scholarly journals The Different Characteristics of Aquifer Parameters and Their Implications on Pumping-Test Analysis

Ground Water ◽  
1997 ◽  
Vol 35 (1) ◽  
pp. 25-29 ◽  
Author(s):  
J. J. Jiao ◽  
C. Zheng
1966 ◽  
Vol 92 (3) ◽  
pp. 69-70
Author(s):  
Kamal F. Saad ◽  
Ahmed Shukry ◽  
Aly Baligh

Ground Water ◽  
1998 ◽  
Vol 36 (3) ◽  
pp. 427-433 ◽  
Author(s):  
Michael G. Trefry ◽  
Colin D. Johnston
Keyword(s):  

1993 ◽  
Vol 30 (5) ◽  
pp. 781-800 ◽  
Author(s):  
R. Kerry Rowe ◽  
Prebaharan Nadarajah

The evaluation of the bulk vertical hydraulic conductivity of an aquitard based on its response to the pumping of an adjacent aquifer is examined using Biot's theory. Consideration is given to the errors in interpretation of the results of pumping tests which arise as a result of the time lag associated with different types of piezometers as well as the length of the piezometer. Factors to allow for correction of these errors are presented. Although these factors are originally developed for isotropic aquitards, they can be used for anisotropic aquitards with appropriate modifications described in the paper. A comparison is made between the results obtained from diffusion theory (as assumed in the development of techniques currently used in practice) and the more rigorous Biot's theory. The application of the technique is illustrated by two examples. Key words : hydraulic conductivity, field test, analysis, pumping test, piezometers, anisotropy.


2020 ◽  
Vol 10 (11) ◽  
Author(s):  
Ratnakar Dhakate

Abstract Knowledge of aquifer characteristics is essential for groundwater development and management studies. Detailed hydrological studies were carried out in a granitic terrain consisting of different geomorphologic units to resolve the coverage, performance, and characteristics of the aquifer parameters through the application of the pumping test method. An interpretation was performed by different methods, viz., Theis, Jacob, Hantush, and Rushton and Redshaw (numerical finite difference method) to ascertain the aquifer parameters. These parameters are vital for future groundwater development and management studies. Transmissivity (T) values estimated by Theis method range from 3.83 to 436 m2/day; 3.77 to 718 m2/day; and 16 to 160 m2/day, by Jacob method it ranges from 3.90 to 436 m2/day; 3.73 to 769 m2/day; and 17.3 to 152 m2/day, by Hantush method it ranges from 1.63 to 189 m2/day; 0.53 to 755 m2/day; and 19.3 to 118 m2/day, while by numerical method it ranges from 3 to 455 m2/day, 3 to 700 m2/day, and 17 to 148 m2/day in pediplain with moderate weathering (PPM), pediplain with shallow weathering (PPS), and buried pediplain with shallow weathering (BPPS) geomorphologic units, respectively. Similarly, a radius of influences ranges from 9.75 to 1391.0 m; 8.0 to 698.09 m, and 380.78 to 433.76 m in PPS, PPM, and BPPS geomorphologic units, respectively. The aquifer parameters obtained by the pumping tests were correlated with the structural features and different geomorphologic units. It was found that these parameters have wide variations within each geomorphologic feature. The radius of influence of each test well was calculated and compared with the in situ measured discharge of various wells within the area. The high values of transmissivity (T) are attributed to aquifer controlled by fractured zone in the area.


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