Question 5.5: Pumping well confined aquifer The well in Figure 5.7 has bee...
Pumping well confined aquifer
The well in Figure 5.7 has been pumping at 500 l/h for long enough to achieve equilibrium. The two observation wells are positioned at distances of 25 and 50 m away and the observed drawdown was 5 and 1 m, respectively. For an aquifer thickness of 10 m, compute the hydraulic conductivity, k.
From Equation (5.26):
k=\frac{Q_{w} }{2\pi b}\frac{\ln \left(r_{2}- r_{1} \right) }{s_{1} – s_{2} } (5.26)
k= \frac{\left(500 l/h\right)\cdot \left(1m^{3}/1000 l \right)\cdot \left(1 h/3600 s\right) }{2\pi \left(10 m\right) }\cdot \frac{\ln \left(50 m- 25 m\right) }{5 m- 1 m} =1.8\times 10^{-6} m/sRelated Answered Questions
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