Two wells are drilled 710 m apart in a confined aquifer with a thickness of 42 m. The heads in the upgradient and downgradient wells are measured at 68.4 and 57.2 m, respectively. The valley in which the aquifer is located is 1.4 km wide. The aquifer's hydraulic conductivity is 24 m/d, and its effective porosity is 0.22. Find the volumetric flow rate Q, specific discharge q, and velocity v of the water flowing through the aquifer.

P3. 3. Please give the solution and the correct answer.

A well penetrates an unconfined aquifer, with undisturbed water level (ho) equal to 21m. After pumping the well at a constant rate of Q = 0.07 m/s, the steady-state drawdown at distances of 45 m and 110 m from the well are 3 m and 1 m. respectively. Assume the void ratio as 0.2. Compute the hydraulic conductivity of the aquifer. 215.0 m/day what is the porosity 0.16 find the darcy velocity in m/day 69.4 m/day

An 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.

A 30 cm well penetrates 45 m below the static water table. After a long period of pumping at a rate of 1200 lpm, the drawdown in the wells 20 m and 45 m from the pumped well is found to be 3.8 and 2.4 m respectively. Determine the transmissivity (-K*aquifer thickness) of the aquifer. What is the drawdown in the pumped well? [Hint: Use water table depth as aquifer thickness in the case of unconfined aquifer]

A confined aquifer has thickness of 33km and 7km wide. Two observation wells are located 1.2km apart in the direction flow. The head in well one is 97.5m and well two is 89m. i) What is the total daily flow through the aquifer? (Hydraulic conductivity of the aquifer is 1.2m/day) ii) What is the elevation of the potentiometric surface at a point located 0.3 from well one and 0.9 from well two?

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Problem 1. An unconfined aquifer consists of three horizontal layers, each individually isotropic. The top layer has a thickness of 10m and a hydraulic conductivity of 11.6 m/day. The middle layer has a thickness of 4.4m and a hydraulic conductivity of 4.5m/day. The bottom layer has a thickness of 6.2m and a hydraulic conductivity of 2.2m/day. Compute the equivalent horizontal and vertical hydraulic conductivities.

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1. A confined aquifer is recharged by a continuous supply of water from the certain source. The average thickness of the aquifer was determined to be 18 m and the average width is 8 km. The hydraulic conductivity of the aquifer was obtained at 60 m/day and its void ratio is 0.1586. The piezometer heads in two wells 2,145m apart are 128 meters and 188 meters from a common reference datum. Determine: •compute the rate of flow through the aquifer in m3/day •compute the seepage velocity in m/day •compute the time of travel from the head of the aquifer to a point 8 km downstream in days