Gujarat and Maharashtra have many river water dams and reservoirs but these states were flooded extensively in 2006. What was the reason?
Ans. Reservoirs obstruct the river sediments to free flow and these subside on the floor of the reservoir and raise the water level consequendy. When heavy rainfall occurs, the dams aggravate the flood situation by opening watergates to avoid breaching the embarkment.
Such situation happened in Gujarat ancTMaharashtra in 2006. .