Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN: 9780134746241
Author: Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher: PEARSON
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Question

1. A diagram representing an unconfined primary sandy aquifer is given below. Use the given information to calculate the hydraulic conductivity of the aquifer. 

2. Calculate the aquifer's transmissivity and flow (velocity) defined in question 1, if the porosity is 0.20.                      3. 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?   

4. 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 the time period? 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?                                

A WL 1 km = 305.37 Q = 21 l/s B WL = 293.45 500 m 12 m
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Transcribed Image Text:A WL 1 km = 305.37 Q = 21 l/s B WL = 293.45 500 m 12 m
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Step 1: Introduction to Darcy's Law
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Step 2: 1. Calculation of hydraulic conductivity of the aquifer
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