A confined aquifer slopes gradually from 12 m to 8 m thickness. The slope of piezometric surface is 0.25 m per kilometer. If the hydraulic conductivity of the aquifer is 25 m/day, how much water flows through the aquifer from its width of 2.5 km?
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A: Given:- The thickness of the confined aquifer = 45 m Specific storage = 3×10-5 m-1 The piezometric…
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A: Option D is correct
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A: step 1-
Q: A confined aquifer has a thickness of 105m and an area of 11x10 9 m 2 . Over a period of 35 years,…
A: thickness of aquifer =105m area of aquifer = 11*10^9 m2 after 35 year aquifer supplies= 100*10^6…
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A: Diameter of well = 0.4 m ⇒Radius of well ,rw = 0.2 m B = 25 m K = 12 m/day R = 1000 m H0 = 80 m Hw…
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Q: A well pumps at a constant rate of 15 L/s in an unconfined coastal aquifer. The aquifer is 40 m…
A: Q =15L/s = 0.015*602*24 = 1296m3/day T = 68m/day A(area) = Q/T =1296/68…
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Q: The pressure heads of an aquifer at 2000 m are 55.5 m and 36 m. The hydraulic conductivity of the…
A: Length = L = 2000m Pressure heads - h1 = 55.5m h2 = 36m Hydraulic conductivity = K = 76m/day…
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A: CASE OF UNCONFINED AND THEMEN ANALYSIS
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A: It is series' connection so we know K equivalent
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A: Schematic diagram of the given problem:
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A: Figure is as shown in the question
Q: An confined aquifer has a thickness of 30m. a fully penetrating 20cm diameter well in this aquifer…
A: Q=πkh22-h12lnr2r1Q=35 litsec=35×10-3 m3sec35×10-3=π×k×29.52-22.52ln10010k=7.0475×10-5 msec Hydraulic…
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A: Aquifer dimeter=50 cm, Hydraulic conductivity=0.8 m/day, Piezometric head=300 m, Radius of…
Q: A confined aquifer shown has hydraulic conductivity of 52 m/day with void ratio of 0.282. The…
A: Distance=5.2km Void ratio=0.282 Hydraulic conductivity=52m/day
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Q: A confined aquifer has a depth of 12 ft and a hydraulic conductivity of 125,000 ft/yr. If…
A: Specific dischsarge isV=-k×ΔhL Flow rate per unit width:q=-k×ΔhL×b
Q: The specific storage of a 41-m thick confined aquifer is 5*10-5 m-1 . How much water would the…
A: Given data:- Thickness of confined aquifer (b) = 41 m Specific storage (Ss) = 5×10-5 m-1 Area (A) =…
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Q: A confined aquifer has a source of recharge as shown in the figure. The hydraulic conductivity of…
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Q: A tube-well of 20 cm diameter fully penetrates a horizontal, homogeneous and isotropic confined…
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Q: A certain 20 m thick sandy confined aquifer has a k of 0.024 cm/s and a void ratio of 0.91. If the…
A: To find the time -
Q: A confined aquifer is 25 m thick and 2 km wide. Two observation wells located 2 km apart in the…
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Q: An unconfined aquifer is known to be 32 m thick below the water table. A constant discharge of 2…
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- Given: velocity of flow = 0.0375 m/s coefficient =0.05 m/s porosity p =48% slope S = 3/4 Given the coefficient =0.05 m/s and porosity p =48%, find the transmissibility (T) in m/s per unit m, if the aquifer width is 1.2 m.A certain 20 m thick sandy confined aquifer has a k of 0.024 cm/s and a void ratio of 0.91. If the hydraulic gradient is 0.0065, how much time would be required for water to travel 1000 m through this aquifer?The specific storage of a 41-m thick confined aquifer is 5*10-5 m-1. How much water would theaquifer produce if the piezometric surface is lowered by 11 m over an area of 1.5 km2?
- A confined aquifer is 18.5 m thick. The hydraulic head drops 2.99 m between two wellsthat are 823 m apart. If the hydraulic conductivity of the aquifer is 4.35 m/d, how many cubicmeters of water are moving through the aquifer per unit width?For a typical sand and gravel aquifer, estimate the one-year travel distance for water when the hydraulic gradient is 0.0003 m/m.An unconfined aquifer is known to be 32 m thick below the water table. A constant discharge of 2 cubic meters per minute is pumped out of the aquifer through a tube well till the water level in the tube well becomes steady. Two observation wells at distances of 15 m and 70 m from the tube well show falls of 3 m and 0.7 m respectively from their static water levels. Find the permeability of the aquifer (mm/s).
- A confined aquifer has a constant thickness of 34 m and is stratified between two observation wells as shown in the following figure. Given the piezometric surface elevations on the figure, determine the flow per unit width of the aquifer. What is the equivalent hydraulic conductivity in the direction of the flow/ for the portion of the aquifer between the two observation wells?An unconfined aquifer is known to be 32 m thick below the water table. A constant discharge of 2 cubic metres per minute is pumped out of the aquifer through a tubewell till the water level in the tubewell becomes steady. Two observation wells at distances of 15 m and 70 m from the tubewell show falls of 3 m and 0.7 m respectively from their static water levels. Find the permeability in mm/s of the aquifer. a.3.28 x 10^-1 b.4.68 x 10^-1 c.2.58 x 10^-1 d.1.18 x 10^-1Given the coefficient k =0.05 m/s and porosity p = 48%, find thetransmissibility (T) in m/s per unit m, if the aquifer width is 1.2 m.Formula: - It is the flow rate per day thru a unit areaunder a unit hydraulic gradient For an aquifer with thickness, Band width, X:T = K*B and Ag = BXThus: Q = (T*X*S)
- Water flows through three confined aquifers in a series as shown below. The piezometric head in the observation wells are 166.4 and 86.6 ft. Determine the flowrate per unit width within the aquifer. Determine the headloss within each component of the aquiferAn unconfined aquifer is known to be 32 m thick below the water table. A constant discharge of 2 cubic metres per minute is pumped out of the aquifer through a tubewell till the water level in the tubewell becomes steady. Two observation wells at distances of 15 m and 70 m from the tubewell show falls of 3 m and 0.7 m respectively from their static water levels. Find the permeability in mm/s of the aquifer.Tacarigua aquifer in Trinidad is a medium to coarse grained sand aquifer. It is 12.19 thick and 1.61 km wide. This aquifer is covered by a confining unit of Quaternary clay deposit about 13.72 m thick beginning from the land surface. The difference in the hydraulic head between two observation wells 1.524 m apart is 3.05 m. The hydraulic conductivity of the aquifer is 20.44 m/d. What is the quantity of the ground water passing through a cross-section of this aquifer?