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Relative impact of recent climate and land cover changes in the Godavari river basin, India

  • Narendra Hengade
  • T I EldhoEmail author
Article
  • 32 Downloads

Abstract

The Godavari river basin (GRB), the second largest river basin (312,800 \(\hbox {km}^{2}\)) in India, was considered in this study to quantify the relative hydrological impact of recent land cover (LC) changes and rainfall trends using the variable infiltration capacity hydrologic model. Three scenarios, namely, (i) LC change, (ii) climate change and (iii) LC and climate changes, were considered to isolate the hydrological implications of the LC changes from those of climate change. Results revealed that evapotranspiration is predominantly governed by LC change and that small changes in rainfall cause greater changes in the runoff. Although the spatial extent of LC change is higher, the climate change is the dominant driver of hydrological changes within the GRB. Thus, climate projections are the key inputs to study the impact on the river basin hydrology. The results provide insights into the impacts of the climate and LC changes on the basin. The methodology and results of the present study can be further considered for water resource planning within the river basin in view of the changing environment.

Keywords

LC change climate change Godavari river basin macroscale hydrological model 

Notes

Acknowledgements

The authors sincerely acknowledge the Central Water Commission (CWC) for providing streamflow data at various locations in the Godavari river basin. The first author is thankful to Prof. Subimal Ghosh for his suggestions, help and valuable guidance.

Supplementary material

12040_2019_1135_MOESM1_ESM.pdf (1.1 mb)
Supplementary material 1 (pdf 1152 KB)

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Copyright information

© Indian Academy of Sciences 2019

Authors and Affiliations

  1. 1.Department of Civil EngineeringIndian Institute of Technology BombayMumbaiIndia

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