Ms. Neetu Singh will present her APS as per the detail below:
Date: 15th March 2023
Time: 1700 – 1800 hrs.
Zoom invitation:
https://monash.zoom.us/j/83387461720?pwd=MHpYWXhiZlFkeitVRmNzQ1JQOTRRZz09
Title: Modelling of surface water and groundwater interaction for flood mitigation
and sustainable groundwater recharge
Supervisors:
Prof Pennan Chinnasamy (IIT Bombay)
Prof Ian Cartwright (Monash University)
RPC Members:
Prof. Bellie Sivakumar (IIT Bombay)
Prof. Vannesa Wong (Monash University)
Abstract:
Around one-third of the World's total water demand is satisfied by groundwater, which is thus considered an essential natural water resource. Due to climate change impacts, high-intensity rainfall events are expected to rise, coupled with a decrease in the number of overall rainfall events. Despite the damages caused by a heavy rainstorm, their occurrences can be significant for replenishing water resources. An efficient water management system is needed for these regions to manage flash floods, which can also support groundwater recharge and prevent soil erosion along with vegetation degradation. Globally, countries like India, the USA, Australia, China, Germany etc. are involved in planning and installation of optimal AR and RWH systems. India has been harvesting rainwater to recharge aquifers from past many years. Through this practice, the people have been able to support drinking and irrigation needs in the arid and semi-arid regions of the country.
On the same note, this study has calibrated a physics-based distributed coupled hydrological model, MIKE SHE/MIKE Hydro, to predict streamflow and groundwater level within the Banas basin, a semi-arid basin of Western India. The model's performance has been enhanced by incorporating the detailed distribution of surface roughness, vegetation, soil, and geological parameters. The calibrated distributed model has been able to simulate river discharge and ground water levels satisfactorily. The model performance was found satisfactory in simulating the river discharge and groundwater level with Nash Sutcliffe Efficiency of 0.75 and 0.73 respectively. Analyses of water balance (period 2007-2017) revealed that the developed model could efficiently simulate dynamics of hydrological processes and pave way for further research on potential of storing flash floods. Based on the outcomes of the model and physical characteristics of the basin planning and allotment of water conservation measures (check dams, farm ponds and Holiyas) was done to optimally manage flood water leading to the augmentation of groundwater.