Estimation of spatio-temporal variations in water balance components and nutrient transport for Indian River basins using statistical analysis and hydrological modeling
- Dr. Jonathan Goodall (Chair) - ESE
- Dr. Venkataraman Lakshmi (Advisor) - ESE
- Dr. Julianne Quinn - ESE
- Dr. Jim Smith - ESE
- Dr. Todd Scanlon - EVSC
- Dr. Harihar Rajaram - Johns Hopkins University
The Indian subcontinent suffers from a decline in the per capita of water resources and water quality deterioration in the course of recent decades due to exponential population growth. Previous studies for this region have only focussed on understanding trends in water balance components corresponding to a particular watershed or administrative regions like cities or states. However, investigation of linkages between the trends in water balance components and land-cover distribution has not been performed. In India, the majority of the population is reliant on agribusiness which is in turn primarily dependent on water from monsoons. Regions that get lower precipitation than needed experience water deficits which impact agriculture. In addition to this, the increased application of fertilizers in agricultural lands in order to meet the food demands causes largescale nutrient - namely, nitrogen (N) and phosphorous (P), contamination of freshwater resources. This concern is more serious in the river basins like Ganga and Narmada where rapid industrialization and urbanization have intensified river water contamination either due to dumping of untreated sewage or due to non-point source pollution from fertilizers. This proposal outlines the utilization of remote-sensing earth observation datasets to first analyze trends in water balance components of major Indian river basins along with its linkage to land-cover types and then to estimate trends in nutrient transport using hydrological modeling for two river basins – Ganga and Narmada.
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