Problem 4. Drawdown at a 0.2 m diameter, fully penetrating well, which has been pumping at a rate of 1000 m³/day for a long time that steady state conditions have

been reached, is determined to be 0.70 m. The aquifer is unconfined and 10 m thick. An observation well 10 m away has been drawn down 0.20 m. Determine the hydraulic conductivity of the aquifer. Draw a picture of the system.