ELECTRIC ANALOG MODEL STUDY OF AQUIFER IN KRISHNI-HINDON INTERSTREAM REGION, UP, INDIA

Overexploitation of ground water in Krishni‐Hindon interstream region (Lat. 29°05′N‐29°29′N and Long. 77°19′E‐77°32′E) in Uttar Pradesh, India, prompted us to carry out aquifer modeling studies. The area lies in Gangetic alluvial plain. The interconnections in the phreatic aquifer and the lower semiconfined aquifer led to the assumption of a single‐story aquifer for which an R‐C analog model was constructed. The input‐output quantities in the model have been simulated using current/voltage generators and current sinks which are appropriately programmed in time‐domain with the help of wave‐form synthesizers for a realistic representation of the field system. The model study shows that the aquifer can sustain the present output rate of 200 mcm/year without much damage to the ground‐water regime. In another scheme, an annual increase of 5% in exploitation rate, shows deleterious effects on the aquifer. Decreased rainfall/ droughts would worsen the situation. The influence of hydraulic connectivity between the aquifer and the Krishni‐Hindon river system is quite significant. If the present exploitation rate were to continue for 20 years, the annual inflow to the aquifer from rivers is estimated to increase by about 36.0 mem. More hydrogeological data is required for further validation and refinement of the model. Copyright © 1979, Wiley Blackwell. All rights reserved