The hydraulic conductivity of a homogeneous sandy/gravelly aquifer is 3 x 10-2 cm/sec. The hydraulic gradient (groundwater surface slope) of the phreatic (water table) aquifer is 0.009 and the aquifer's effective porosity is 0.28. Calculate the following : The average velocity of dissolved salt (travels at same speed as groundwater). Enter your answer in meters/year, to the nearest whole meter/year.

The hydraulic conductivity of a homogeneous sandy/gravelly aquifer is 3 x 10-2 cm/sec. The hydraulic gradient (groundwater surface slope) of the phreatic (water table) aquifer is 0.009 and the aquifer's effective porosity is 0.28. Calculate the following : The average velocity of dissolved salt (travels at same speed as groundwater). Enter your answer in meters/year, to the nearest whole meter/year.

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter6: Hydraulic Conductivity

Section: Chapter Questions

Problem 6.8P

See similar textbooks

Similar questions

The hydraulic conductivity of an aquifer is 0.005 cm/sec, the hydraulic gradient is 0.02, and the porosity is 0.2. What is the specific discharge, q, in this aquifer? use Darcy's law q=Ki Calculate the velocity at which dissolved salt could move through this aquifer. Assume the aquifer is 5 meters thick (b). What it is its transmissivity? Transmissivity T = Kb aquifer thickness. What is the discharge per unit of distance perpendicular to the groundwater flow? (bq). Use the equation given in the problem statement discharge per unit width = bq .
2. 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 25 m and the average width is 4 km. The hydraulic conductivity of the aquifer was obtained at 40 m/day and its void ratio is 0.3333. The piezometer heads in two wells 1.325 km apart are 65 meters and 60 meters from a common reference datum. Determine the rate of flow in cubic meters per day. 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
Hydrology engineering Q.5. In an artesian aquifer of 8m thickness , a 10cm diameter well is pumped at a constant rate of 100 liter/minute . The steady state drawdown observed in two wells located at 10m and 50m distances from the center of the well are 3m and 0.05m respectively , compute the (Kb) and hydraulic conductivity of the aquifer ?
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 25 m and the average width is 4 km. The hydraulic conductivity of the aquifer was obtained at 40 m/day and its void ratio is 0.3333. The piezometer heads in two wells 1.325 km apart are 65 meters and 60 meters from a common reference datum. Determine the rate of flow in cubic meters per day.
Solve for the ratio of equivalent hydraulic conductivity with the following given: h1 = 2 m h2 = 2.5 m h3 = 1.8 m h4 = 0.9 m k1 = 1.5E-3 cm/sec k2 = 2.2E-4 cm/sec k3 = 1.6E-4 cm/sec k4 = 4.0E-4 cm/sec What is the equivalent coefficient of permeability if the water flows parallel to the layer of soil (KeqH) in cm/sec?
Solve for the ratio of equivalent hydraulic conductivity with the following given: h1 = 2 m h2 = 2.5 m h3 = 1.8 m h4 = 0.9 m k1 = 1.5E-3 cm/sec k2 = 2.2E-4 cm/sec k3 = 1.6E-4 cm/sec k4 = 4.0E-4 cm/sec What is the equivalent coefficient of permeability if the water flows perpendicular to the layer of soil (KeqV) in cm/sec?
The hydraulic conductivity of an aquifer is 0.002 cm/sec, the hydraulic gradient is 0.004, and the porosity is 0.3. The aquifer is 5 meters thick (b). What it is its transmissivity (T) in cm2 / sec. ? Enter your answer to the nearest tenth.
The following data relate to a pump-out test: Diameter of well = 24 cm; Thickness of confined aquifer = 27 m; Radius of circle of influence = 333 m; Draw down during the test = 4.5 m; Discharge = 0.9 m^3/s.What is the permeability of the aquifer in mm/s?
- Estimate the transmissivity of confined aquifer in steady state flow if you know the drawdown is 3 m in piezometer well while 5 m in pumping well. The distance from pumping well to piezometer well is 30 m and radius of pumping well is 2 m. The pumping rate is (5 × 102 m3/d). *
Calculate in units of hours the hydraulic retention time at peak flow in a settling tank based on the following information The settling tank is rectangular with 5 m depth. The surface loading rate is 20 cubic meters per square meter and per day at dry weather flow (DWF). Peak flow is 2 times the DWF.
Hydrology engineering Q3. An unconfined aquifer has a thickness of 30m . A fully penetrating 20cm diameter well in this aquifer is pumped at a rate of 35 liter/ sec. . the drawdown measured in two observation wells located at distance of 10m and 100m from the well are 7.5m and 0.5m respectively .Determine the average hydraulic conductivity of the aquifer . At what distance from the well the drawdown is insignificant?
CALCULATION USING DARCY'S LAW 1) An aquifer has 2 piezometers installed (A and B) and the distance between them is 1km, the hydraulic loads are 850m and 625m respectively. The average hydraulic conductivity of the aquifer is 3.9 x 10-2 m/day and the effective porosity is 25%, calculate how long in years it takes for the water to walk between piezometer A and B.