The discharge from a fully penetrating well under steady state pumping in a confined aquifer is (1000A liters per minutes. The aquifer has a thickness of 20 m. The drawdowns observed at two wells located at 6 and 12 meters from the well are 3.0 m and 2.0 m respectively. Calculate the permeability of the aquifer. Show the data on the neat sketch.
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- Yuri wants to determine the permeability of an aquifer. The aquifer has a test well 300-mm in diameter with two observation wells. A pumping test was conducted for 24 hours with the discharge being held constant at 5,957.2 m^3/day. The first one, 89.85 meters from the test well, has a draw-down of 0.69 meters. The second one, 48 meters from the test well, has a draw-down of 1.2 meters. The static water table penetrates the well to a depth of 25 meters. Determine the radius of influence of the aquifer in meters. Round off to three decimal places.Yuri wants to determine the permeability of an aquifer. The aquifer has a test well 300-mm in diameter with two observation wells. A pumping test was conducted for 24 hours with the discharge being held constant at 5,896.3 m^3/day. The first one, 82.87 meters from the test well, has a draw-down of 0.86 meters. The second one, 44 meters from the test well, has a draw-down of 1.21 meters.The static water table penetrates the well to a depth of 28 meters. Determine the radius of influence of the aquifer in meters. Round off to three decimal places.Yuri wants to determine the permeability of an aquifer. The aquifer has a test well 300-mm in diameter with two observation wells. A pumping test was conducted for 24 hours with the discharge being held constant at 6,162.8 m^3/day. The first one, 83.03 meters from the test well, has a draw-down of 0.92 meters. The second one, 40 meters from the test well, has a draw-down of 1.44 meters.The static water table penetrates the well to a depth of 28 meters. Determine the radius of influence of the aquifer in meters.
- Yuri wants to determine the permeability of an aquifer The aquifer has a test well 300-mm in diameter with two observation wells A pumping test was conducted for 24 hours with the discharge being held constant at 5,608.7 m^3/day. The first one, 86 59 meters from the test well, has a draw-down of 0.81 meters. The second one, 48 meters from the test well, has a draw-down of 1.13 meters. The static water table penetrates the well to a depth of 28 meters. Determine the radius of influence of the aquifer in meters Round off to three decimal places. Activate Windows A Moving to another question will save this response. Go to Settings to actiyate Windows Question 8 of 20 ASUS W R] 7T U KAn unconfined aquifer is 10 m thick and is being pumped so that one observation well placed at a distance 76 m shows a drawdown of 0.5 m. On the opposite side of the extraction well is another observation well 100 m from the extraction well, shows a drawdown of 0.3 m. Assume the coefficient of permeability of 50 m/day. a.) What is the discharge f the extraction well? b.) Suppose the well at 100 m from the extraction well is now pumped. Show with a sketch what this will do to the drawdown. c.) Suppose the aquifer sits on an aquaclude that has a slope of 1/100. Show with a sketch what this will do to the drawdown.Question 19 Yuri wants to determine the permeability of an aquifer. The aquifer has a test well 300-mm in diameter with two observation wells. A pumping test was conducted for 24 hours with the discharge being held constant at 5,696.1 m^3/day. The first one, 89.64 meters from the test well, has a draw-down of 0.72 meters. The second one, 47 meters from the test well, has a draw-down of 1.14 meters.The static water table penetrates the well to a depth of 29 meters. Determine the radius of influence of the aquifer in meters. Round off to three decimal places.
- b) A 30-cm well fully penetrates an unconfined aquifer of saturated depth 25 m. When a discharge of 2100 Ipm was being pumped for a long time, observation wells at radial distances of 30 m and 90 m indicated drawdown of 5 and 4 m respectively. i. Estimate the coefficient of permeability and transmissibility of the aquifer. ii. What is the drawdown at the pumping well? *Ipm = liters per minute *h = H-s, where H = saturated depthb) A 30-cm well fully penetrates an unconfined aquifer of saturated depth 25 m. When a discharge of 2100 lpm was being pumped for a long time, observation wells at radial distances of 30 m and 90 m indicated drawdown of 5 and 4 m respectively. Estimate the coefficient of permeability and transmissibility of the aquifer. What is the drawdown at the pumping well?Angela wants to determine the permeability of an aquifer. The aquifer has a test well 300-mm in diameter with two observation wells. A pumping test was conducted for 24 hours with the discharge being held constant at 6337.3 m^3/day. The first one, 85.91 meters from the test well, has a draw-down of 0.88 meters. The second one, 43 meters from the test well, has a draw-down of 1.49 meters. The static water table penetrates the well to a depth of 29 meters. Determine the radius of influence of the aquifer in meters.
- A 12 inch diameter well was installed in an unconfined aquifer consisting of a 60 foot thick layer of sand. The water table was 15 feet below the ground surface before pumping of the well began. The well was then pumped at a rate of 30 gallons per minute and the water level in the well dropped to 45 feet below the ground surface after a steady-state condition was reached. The radius of well influence is 4000 feet. a) Calculate the permeability of the sand b) Compute and plot the drawdown surfaceA 1m diametee well penetrates vertically through a confined aquifer 30m thick. When the well is pumped at 113 m^3/hr , the drawdown in a well 15m away is 1.8m, in another well 50m away, it is 0.50m. What is the approximate drawdown in the pumped well?The following data relate to a pump-out test: Diameter of well = 24 cm; Thickness of confined aquifer = 27 m; Radius of circle of influence = 333 m; Draw down during the test = 4.5 m; Discharge = 0.9 m^3/s.What is the permeability of the aquifer in mm/s?