Specific Capacity of Wells in Some Hard Rocks of Karnataka

Authors

  • M. N. Viswanathiah
     Department of Geology, Manasa Gangotri, Mysore-570006
  • J. C. V. Sastri
     Department of Geology, Manasa Gangotri, Mysore-570006

Abstract

Specific capacities of forty wells from the hard rocks of Karnataka-granites (19 to 103 Ipm/m drawdown) ; basalts (13 to 199 Ipm/m drawdown); Bhima limestones (12 to 180 Ipm/m drawdown); laterites overlying basalts (3 to 223 Ipm/m drawndown); Bhima shales (9 to 55 Ipm/m drawdown) and chlorite schists (29 to 135 Ipm/m drawdown) have been determined. The yield of wells in general ranges from 35 to 199 klpd from these tested wells. It is found that in general (i) specific capacity increases with an increase in cross-sectional area of the wells and (ii) specific capacity decreases with increase in recovery time.

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Issue

Volume 19, Issue 9, September 1978

Section

Research Papers

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Published

1978-09-01

How to Cite

Viswanathiah, M. N., & Sastri, J. C. V. (1978). Specific Capacity of Wells in Some Hard Rocks of Karnataka. Journal of Geological Society of India, 19(9), 426–430. Retrieved from https://geosocindia.com/index.php/jgsi/article/view/64369

References

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SUBRAMANIAN, A., (1975) Specificcapacity of wells in hard rocks-A study. Symp, Vol. Hydrology, Roorkee, pp. E 16-19.

WALTON, W. C., (1959) Selected analytical methods for well and aquifer evaluation. Illinois State Water Survey, Urbana., Bull. No. 49,81 p.

WENZEL, L. K., (1942) Methods of determining permeability of water bearing materials, with special reference to discharging-well methods. U.S.G.S. Water Supp., paper no. 887, 192p.

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