Controls on sediment load in the Godavari basin, India
This research was aimed to investigate influence of various natural and anthropogenic factors such as lithology, geomorphology, climate, dam construction, land-use changes in spatio-temporal variation in sediment load within the Godavari basin. We applied numerous statistical and modeling approaches. The results indicated that the temporal variation is sediment load is primarily controlled by extensive dam constructions while the spatial variation is related to rainfall distribution.
Funding: UGC-India
Publications: Das, S., Sangode, S.J., Kandekar, A.M., Meshram, D.C., Tarolli, P., 2023. Interrelation between factors controlling sediment yield in the largest catchment of Peninsular India. Journal of Hydrology 622, 129680. https://doi.org/10.1016/j.jhydrol.2023.129680
Das, S., Kandekar, A.M., Sangode, S.J., 2021. Natural and anthropogenic effects on spatio-temporal variation in sediment load and yield in the Godavari basin, India. Science of the Total Environment 845, 157213. https://doi.org/10.1016/j.scitotenv.2022.157213
Streamflow and Sediment load changes in the Godavari basin, India
This research was aimed to investigate water discharge and sediment load changes in the largest catchment in Peninsular India (the Godavari) during the Anthropocene (1965-2015). A total of 57 gauging stations were considered for streamflow and 25 stations for sediment load analysis. Mann-Kendall and Pettitt tests were applied to detect trends and abrupt changes in the time series. The results indicated a declining trend in both streamflow and sediment load. While the streamflow decline is related to variation in precipitation, extensive dam and reservoir construction during the mid-1980s to mid-1990s significantly declined sediment load.
Funding: UGC-India
Publication: Das, S., Sangode, S.J., Kandekar, A.M., 2021. Recent decline in water discharge and sediment load in the Godavari basin, India. Catena 206, 105537. https://doi.org/10.1016/j.catena.2021.105537
Dynamics of the streamflow and sediment load in Peninsular Indian catchments
This research was aimed to investigate water discharge and sediment load dynamics in 12 major Peninsular Indian rivers. Results indicated major rivers in Peninsular India contribute about 1% water and little more than 1% sediment to the global budget. A critical decrease in streamflow in Krishna, Cauvery and Narmada was found in past five decades. More than 40% decrease in sediment load is observed in all rivers after 2000. Construction of numerous dams and reservoirs are having a great role in declining the sediment load in Peninsular Indian rivers.
Funding: None
Publication: Das, S., 2021. Dynamics of streamflow and sediment load in Peninsular Indian rivers (1965-2015). Science of the Total Environment 799, 149372. https://doi.org/10.1016/j.scitotenv.2021.149372