Need help on some qualititve groundwater flow questions:
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Need help on some qualititve groundwater flow questions:
The figure below shows information from monitoring wells...
An engineer has been asked to investigate illegal pumping of groundwater from an unconfined aquifer. The...
An engineer has been asked to investigate illegal pumping of groundwater from an unconfined aquifer. The maximum withdrawal rate for the well has been set by the State Water Resources Board at 30,000 ft/day. The water table far from the well is 20 f below the surface. The depth to the confining bed is 50 ft. Two observation wells have been installed near the pumping well to assess the groundwater withdrawal rate. The first well is located 100 ft from...
Question 4: (25 marks) The figure below shows a thin aquifer connecting two irrigation canals 1000...
Question 4: (25 marks) The figure below shows a thin aquifer connecting two irrigation canals 1000 m apart and running parallel to each other. The canal to the left has a water surface elevation of 1007 m while that to the right has a water surface elevation of 1008.5 m. The sand aquifer connecting the two canals has a constant thickness of 1.5 m, bottom elevation of 1000m, porosity of 0.3 and a hydraulic conductivity of 250 m/d. The sand...
a. At the POA outlet, what is the stream order of Wendy Run, Watershed II? b....
a. At the POA outlet, what is the stream order of Wendy Run,
Watershed II?
b. Many benthic macroinvertebrates live in Wendy Run. Is that a
Star Wars species or what? Does this indicate the stream is
probably healthy for fish or not? Explain
c. A houselot for sale on the streambank is now a phreatophyte
grove. The NCRS/SCS Soil survey says SWT is 12”. Any problem with
building a house with a basement?
d. A farm applies 30” annually...
Alt Your supervisor at an environmental consultancy frm has provided you with the following map lain...
Alt Your supervisor at an environmental consultancy frm has provided you with the following map lain of North showing the water table contours unconfined sandy aquifer in the Coastai Carelina ----28m- Stream -20m - ----24m 순2m-- ---23A- 5 km Stream gaging station Groundwater monitoring well Vertical Scale 1 cm:100 cm Equipotenlial line with --20m-- hydraulic head in m above sea-level Additional information about the field site is listed below: The ground surface is horizantal and at an elevation of 25...
please answer all the questions written in brown. Groundwater 167 10 Groundwater Topics A. What is...
please answer all the questions written in brown.
Groundwater 167 10 Groundwater Topics A. What is the definition of groundwater? Why is the composition of geyser deposits variable within Yellowstone National Park? How does the total amount of groundwater on Earth compare with that of surface water? B. How do the dynamics of groundwater in humid regions differ from those in arid regions? C. What are two common problems associated with the water table described here? What is hydraulic gradient,...
I. The drawdown data shown below is from a monitoring well located a distance 25 m from the pumpi...
I. The drawdown data shown below is from a monitoring well located a distance 25 m from the pumping well in the direction of a surface water reservoir. The data shows that the confined aquifer is in hydraulic communication with the reservoir. If the average pumping rate is 550 m/d, estimate the transmissivity (8 pts) and storage coefficient (7 pts) of the aquifer Time (d) Drawdown (m) Time (d) 0.012 1 0.020 1.6 0.050 0.09 0.12 0.14 Drawdown (m) Time...
The sediments that formed the Nubian aquifer system are much older than those of the High...
The sediments that formed the Nubian aquifer system are
much older than those of the High Plains aquifer system or the
sediments of Bangladesh. The oldest rocks in the aquifer are
Cambrian in age (541 to 485 million years old). After deposition,
these sediments were buried, compacted, and cemented, and lithified
to form sedimentary rocks. Two cross sections are shown. The sands
that form the sandstones were deposited by rivers and wind in
nearshore (beach) areas. The sandstone is distinguished...
could you help me with this exercise and write down the formula please? 6. A farm...
could you help me with this exercise and write down the
formula please?
6. A farm is to be serviced with irrigation requirements from a 30 cm diameter, fully screened, well I surficial aquifer. At present the water table is approximately 1.0 m below the ground surface and nearly horizontal. The aquifer consists of a sand and gravel material that is 15 m thick and sits on top of an impermeable till layer. Upon pumping the well at a constant...
The Figure below (Figure 3) shows a pipe system with a valve and two reservoirs
QUESTION3 The Figure below (Figure 3) shows a pipe system with a valve and two reservoirs. A pump transports a constant flow rate of Q = 0.1 m3/s of water from reservoir A to reservoir B. At four sections the pipe has bends and the roughness of the pipe is ks = 1.5 mm. The pipe has a diameter D = 34 cm and a total length L = 500 m. The water level in reservoir B is Δh=4.67 m above...
A well was drilled and based on the driller's log, you constructed the vertical profile shown in the figure below. Water was first encountered at 12 m; ultimately, the well was screened betwee...
A well was drilled and based on the driller's log, you constructed the vertical profile shown in the figure below. Water was first encountered at 12 m; ultimately, the well was screened between 17 and 27 meters. Your boss now wants you to design a pump test. Please state briefly your approaches: e.g, what kind of data you need collect during the pump test? What kinds of aquifer properties you may estimate ed on your pump test? How to estimate...
An engineer has been asked to investigate illegal pumping of groundwater from an unconfined aquifer. The maximum withdrawal rate for the well has been set by the State Water Resources Board at 30,000 ft/day. The water table far from the well is 20 f below the surface. The depth to the confining bed is 50 ft. Two observation wells have been installed near the pumping well to assess the groundwater withdrawal rate. The first well is located 100 ft from...
Question 4: (25 marks) The figure below shows a thin aquifer connecting two irrigation canals 1000 m apart and running parallel to each other. The canal to the left has a water surface elevation of 1007 m while that to the right has a water surface elevation of 1008.5 m. The sand aquifer connecting the two canals has a constant thickness of 1.5 m, bottom elevation of 1000m, porosity of 0.3 and a hydraulic conductivity of 250 m/d. The sand...
a. At the POA outlet, what is the stream order of Wendy Run,
Watershed II?
b. Many benthic macroinvertebrates live in Wendy Run. Is that a
Star Wars species or what? Does this indicate the stream is
probably healthy for fish or not? Explain
c. A houselot for sale on the streambank is now a phreatophyte
grove. The NCRS/SCS Soil survey says SWT is 12”. Any problem with
building a house with a basement?
d. A farm applies 30” annually...
Alt Your supervisor at an environmental consultancy frm has provided you with the following map lain of North showing the water table contours unconfined sandy aquifer in the Coastai Carelina ----28m- Stream -20m - ----24m 순2m-- ---23A- 5 km Stream gaging station Groundwater monitoring well Vertical Scale 1 cm:100 cm Equipotenlial line with --20m-- hydraulic head in m above sea-level Additional information about the field site is listed below: The ground surface is horizantal and at an elevation of 25...
please answer all the questions written in brown.
Groundwater 167 10 Groundwater Topics A. What is the definition of groundwater? Why is the composition of geyser deposits variable within Yellowstone National Park? How does the total amount of groundwater on Earth compare with that of surface water? B. How do the dynamics of groundwater in humid regions differ from those in arid regions? C. What are two common problems associated with the water table described here? What is hydraulic gradient,...
I. The drawdown data shown below is from a monitoring well located a distance 25 m from the pumping well in the direction of a surface water reservoir. The data shows that the confined aquifer is in hydraulic communication with the reservoir. If the average pumping rate is 550 m/d, estimate the transmissivity (8 pts) and storage coefficient (7 pts) of the aquifer Time (d) Drawdown (m) Time (d) 0.012 1 0.020 1.6 0.050 0.09 0.12 0.14 Drawdown (m) Time...
The sediments that formed the Nubian aquifer system are
much older than those of the High Plains aquifer system or the
sediments of Bangladesh. The oldest rocks in the aquifer are
Cambrian in age (541 to 485 million years old). After deposition,
these sediments were buried, compacted, and cemented, and lithified
to form sedimentary rocks. Two cross sections are shown. The sands
that form the sandstones were deposited by rivers and wind in
nearshore (beach) areas. The sandstone is distinguished...
could you help me with this exercise and write down the
formula please?
6. A farm is to be serviced with irrigation requirements from a 30 cm diameter, fully screened, well I surficial aquifer. At present the water table is approximately 1.0 m below the ground surface and nearly horizontal. The aquifer consists of a sand and gravel material that is 15 m thick and sits on top of an impermeable till layer. Upon pumping the well at a constant...
A well was drilled and based on the driller's log, you constructed the vertical profile shown in the figure below. Water was first encountered at 12 m; ultimately, the well was screened between 17 and 27 meters. Your boss now wants you to design a pump test. Please state briefly your approaches: e.g, what kind of data you need collect during the pump test? What kinds of aquifer properties you may estimate ed on your pump test? How to estimate...
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