Recharge systems for protecting and enhancing groundwate

434
TOPIC 3
Modelling aspects and groundwater hydraulics
Through initial sensitivity analysis, it was observed that the water levels in the Sujas aquifer were most sensitive to
the recharge rate, the horizontal hydraulic conductivity and the bottom layers.
In case of any disorder in calibration was observed, the system of conceptualization was repeated by additional data
collection studies and appropriate parameters values after many iteration processes. Judicial adjustment of parameters
in the calibration process was done therefore primary condition was considered with regard to water levels
in each node. In unsteady condition the parameter like storage coefficient were computed for each cell and separate
maps were prepared after adjustment of its values. The model does a good matching of observed water-level
fluctuations in some areas and no proper matching of water-level fluctuations in other areas. Differences may be due
to the influence of local-scale conditions not represented in the regional model or errors in parameterization of the
aquifer data.
REFERENCES
Anderson,M.P. and W.W.Woesner (1992). Applied Grounwater modeling.Academic press San Diego, p. 381.
Chiang, W.H., and Kinzelbach, Wolfgang (1998). Processing Modflow - A simulation system for modeling groundwater
flow and pollution: software manual, p. 325.
Franklin W.Schwartz and Hubao Zhang (2003). Fundamentals of groundwater. John Willey and sons Publication,
p. 584.
Harbaugh A.W. and M.G.MCDONALD (1996). User documentation for modflow-96 an update to the U.S. Geol. Surv.
Modular finite difference groundwater flow model. Open file report 96-486, p. 220.
Hill, M.C. 1992. Preconditional Conjugate-Gradient 2(PCG2), Acomputer programe for solving groundwater flow
equations, U.S. Geol. Surv. Water Resource. Investigations Report 90-4048, 43 pp.
Huyakorn and pinder,(1983). Computational methods in subsurface flow. Academic press. New York, pp. 473.
Kruseman, G.P., and de Ridder, N.A. (1994). Analysis and evaluation of pumping test data, second edition: International
Institute for Land Reclamation and Improvement, The Netherlands, p. 377 .
Irwin Remson (1979). Introduction to groundwater mathmatical models.International seminar on groundwater
resources management. University of Roorkee, India.
McDonald. M.G., and A. W. Harbaugh (1988). A modular three dimensional finite difference groundwater flow
model. USGS Techniques of water-Resources investigations, Book 6, A1.
Neven Kresic (1997). Quantitative Solutions in HydroGeology and Ground water Modeling. Lewis publishers.
Zheng, C.,= and P.P. Wang (1995). Applied Contaminant transport modeling. Internl.Thomson Pup.Co., New York,
p. 440.
ISMAR 2005 ■ AQUIFER RECHARGE ■ 5th International Symposium ■ 10 –16 June 2005, Berlin