Dissolved and suspended nutrient complexity in an urbanized creek-estuary confluence: Implication on water quality alteration.

The Thane Creek-Ulhas estuary confluence region acts as a naturally active infiltration system, crucial for altering water quality in the area and Arabian Sea. Particle-water exchange, hydrodynamics, and anthropogenic discharge influence nutrient transfer and transformation, highlighting the need for effective water quality management in this urbanized ecosystem. We analyzed monthly hydrography and nutrient data in water, and particulates from April 2021 to March 2022, including period of Cyclone Gulab at four locations along the inflow and outflow sectors.

Multivariate assessment of outflow water quality in highly urbanized creek system: implication of natural and anthropogenic processes.

Nutrient source and transport study in tropical creeks adjacent to megacities are sparse on a regional and global scale. High-frequency chemical data collected during 2017-2018 in the Thane creek system, the largest micro-tidal urbanized creek in Asia, were analysed to assess the chemical water quality, with its linkage to different hydrological stages (southwest monsoon, post- and pre-monsoon) and ongoing anthropogenic activities. Cluster analysis indicates typical zonation between creek outflow and nearshore waters with distinctive physicochemical properties.