What is in news : Manjhi river in dharmasala, Himachal has created damage to the city due to overflow caused by a flashflood

MAHITI FOR MAINS

What are Flash floods:

• Rapid flooding of low-lying areas: washes, rivers, dry lakes and depressions.
• Caused by heavy rain associated with a severe thunderstorm, hurricane, tropical storm, or meltwater from ice or snow flowing over ice sheets or snowfields
• Glaciers as a cause of flashfloods – When glaciers retreat due to rising temperatures, the snow melts but the debris remains. This debris aids in the formation of lakes. More lakes lead to more floods

What should be done:

• Coherent research about the topography, glaciology and other factors in area
• Satellite monitoring of the heavy prone areas
• Very strict environment impact assessment in the area