Recharge process and aquifer models of a small watershed |
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| Authors: | A SRINIVAS B VENKATESWARA RAO V V S GURUNADHA RAO |
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| Institution: | 1. Water Resources Department, School of Environment, Water Resources and Remote Sensing , Jawaharlal Nehru Technological University , Hyderabad, 500 018, India;2. National Geophysical Research Institute , Hyderabad, 500 007, India E-mail: postmast@csngri.ren.nic.in |
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| Abstract: | Abstract Kanchanapally watershed covering an area of about 11 km2 in Nalgonda district, Andhra Pradesh, India is located in granitic terrain. Groundwater recharge has been estimated from a water balance model using hydrometeorological data from 1978–1994. The monthly recharge estimates obtained from the water balance model formed input for the groundwater flow model during transient model testing. The groundwater flow model has been prepared to simulate steady state groundwater conditions of 1977 using the nested squares finite difference method. The transient groundwater flow model has been tested during 1977–1994 using the estimated recharge values. The present study helped verify the usefulness of monthly recharge estimates for accounting dynamic variations in recharge as reflected in water level fluctuations in hydrographs. |
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