An unconfined aquifer with an areal extent of 101 km² supplies water to a community with an annual water demand of 650 million gallons. If the aquifer's specific yield, Sy = 0.19, compute the change in water table depth over a year. Annual precipitation for this region is 9", of which 4" recharges the aquifer. All other fluxes can be neglected. dt Note: Sy Adh = ΣjIj(t) — EkOk(t), where I; (t) represent fluxes in, and Ok (t) represent the fluxes out.

An unconfined aquifer with an areal extent of 101 km² supplies water to a community with an annual water demand of 650 million gallons. If the aquifer's specific yield, Sy = 0.19, compute the change in water table depth over a year. Annual precipitation for this region is 9", of which 4" recharges the aquifer. All other fluxes can be neglected. dt Note: Sy Adh = ΣjIj(t) — EkOk(t), where I; (t) represent fluxes in, and Ok (t) represent the fluxes out.

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: Dissolved chloride in a concentration of 500 mg/L is being advected with flowing groundwater at a…

Q: B = 3 m 7.6 m H = 6 m B = 45° a = 30° Impervious layer Given the permeability of the earth dam, k =…

A: Darcy's law states that the flow velocity is directly proportional to the hydraulic gradient (I).…

Q: WATER RESOURCES ENGINEERING: Measurements of a water-balance have been made for a one-year period on…

A: Given: Period of measurement = 1 year Area of lake = 0.8 km2 Precipitation, P = 1400 mm Surface…

Q: How much water must be removed from an unconfined aquifer to lower the water table 2 feet. In your…

Q: During a long drought period the following declines in the water table were recorded in an…

A: Data given Volume of water removed from storage = 5.7385×104 acre feet Find the specific yield of…

Q: The hydraulic conductivity of a homogeneous sandy/gravelly aquifer is 3 x 10-2 cm/sec. The…

Q: Two observation wells penetrating into a confined aquifer are located 1500 m apart in the direction…

Q: BOD 6A waste water stream (flow = 2 m³/s,ultimate = 90 mg/l) is joining a small river (flow = 12…

Q: The lake at point A in the diagram is one of the primary points of recharge for the aquifer.…

A: Given: A model representing watershed in a mountainous area Required: To identify the particle…

Q: The specific yield of an unconfined aquifer is Sy = 0.15. How much, on average, would heads have to…

A: Givrn Sy = 0.15 Area = 2.5km² = 2500000m² Released Volume = 650000m³

Q: A lake with no outlet has a steady state volume of 5 x 1011 m3, the salt concentration in the lake…

A: Given, V = 5 x 1011 m3 C = 100 gm/L Qin = 3 x 109 m3/year Cin = 0.2 gm/L

Q: The following data are given for the Superior Gas Field: Area…

A: given data Area = 230 acres Net productive thickness = 55 ft Porosity = 22% Connate water = 23% Gas…

Q: A 3.2 meter thick silty sand stratum intersects one side of a reservoir. The stratum has a hydraulic…

Q: The aquifer beneath a circular oceanic island has a mean hydraulic conductivity of 100 m d-1. Mean…

A: Given Mean hydraulic conductivity (K0) =100 md-1 Annual recharge W0 = 1 m Year-1 = 0.00273 md-1…

Concept explainers

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.

Question

100%

An unconfined aquifer with an areal extent of 101 km² supplies water
to a community with an annual water demand of 650 million gallons. If
the aquifer's specific yield, Sy = 0.19, compute the change in water table
depth over a year. Annual precipitation for this region is 9", of which 4"
recharges the aquifer. All other fluxes can be neglected.
.
Note: Sy Adh = ΣjIj(t) – EkOk(t), where I, (t) represent fluxes in, and
Ok (t) represent the fluxes out.
dt

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: Determine the given variables

VIEW

Step 2: Determine the given variables

VIEW

Solution

VIEW

Step by step

Solved in 3 steps with 3 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

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

Calculate the steady-state recharge rate, and find how long would it take for dissolved road salt to travel from the water table (z = −5 m) to the bottom of the unconfined aquifer (z = −11 m)? Assume, η = 0.23.
Am acquifer is recharged by precipitation that infiltrates through fertilised fields. The concentration of nitrate in the groundwater is 1.25mg/l. Th4 nitrate is carried by flowing groundwater into a large fish pond the farmer has on her property. The average linear velocity of the groundwater is 0.087m/day and the aquifer porosity is 0.25. The aquifer has an approximate saturated thickness of 2.55m (depth of saturated soil above bedrock). The flow path into the pond is 87wide. What is the mass loading of nitrate into the pond in units of g/day?
An unconfined aquifer has experienced an average water level drop of 11-ft over the past year. If the area of the aquifer is 30,000 ft², the transmissivity is 100(10)-5 ft² and the specific yield is 0.25, what volume S of water (in ft³) has actually been lost or gained (specify) from storage over the year period?
An unconfined aquifer (porosity, n = 0.29) with a specific retention of 0.11 has an area of 130 miles². The water table dropped 5.88 ft during a recent drought. Compute the volume of water lost from the aquifer storage during the drought. Assume there was no appreciable recharge during the drought, and all other fluxes can be neglected.
Estimate the average drawdown over an area where 25, 000, 000 m3 of water has been pumped through a number of uniformly distributed wells. The area is 150 km2 and the specific yield of the unconfined aquifer is 25 %
The figure shows the cross section of a levee that is 500 m long and is underlain by a 2-m-thick permeable sand layer. It was observed that the quantity of water flowing through the sand layer into the collection ditch is 250 m³/day. What is the hydraulic conductivity of the sand layer? Elv. 160 m Levee 1 Elv. 150 m 2 m Ditch 125 m I Impervious O Sand
9.4. A small farm reservoir behaves as two identical CFSTRs in series. Flow into the reservoir consists of runoff from pasture land having an average BOD, of 50 g/m³ and an average flow rate of 0.5 m³/s. Volume of the reservoir is 2.16 x 106 m³. If k = 0.2 d-¹ and k, = 0.35 d-¹ at 20°C, determine the dissolved-oxygen concentration if the water temperature is 20°C, the inflow is anaerobic, and steady-state conditions exist.