The meteorological conditions which caused the flooding of Delhi in 2023 between 08July till approximately 15July2023 have already been described in the previous blog - the same conditions which caused landslides and destruction in Himachal Pradesh resulted in parts of Delhi getting flooded by the Yamuna river.
As a matter of fact, large parts of Himachal and the foothills of Haryana and Punjab form the watershed area for the Yamuna river and much of the storm water from these areas finally drains into the Yamuna (see map below).
According to officials, Delhi's outdated drainage system can handle only up to 50 mm of rainfall in 24 hours.
However, what became clear was it was not only climate change or the heavy rainfall which had caused the flooding in Delhi. It was also the release of Yamuna water from Hathnikund barrage in Haryana which caused the inordinate amounts of water to reach Delhi
The areas which were flooded in early July 2023 were those in the vicinity of the Yamuna river in NE Delhi and also some areas for whom it was a grim first time - parts of Ring Road, Mathura road etc.
ISBT, Kashmiri Gate, Delhi Jal Board AreaYamuna Biodiversity Park Area