 500 ft3/day

Find:

Total drawdown in ft at observation well C at noon Thursday

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