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Methodology  Groundwater Modeling
Mathematical modeling is a powerful tool in groundwater resource management. Once the aquifer geometry and its characteristics are known, with the available boundary conditions, CGWB undertakes groundwater modeling. The mathematical modeling is initiated at different scales to:
Project future scenarii and predict future groundwater conditions based on the present and projected demand.
Understand surface water - groundwater interactions and interactions within the aquifer systems under varied water table/piezometric head and aquitard conditions.
And thus consolidate the aquifer-related problem for theoretical as well as management programmes.
This may help minimize inter-aquifer water quality deterioration in arsenic contaminated areas, assess sustainable groundwater abstraction levels, draw up strategies for drinking water supply, agricultural and industrial water management, and in general improve aquifer-based groundwater management.
Models, developed for each aquifer unit / watershed area, provide a strong base for the aquifer management group to adopt the strategies recommended. The model works as a decision support tool for managing the aquifer unit with regular / online inputs by the management group itself. The model is to be refined on an yearly basis after analyzing the aquifer response outputs. The response matrix of the aquifer unit is to be monitored closely by a designated committee to advise the identified stakeholders in taking corrective measures at appropriate time. Using the model for aquifer management aims at maximizing the aquifer unit’s yield, minimizing the drawdowns and declining trends and maximizing the benefits.
Mathematical modeling requires a number of static and dynamic parameters related to aquifers to be simulated. In all the project areas, CGWB is ascertaining that the data required for modeling are collected and generated adequately in time, so that mathematical modeling can be initiated.