A diagram representing an unconfined primary sandy aquifer is given below. Use the given information to calculate the hydraulic conductivity of the aquifer.
- A diagram representing an unconfined primary sandy aquifer is given below. Use the given information to calculate the hydraulic conductivity of the aquifer. Figure 1
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Calculate the transmissivity and flow (velocity) of the aquifer defined in question 1, if the
porosity is 0.20. - The length and width of an aquifer are 30m and 200m respectively. During winter, the water level drops 5m. How much water is lost from the system if the specific yield is 0.04?
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A confined aquifer is 50 m thick and has a specific storage of 1.0 x 10-5 m-1. Pumping a borehole for 24 hours lowered the piezometric surface by an average of 2.5 m over a circular area with a radius of 100 m. How much water was pumped from the aquifer during this
time period? (2)
It was determined that the transmissivity of the aquifer was 1.0 x 10-5 m2/sec. What is the
hydraulic conductivity of the aquifer?
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The two in-steam measuring stations are 6.4 km apart. Boreholes 1 and 2 are 1200 m apart, while borehole 2 and gauging station B are also 1200 m apart. The elevation data for the gauging stations and the boreholes are in meters above datum level (sea level). The gauging stations displays minimum, maximum and average flow measured in m3/s, while the boreholes display minimum, maximum and average depths to water level in meters below ground level (mbgl). The minimum and maximum flow and water level measurements were not necessarily captured in the same season. Figure 2
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