DRP News Bulletin

DRP NB 250923: World Rivers vs Indian Rivers on Rivers Day 2023

HYDRO POWER PROJECTS

Fig. 3 | Schematic diagram explaining the land-atmosphere feedback and changes in monsoon rainfall in response to river-interlinking. The perturbations in the land water management leading from the inter-basin water transfer impact the spatial pattern of rainfall on the distant basins. The intra-basin land-toatmosphere connection happens in the form of soil moisture contributing to the moisture content of the air through evapotranspiration (high evapotranspiration during high soil moisture (SM)) while also causing surface cooling. The supplied moisture by evapotranspiration can lead to recycled precipitation in the same basin or can get transported to faraway regions by the wind, which can then change the precipitation patterns of the region. Evaporative cooling changes the thermal contrast between ocean and land or in between different land regions changing wind patterns and, subsequently, the moisture transport and rainfall.
River Ganga at Phaphamau during the summer season in Prayagraj. (PTI)
This bridge over the Malan River collapsed on 13 July 2023 during flooding of the river (Image: Varsha Singh/The Third Pole)
The statistics include maximum and minimum temperatures of the day, rainfall (if any), and occurrence of cyclones, comets and other meteorological events (Photo by Amulya B/Village Square)
Evolution of the shoreline around the Elwha River mouth, Washington, before, during and after dam removal, 2011–2017. Two large dams were removed from the Elwha River between 2011 and 2014 in the largest dam removal worldwide thus far, releasing more than 20 million tons of sediment downstream. These images show the effects of new sediment depositing around the river mouth and being reworked by waves and currents. Image from Warrick and others, 2019, Scientific Reports. Sources/Usage: Public Domain.

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