Pump Test Analysis of Confined Aquifer
Publication: Journal of Irrigation and Drainage Engineering
Volume 116, Issue 1
Abstract
The storage coefficient and transmissivity are important aquifer parameters that are useful in assessing the ground‐water potential of an aquifer. For a nonleaky confined aquifer, these parameters can be determined with the help of a pump test. The present practice of aquifer parameters determination uses approximations of well function valid for small arguments only. In the absence of a full‐range equation for the well function, it is not possible to utilize the entire set of pump test data. In this paper a high accuracy expression for the well function valid for the entire range of its argument has been developed. The present practice of parameter estimation uses least square method. This gives undue importance to large errors. A criteria function capable of ignoring large observational errors has been suggested to replace the least square method. Minimizing the cumulative criteria function, the aquifer parameters can be estimated with a high degree of accuracy. A criteria function capable of ignoring large observational errors also has been developed. Minimizing the cumulative criteria function, the aquifer parameters can be estimated with a high degree of accuracy.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Chander, S., Kapoor, P. N., and Goyal, S. K. (1981). “Analysis of pumping test data using Marquardt algorithm.” Ground Water, 19(3), 275–278.
2.
Chow, V. T. (1952). “On the determination of transmissivity and storage coefficients from pumping test data.” Trans., American Geophysical Unions, 33, 397–404.
3.
Goyal, S. K. (1984). “New approach for analysis of aquifer test data.” J. Irrig. and Drain. Engrg., ASCE, 388–392.
4.
Jacob, C. E. (1946). “Radial flow in a leaky artesian aquifer.” Trans., American Geophysical Union, 27(2), 198–205.
5.
McElwee, C. D. (1980). “Theis parameter evaluation from pumping tests by sensitivity analysis.” Ground Water, 18(1), 56–60.
6.
Sharma, H. D., and Chawla, A. S. (1977). “A manual on ground water and tube wells.” Report No. 18, Central Board of Irrig. and Power, New Delhi, India, 44–49.
7.
Theis, C. V. (1935). “The relation between the lowering of the piezometric surface and the rate and duration of discharge of a well using ground water storage.” Trans., American Geophysical Union, 16, 519–24.
8.
Walton, W. C. (1970). Ground water resources evaluation. McGraw Hill Co., New York, N.Y.
Information & Authors
Information
Published In
Copyright
Copyright © 1990 ASCE.
History
Published online: Jan 1, 1990
Published in print: Jan 1990
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.