Kolkata Waterlogging & Drainage
337 KMC-listed waterlogging pockets and the I&WD drainage pumping stations
The Kolkata Municipal Corporation's Monsoon Book 2021 lists 337 major waterlogging pockets across its 16 boroughs. These are the streets, crossings and bustees that KMC itself names in its monsoon action plan. Borough XVI alone accounts for 79 of them, almost a quarter of the list.
Much of that water has to be pumped out. The state Irrigation & Waterways Department lists 11 drainage pumping stations for the Kolkata drainage system, with a combined installed capacity of 7,078 cusec.
About this data
What this page shows
The 337 pockets listed in KMC's Monsoon Book 2021, counted by borough and by ward and given as a searchable list. The page also shows the Irrigation & Waterways Department's current table of 11 drainage pumping stations, three extreme rainfall events with IMD figures, and two drainage facts that could be traced to a source.
Where the data comes from
The pocket list is Section C (“Major Water Logging Pockets”, pdf pages 11-21) of the KMC Monsoon Book 2021, published on kmcgov.in. Pumping stations come from the WB Irrigation & Waterways Department's Kolkata Metropolis Drainage page. Rainfall comes from IMD press releases and bulletins.
Limitations worth knowing
The Monsoon Book records only where a pocket is. It gives no depth, duration, severity, recurrence or coordinates, so this page ranks nothing by severity and maps nothing. Each borough office compiled its own entries, and some list whole street segments while others list single crossings. A high count therefore reflects how the borough itemised its list as well as how much it floods. The list dates from 2021 and was extracted from the PDF by machine, so some names may contain transcription errors. Pockets that span two or three wards are counted once in each ward. An earlier version of this page showed severity ratings, borough vulnerability scores, map coordinates and several drainage figures that had no source. All of them have been removed.
Embed this page
Drop these charts into your blog, brief, or report. Updates flow through automatically.