An Introduction to Physical Science
14th Edition
ISBN: 9781305079137
Author: James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres
Publisher: Cengage Learning
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Chapter 23, Problem 8MC
To determine
The upper boundary of the groundwater zone of saturation.
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A non-artesian well is drilled in an aquifer with a fairly horizontal water table. The well (φ = 25 cm) has a discharge of 408 m3 /hr, creating a 250 m wide cone of depression. If the height/depth of the water table is 60 m and the aquifer permeability is 8 m/day, determine the drawdown. Include also diagram or drawing.
True or False
1. If a well is drilled into a confined aquifer, the water can rise above its level in the aquifer because of the extra hydrostatic (fluid) pressure; which is called an artesian system. The water in an artesian system will rise all the way to the ground surface.
2. In areas suffered from surface subsidence, solutions such as pumping water back underground are likely to work.
What is the net water budget for a region where the annual rainfall is 890 mm and the potential evaporation is 635 mm?
A watershed has an area of 9.84 x 102 km2 in a region where the average annual surface runoff is 305 mm. What is the volume of the surface runoff?
Tracer dye is introduced to a sand and gravel aquifer in a gravel pit. The dye appears 28.5 hours later at a spring located 3.8 km away from where the dye was introduced. What is the groundwater flow velocity?
Chapter 23 Solutions
An Introduction to Physical Science
Ch. 23.1 - Prob. 1PQCh. 23.1 - Prob. 2PQCh. 23.2 - Prob. 1PQCh. 23.2 - Prob. 2PQCh. 23.3 - Prob. 1PQCh. 23.3 - Prob. 2PQCh. 23.4 - Prob. 1PQCh. 23.4 - Prob. 2PQCh. 23 - Prob. AMCh. 23 - Prob. BM
Ch. 23 - Prob. CMCh. 23 - Prob. DMCh. 23 - Prob. EMCh. 23 - Prob. FMCh. 23 - Prob. GMCh. 23 - Prob. HMCh. 23 - Prob. IMCh. 23 - Prob. JMCh. 23 - Prob. KMCh. 23 - Prob. LMCh. 23 - Prob. MMCh. 23 - Prob. NMCh. 23 - Prob. OMCh. 23 - Prob. PMCh. 23 - Prob. QMCh. 23 - Prob. RMCh. 23 - Prob. SMCh. 23 - Prob. TMCh. 23 - Prob. UMCh. 23 - Prob. VMCh. 23 - Prob. WMCh. 23 - Prob. XMCh. 23 - Prob. 1MCCh. 23 - Prob. 2MCCh. 23 - Prob. 3MCCh. 23 - Chemical weathering can be determined by analyzing...Ch. 23 - Prob. 5MCCh. 23 - Prob. 6MCCh. 23 - Prob. 7MCCh. 23 - Prob. 8MCCh. 23 - Prob. 9MCCh. 23 - What energy source powers the Earths hydrologic...Ch. 23 - Prob. 11MCCh. 23 - Prob. 12MCCh. 23 - Prob. 1FIBCh. 23 - Prob. 2FIBCh. 23 - Prob. 3FIBCh. 23 - Prob. 4FIBCh. 23 - Prob. 5FIBCh. 23 - Prob. 6FIBCh. 23 - Prob. 7FIBCh. 23 - Prob. 8FIBCh. 23 - Prob. 9FIBCh. 23 - Prob. 10FIBCh. 23 - Prob. 11FIBCh. 23 - Prob. 12FIBCh. 23 - Prob. 1SACh. 23 - Prob. 2SACh. 23 - Prob. 3SACh. 23 - Prob. 4SACh. 23 - Prob. 5SACh. 23 - Prob. 6SACh. 23 - Prob. 7SACh. 23 - Prob. 8SACh. 23 - Prob. 9SACh. 23 - What are the pros and cons of living on a...Ch. 23 - Prob. 11SACh. 23 - Prob. 12SACh. 23 - Prob. 13SACh. 23 - Describe each of the following and state whether...Ch. 23 - Prob. 15SACh. 23 - Prob. 16SACh. 23 - Prob. 17SACh. 23 - Prob. 18SACh. 23 - What are problems associated with groundwater...Ch. 23 - Prob. 20SACh. 23 - Prob. 21SACh. 23 - Prob. 22SACh. 23 - Prob. 23SACh. 23 - Prob. 24SACh. 23 - Prob. 1VCCh. 23 - The Moon has neither an atmosphere nor surface...Ch. 23 - Prob. 2AYKCh. 23 - Figure 23.26a is a photograph of Cleopatras Needle...Ch. 23 - Prob. 4AYKCh. 23 - Prob. 5AYKCh. 23 - Suppose that you collected a bucket of water from...
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- A confined aquifer at a depth of 34.8 m is encountered during the drilling of a water well. The surface elevation of the well is 267.4 m. What must the minimum static groundwater elevation be in this well for it to be considered artesian?arrow_forward12.. A dissolved contaminant with a concentration of 20 µg/mL is being advecte d with flowing groundwater at a velocity of 0.45 m/day in an aquifer which has a porosity of 25%. Groundwater from the aquifer discharges into a nearby strea m. What is the mass flux of the contaminant into the stream if the aquifer is 2.0 metre thick and 125 m wide where it discharges into the stream?arrow_forward2) Given: Saturated hydraulic conductivity – 1.42 m/day Depth of unconfined aquifer -42 m a) What is the transmissivity of the aquifer? (m?/day) 3) What is the difference between the depth to groundwater in a monitoring well and the potentiometric surface? 4) From the equipotential grid below, draw in the flow lines starting at 1,2,3,and 4. Water table 2 4arrow_forward
- Tracer dye is introduced to sand and gravel aquifer in a gravel pit. The dye appears 28.5 hours 3.8 km away from where the dye was introduced. What is the groundwater flow velocity?arrow_forwardDerive the hour unit hydrograph from the following data of effective rainfal and direct runoff. Area of watershed is 24.5 km. Time (hrs) Effective rainfall (mm) 2. 3. 22 28 16 Time (hrs) Direct runoff (m/sec) 4.4 3 50.8 4 6. 18.8 59.8 36.4 8.arrow_forwardA glacier is receding at a constant rate of 4.3 cm per day. After 35 years, by what approximate length has the glacier receded? 550 meters 1.5 meters 130 meters 55 kilometers 44 metersarrow_forward
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- 2/ The estimated mass from an instantaneous spill of benzene was 214 kg over 2m of the one dimension aquifer. the aquifer has hydraulic conductıvity 3*10 cm/sec, hydraulic gradient of 0.002, and the effective porosity 0.17. the longitudinal dispersion coefficient of the aquifer is 9*10* m2 /day. Calculate the maximum concentration at one year. Then, calculate the benzene concèntration after one year at two standard deviation on either side of the center mass of the plume.arrow_forwardRates of tectonic uplift can be determined from the age and elevation of stream terraces, flat-surfaced deposits of streambed sediment that represent ancient floodplains. By dating the age of the terraces and measuring the elevation of the terrace, the uplift rate is the difference in elevation of the terraces divided by the difference in ages of the terraces. A terrace at 164 m elevation is 101,000 years old while another terrace at 111 m is 24,800 years old. What is the ratearrow_forwardThe rate at which the temperature increases with depth is called the geothermal gradient. What is the geothermal gradient in a tectonically stable region where the temperature is 119° C at a depth of 5.0 km? (Assume a surface rock temperature of 14° C.)arrow_forward
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