A 30 cm well penetrates an unconfined aquifer of saturated depth of 25m. When a discharge of 2100 lpm was being pumped for a long time, observation wells at radial distances of 30m and 90m indicated drawdown of 5m and 4m, respectively. Estimate the coefficient of permeability and the drawdown at pumping well.

Q: A field pumping test was conducted from an aquifer of sandy soil of 4 m thickness confined between…

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Q: A Well with rw=0.12m witch is fully penetrating in confined aquifer with depth m=26.6 m to discharge…

A: Solution

Q: A well of 0.5 m diameter is pumped from confined aquifer at 0.08 m'/s. The draw- down recorded at…

A: Thiems equation and dupits equation is generally used for confined and unconfined aquifier analysis.

Q: 12. A 4 m tall, 1.2 m diameter barrel filled with hardened cement mortar is dropped across a 4 m…

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Q: 1. Three wells each having a diameter of 250mm are installed at the vertices of an equilateral…

A: Given Diameter of well =250mmrwell=2502=125 mm=.125mVertices of an equilateral triangle=18 m∆h=2.5…

Q: 2: A (50 cm) well fully penetrates an unconfined aquifer of saturated depth 80 m. When a discharge…

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Q: A pumping test carried out in a 50 m thick confined aquifer resulted in a flow rate of 600 l/min.…

A: Answer  Based on the given data let us draw the diagram showing given data Calcultions shown in…

Q: observe the head and drawdown of the groundwater. Calculate the steady flow pumping required for the…

A: Given: Confined depth = 40 mh1 = 85.3 mh2 = 90.6 mr1 = 30 mr2 = 100 m

Q: step-drawdown A test was performed on the MX W ber 1980. The radius of the well casing is 5 inches,…

A: solution-  data given - initial pumping rate = 210GPMinitial lequid level , h0 = 231.36 m  At step 1…

Q: (c) A well fully penetrated in a 30 m thick confined aquifer. After a long period of pumping at a…

A: The flow rate is Q=3250 m3/day or Q=0.04 m3/s. The distances are, r1=50 mr2=125 m The drawdowns are,…

Q: Suppose a well 0.30m in diameter has been pumped at a rate of 5,000cu.m/day for a long enough time…

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Q: A field pumping test was conducted from an aquifer of sandy soil of 4 m thickness confined between…

A:

Q: The discharge from a fully penetrating well under steady state pumping in a confined aquifer is…

A: Given  Discharge Q=1000 liter/minute  =1.0 m3/min=0.0166 m3/sec Thickness of Aquifer, B =20m r1=6m…

Q: For steady state flow to a fully penetrating well in a confined aquifer, the drawdown at radial…

A: Solution is attached below as

Q: A 50 dm diameter well gives a discharge of 0.05 m³/sec. Two observations well were made at a…

A: Given data,  q = 0.05 m³/s B = 10 m Diameter of well = 5 meter

Q: The following criteria are needed to reach the "steady state" EXCEPT.. i. The water level in the…

A: The following criteria are needed to reach the "steady state" EXCEPT..  iv. The water level in all…

Q: A 45 cm diameter well penetrates an unconfined aquifer of 30 m thick. Under the steady pumping rate…

A: Diameter of well = 45 cmAquifer thickness = 30 mAt r1 = 10 m : h1 = 25 mAt r2 = 20 m : h2 = 26.5…

Q: UESTION 13 1. A 40 cm well completely penetrates an unconfined aquifer of saturated depth 40 m.…

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Q: The static level of water table in an unconfined aquifer was 35m above the underlying impermeable…

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Q: A 50 dm diameter well gives a discharge of 0.05 m³/sec. Two observations well were made at a…

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Q: (b) Give the characteristics of different formations in which groundwater exists. A fully…

A: Given- Artesian well-discharge-Q=25 l/s=2160 m3/daystorage coefficient S=4.5×10-4transmissivity…

Q: well 12in in diameter penetrate 108 ft below the static water table. After a long period of pumping…

A: h1=108-12=96 fth2=108-7.4=100.6 ftr1=57 ftr2=148 ft To find: (a) transmissivity of the aquifer(b)…

Q: ,. A 20 cm well completely penetrates an unconfined aquifer with k= 1 m/sec and the height of water…

A: Calculation of drawdown at distance 200 m from  well when k= 1 m/sec and well yields at 0.5 m3/s

Q: A community of 15,000 capita and fire demand of 35 L/s for six hours is to be served by a 50 cm…

A: Given data, Hydraulic conductivity K = 100 m/d Radial distance r1 = 150 m Radial distance r2 = 50 m…

Q: A well fully penetrates a 60m thick confined aquifer. After a long period of pumping at a constant…

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Q: f. Assuming a porosity of 18% for the sandstone, what is the seepage velocity for that unit? g. How…

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Q: A 30 cm diameter well penetrates vertically through an aquifer to an impermeable stratum which is…

A: GIven,r=302 cm=15 cmr=0.15 mH=18 mQ=1 m3/minQ=1×24×60=1440 m3/days2=1.50 ms1=2.62 mr2=40 mr1=14 mTo…

Q: A pumping test was made in a sand layer extending to a depth of 16m. The initial groundwater table…

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Q: 26: ( ) A 40 cm well fully penetrated an unconfined aquifer of saturated depth 15 m. when a…

A: We have to estimate the coefficient of permeability of the aquifer and also have to determine the…

Q: A well is being drilled at a vertical depth per of 10,000 ft while circulating a 9.6-lbm/gal mud at…

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Q: A pumping test was carried out in a confined aquifer 16 m thick overlain by an impermeable layer 32…

A: Using formula for confined aquiferQ=2πT(s1-s2)ln(r2r1)

Q: A permeability test was carried out from a well that sunk through a surface layer of loose sand.…

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Q: Yield of a well is 10 lit/sec under a depression head of 4m. The value of specific capacity per unit…

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Q: A field pumping test was conducted from an aquifer of sandy soil of 4 m thickness confined between…

A: We have relation for confined aquifer:T=kHo=Q2πh2-h1lnr2r1

Q: C-A 30-cm diameter well completely penetrates a confined aquifer of permeability 45 m/day and…

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Q: Question- For steady state flow to a fully penetrating well in a confined aquifer, the drawdown at…

A: Given data- Steady-state flow- Drawdown- S1=4.92 m, S2=5.45 m, Radial distance- r1=1.56 m, r2=1.80…

Q: need the answer as soon as possible

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Groundwater Flow

The term groundwater refers to the water which is found beneath the earth's surface. Pores present in the soil and rocks with fractures make a passage for rainwater to enter the earth's surface and deposit as groundwater. The flow nature and direction of groundwater under the earth's surface directly impacts the strength and compressibility of the soil, which reflects its ability to support structural loads.