Numerical modeling for Thane creek

Water quality simulation of Thane creek has been carried out to determine the wastewater assimilative capacity of the creek using a two-dimensional numerical model considering organized wastewater discharges. Details of the results of calibration of the model against the observed water quality and hydrodynamic features have been presented. Creek water quality has been simulated for the projected flows and loads for the year 2015 to develop wastewater management strategy. On the basis of monitoring and simulation, it has been observed that with limited flushing capacity the multiple wastewater discharges have deteriorated water quality significantly. Extent of pollution is experienced more in the inner portion of the creek. The projected wastewater flows and loads for 2015 are above the assimilative capacity of the creek and therefore volumetric load in the creek need to be restricted.