Nonsteady Flow to Nonpenetrating Well

by Rameshwar S. Kanwar, Prof. of Agr. Engrg.; Dept. of Agr. Engrg., Iowa State Univ., Ames, Iowa,
Herandra S. Chauhan, Prof. and Head; Dept. of Agr. Engrg., Iowa State Univ., Ames, Iowa,
Howard P. Johnson, Prof. of Agr. Engrg.; Dept. of Agr. Engrg., Iowa State Univ., Ames, Iowa,


Serial Information: Journal of the Irrigation and Drainage Division, 1979, Vol. 105, Issue 1, Pg. 57-70


Document Type: Journal Paper

Abstract: A nonequilibrium formula has been obtained to predict the nonsteady drawdown distribution near a cavity well discharging from a nonleaky artesian aquifer. A graphical method has been suggested to find the aquifer properties such as specific storage coefficient and hydraulic conductivity. The practical utility of this method has been demonstrated by utilizing the pumping test data for a particular aquifer. The results of the pumping tests are given and the values of hydraulic conductivity and specific storage are compared with the well-known method of Theis. If the values of aquifer properties are found satisfactory from this solution, the use of other methods that require the drilling of fully penetrating wells could be avoided easily which will make the cost of investigation of aquifer properties reasonably small.

Subject Headings: Aquifers | Pumping tests | Hydraulic properties | Water storage | Hydraulic conductivity | Drawdown (hydrology) | Cavitation

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