Question

Subject name ...engineering hydrology( bsc civil engineering)RN...

Subject name ...engineering hydrology( bsc civil engineering)RN value is 13

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Time Drawdown Time Drawdown (min) (m) (min) (m) 0 0 14 0.63 1.0 0.20 18 0.67 1.5 0.27 24 0.72 2.0 0.30 30 0.76 2.5 0.34 40 0.81 3.0 0.37 50 0.85 4 0.41 60 0.90 5 0.45 80 0.93 6 0.48 100 0.96 8 0.53 120 1.00 10 0.57 150 1.04 12 0.60 180 1.07 TABLE No. 2

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Image transcription text

Q:6 A well penetrating a confined aquifer is pumped at a uniform rate of (2500+RN) m'/day. Drawdowns during the pumping period are measured in an observation well (60+RN) m away; Observation of time and drawdown are listed in the Table No 2. Investigate the Transmissivity and Storativity of this aquifer by Theiss method and Cooper-Jacob method.

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