3. A single well pumps water from a horizontally infinite confined aquifer at a rate of 2.1m³/day. The well-bore diameter is 15 cm, and steady-state drawdown at the pumping well is 1.1m. Drawdown at a monitoring well located 97 m away is measured at 0.14 m.a) Estimate the Transmissivity (T) of the aquifer.b) Based on that estimate, what would you expect the drawdown to be 54 m from thepumping well?c)How would you estimate the Hydraulic Conductivity (K) from the information you have?What other information would you need?

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

a) Estimate the Transmissivity (T) of the aquifer. b) Based on that estimate, what would you expect the drawdown to be 54 m from the pumping well? c) How would you estimate the Hydraulic Conductivity (K) from the information you have? What other information would you need?

a) Estimate the Transmissivity (T) of the aquifer. b) Based on that estimate, what would you expect the drawdown to be 54 m from the pumping well? c) How would you estimate the Hydraulic Conductivity (K) from the information you have? What other information would you need?

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Q: Determine the basin size (length, width, and depth in ft) and the power input (hp) required given…

Q: Use the information provided and the figure below to determine the hydraulic gradient for the entire…

Q: Question 2 Refer to Figure 2 below. If the water surface elevation in reservoir B is 110 m, what…

Q: The average hydraulic conductivity of the stratum is----- -----meters/day.

A: Step 1: Given Hydraulic conductivity is a function of depth. At the surface hydraulic conductivity…

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: A 2 ft diameter well penetrates vertically through a confined aquifer 50 ft thick. When the well is…

A: The flow of fluid includes movement of an unbalanced fluid. As long as unequalled forces are in…

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: ►Find excess water pressure at point B at depth 6 ft after 2000 days given Cv = 0.022 ft^2/day. (In…

A: Consolidation is the compression of the soil mass due to the expulsion of water from the voids under…

Q: The US Geological Survey wants to know how long it will take for a contaminant in an aquifer to…

A: Data Given :- Hydraulic Gradient, i = 0.0015. Hydraulic Conductivity, k = 1000 m/day.Porosity, n =…

Q: A town is planning to develop a new water supply from an aquifer. Two observation wells installed…

A: Calculation of total ground water discharge/ volumetric flow rate:

Q: A fine sand sample is placed into a permeameter that supplies a constant head of 100 cm of water.…

Q: A 4-cell aquifer model is conceptualized in the figure below. Cell 1 River Cell 2 Cell 3 Cell 4 (a)…

A: width of the aquifer strip = 3 km length of each cell = 5km recharge rates - aquifer strip in cell…

Q: 2. 9 Problem: From the figure shown: m. 3. h of dis Es of /m3 the h =1.5tm 1.5m the G=2:68 aj 2.5m…

Concept explainers

Field applications of hydraulic conductivity

Hydraulic conductivity is one of the hydraulic properties of soil defined as a measurement of the ability of a porous medium to permit water movement or fluid flow through it. It is denoted by the letter K. It is influenced by the density and viscosity of the fluid. It is also called permeability. Hydraulic conductivity is defined as the ratio of velocity to the hydraulic gradient. The different methods used to determine the hydraulic conductivity are laboratory methods (constant head permeability tests and falling head tests), in-situ field methods (pumping in and pumping out tests), small scale field tests (infiltration tests and slug tests), and indirect methods such as estimation from grain size, consolidation test data, and horizontal capillary test. The pedotransfer function (PTF) method is a specific empirical estimating approach employed in the soil sciences is also used to determine the hydraulic conductivity of the soil.

Question

3. A single well pumps water from a horizontally infinite confined aquifer at a rate of 2.1
m³/day. The well-bore diameter is 15 cm, and steady-state drawdown at the pumping well is 1.1
m. Drawdown at a monitoring well located 97 m away is measured at 0.14 m.
a) Estimate the Transmissivity (T) of the aquifer.
b) Based on that estimate, what would you expect the drawdown to be 54 m from the
pumping well?
c)
How would you estimate the Hydraulic Conductivity (K) from the information you have?
What other information would you need?

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

Step 2

Step 3

Step 4

Step by step

Solved in 4 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Field Applications of Hydraulic Conductivity

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.

Similar questions

A confined aquifer of 15 m constant thickness is sandwiched between two aquicludes as shown in the figure (not drawn to scale) 55.2 m BT Peizometer P Reference Datum Aquiclude Piezometric Surface Aquiclude Peizometer Q L = 2500 m 34.1 m ונטוב SOM The heads indicated by two piezometers P and Q are 55.2 m and 34.1 m, respectively. The aquifer has a hydrau- lic conductivity of 80 m/day and its effective porosity is 0.25. If the distance between the piezometers is 2500 m, the time taken by the water to travel through the aquifer from piezometer location P to Q (in days, round off to 1 decimal place) is
Determine the elevation difference, Ah, between the water levels in the two open tanks shown in the figure below. Assume SG = 0.92. Δη= m 1m SG. Water 0.4 m ↑ Ah
Question 1 The discharge from a fully penetrating well under steady state pumping in a confined aquifer is (1000 two wells located at 6 and 12 meters from the well are 3.0 m and 2.0 m respectively. Čalculate the permeability of the aquifer. Show the data on the neat sketch. liters per minutes. The aquifer has a thickness of 20 m. The drawdowns observed at
12 Determine the quantity of seepage under the dam cross section shown in m3/s/m if the soil has hydraulic conductivity, k=0.0001 meter cube per second. Note the numbers in the figure from left to right are:2.0m, 1.8m, 2.4m and 8.0 m, respectively. 2.00m 8.00 m 1.80 m Datum 12.40m 777 Enter your answer
DETERMINE: a. Rate of seepage into the well during pumping
- once answered correctly will UPVOTE!!
Environmental Enginee... During a recuperative test, the water is pumped out 2.8 m initially and allowed to recuperate. It was observed that the water level rises by 1.45m in 80 minutes. If the diameter of the well is 3.45m, determine by what amount the diameter need to be increased to get a yield of 5 litre per sec under a depression head of 1.65m.