(Feature Image: Model performance computed across 71 stations (a) NAT-KGE: median 0.4 (b) NAT-NSE: median 0.42 (c) DAM-KGE: median 0.47 (d) DAM-NSE: median 0.60. Source: AGU)
A new study has again emphasized on why dam operations in India need to move from routine schedules to weather forecast based management. The study analyzed 223 dams across the country over 23 years by comparing river flows with and without the dams. Most importantly, the study has highlighted the limitations of dams in controlling successive floods. It found that about 74% of the dams were more than 90% full on the day of a high-flood event. Thus, leaving very little space to hold the next heavy rainfall spell and control resultant floods.
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