Estimate the discharge of a well pumping water from a confined aquifer of thickness 20 m with the following data. Distance of observation well from the pumping well = 100 m Drawdown at the observation well after 4 hours of pumping = 1.5 m Drawdown at the observation well after 16 hours of pumping = 2.0 m Storage coefficient, S = 0.0003 Ans. Q = 1611 lpm

Q: Problem (1) Find the quantity of discharge q in meter cube per second per meter width for the…

A: To Determine Quantity of discharge, q in m³/s/m

Q: (a) Determine the pore velocity and magnitude of flow Q [L³/T] through face B. (b) Is the fluid…

A: Given:- Pore velocities through face;            A = 5.00 m/d. m/d            C = 3 m/d            E…

Q: Determine the total seepage loss per meter length of the dam (in m/day/m). Given X = 18 m; Y = 4 m;…

A: From figure:NF=number of flow channels=4ND=number of equipotential depths=10we have…

Q: 2. In an unconfined aquifer, the drawdown is 2m at a radial distance of 9m from a well after two…

A: Given:- The drawdown from the unconfined aquifer = 2 m The radial distance from a well = 9 m  Time…

Q: Problem: Three pipes of different length and diameters connected in series as shown discharges 160…

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Q: Example: A confined Aquifer is pumped by a well at a constant rat. If the Aquifer properties are: D…

A: confined aquifer- there are the type of aquifer which are formed due to the pressure of the pervious…

Q: 2. A 20-cm-diameter confined-aquifer well is pumped at a constant rate of 15 L/s. After 10 days of…

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Q: A well with radius of 0.3 m is drilled in an unconfined aquifer. Initial water table is 30 m above…

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Q: A well is constructed to pump water from a confined aquifer. Two observation wells, MW1 and MW2, are…

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Q: Refer to the cross section of the earth dam shown in the figure. Calculate the rate of seepage…

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Q: a) Estimate the Transmissivity (T) of the aquifer. b) Based on that estimate, what would you expect…

A: Given Data :  Discharge Rate = Q = 2.1 cum/day Radius of well  = 7.5 cm = 0.075m Drawdown at pumping…

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: Q2 Refer to the cross section of earth dam shown in figure ,Calculate the rate of seepage q in…

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Q: falling head hydraulic conductivity test is performed on a sample of soil. The standpipe. having a…

A: Stand pipe diameter = 0.35cm   Area = 0.0961cm2 Time taken = 80 sec H1 = 90cm H2 = 70 cm Length =…

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: A well is installed in a unconfined aquifer. Determine the drawdown (ft) at the well if: the radius…

A: Drawdown: The drop in the level of the water table at a point from its previous or original state of…

Q: The figure below shows the zone of capillary rise within a clay layer above the groundwater table.…

A: Hi! Thank you for the question As per the honor code, We’ll answer the first question(Problem 11)…

Q: The flow net constructed for the dam is shown in the figure below. Taking the coefficient of…

A: Flow net for a dam is given- From the figure-Nf=no. of flow channels=3,Nd=No. of equipotential…

Q: A well is constructed to pump water from a confined aquifer. Two observation wells, MW1 and MW2, are…

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Q: From the given figure. From the e-log p plot, two points were given. p1 = 80 kPa e1 = 0.60 p2 = 150…

A: Given,  P1=80 kpa  ρ1=0.60  P2=150kpa  ρ2=0.40To calculate:-  Liquid  limit ωL=?

Q: 5.0m 2.0 10.0 m 2.5 8.0 m A cross section through an earth dam is shown in the figure. The earth dam…

A: Given, k=7×10-6 m/sec H=8 m a).Rate of flow through the dam q=KS S=D2+H2-D D=0.3L+x+5+10×2L=8×2.5=20…

Q: m 2. Find the maximum amount of w n be pumped from the well in an aqu /day and S = 8 x 10-³ in order…

A: Jfjgpjg gigg jihohohohoghihohohoh  Hobobohoh

Q: A well is constructed to pump water from a confined aquifer. Two observation wells are constructed…

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Q: In an unconfined aquifer, when the steady rate of pumping was 90 m³/hr, the following observations…

A: In an unconfined aquifer having, The steady rate of pumping, Q=90 m3hr=2160 m3day. h1=39 mh2=35…

Q: There is a capillary action that takes place above the groundwater table up to 2.3 m in height.…

A: Due to capillary rise above the ground water table(GWT), the soil above GWT remain saturated but due…

Q: A well is installed in a unconfined aquifer. Determine the drawdown (ft) at the well if: the radius…

A: R=500ft H=95ft

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

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Q: Three reservoirs 1, 2, & 3 have elevations 322 m, 306 m, and 272 m respectively. The 3 pipes have…

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Q: A city well field has 2 wells pumping at the same rate Q. Each well is located 200 m from a straight…

A: The expression of discharge for drawdown of well  is given as q1=q2=2πkbH-hlogR2r H-h=qlogR2r2πkb…

Q: A well is pumped for 20 minutes at a rate of Q=2599 cubic meters per day. After the pumping stopped…

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Q: Q2: A well is located in a 25 m confined aquifer of permeability 30 m/day and storage coefficient…

A: h = 25 m  k = 30 m/day S = 0.005  Q = 1750 L/min or 105 m3/hr t = 20 hours

Q: 1. During the constant head permeability test, the following observations were made: Length = 50cm,…

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Q: 9. A single well pumps water from a horizontally infinite confined aquifer at a rate of 2.1 m³/day.…

A: Aquifers : Aquifers are bodies of rock and/or sediment that contain groundwater. The term…

Q: Q 2: Calculate the (We) and permeability (k), where the data are available: Pi=2500 psi P-2460 psi…

A: Given, Pi = 2500 psi P' = 2460 psi K' = 1200 bbl/month/psi radius of aquifer r0 = 15750 ft radius of…

Q: 2 The pressure-production histpry for the oil field is given below. Estimate bubble-point pressure.

A: Bubble point pressure: The stress where the 1st bubble of gas would seem at a given temperature is…

Q: Two reservoirs are connected through a homogeneous and isotropic aquifer having hydraulic…

A: Given data- Hydraulic conductivity K=25 m/day, Porosity n=0.3, Length L=2 km=2000 m, To Find- The…

Q: Time-drawdown data collected at a distance of 30 m from a well pumping at a rate of 1000 m³/day are…

A: As Given Question contains multi-parts, hence as per the rule, only first three parts will be…

Q: Determine the aquifer characteristics S and T assuming that Eq. (4.28) is valid.

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Q: a. Find Q in [cfs] b. Draw the EGL and HGL for the system. Be precise when drawing so your graphs…

A: Elevation of Reservoir A= 120 ft Elevation of Reservoir B= 100 ft Pipe length of reservoir A=12800…

Q: well of 20 cm diameter fully penetrates a confined aquifer. After a long period of pumping at a…

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Q: The ground conditions at a site figure. The water table at the site which was initially at

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Q: A well of 20 cm diameter fully penetrates a confined aquifer. After a long period of pumping at a…

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Q: A 300-mm diameter well penetrates 27 m below the static water table. After 24 hours of pumping 69…

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Principles of Seepage

In hydrology, when water flows down in a pore or crack of unsaturated soil due to gravity, the deep layer of soil is called seepage. It is the slow movement of water in the soil layer. Seepage is mainly found near hydraulic structures and is responsible for the stability of earthen-type hydraulic structures.