{{short description|River in Tamil Nadu, India}} {{Use dmy dates|date=August 2019}} thumb|Kollidam River The '''Kollidam''' (referred to as '''Coleroon''' in Colonial English) is a river in southeastern India. The Kollidam is the northern distributary of the Cauvery River as it flows through the delta districts. It splits from the main branch of the Cauvery River at the island of Srirangam and flows eastward into the Bay of Bengal near Kollidam block, Pazhaiyar, Mayiladuthurai district. The distribution system in Kollidam lies at Lower Anaicut which is an island of river Kollidam.<ref>{{Cite book |last=Ka.Vi.Kannan |url=https://www.google.com.qa/books/edition/River_cauvery_the_most_battl_r_ed/4CGFDwAAQBAJ?hl=en&gbpv=1&dq=kollidam+river&pg=RA1-PA11&printsec=frontcover |title=River cauvery the most battl(r)ed |date=2019-01-25 |publisher=Notion Press |isbn=978-1-68466-604-1 |language=en}}</ref><ref>{{Cite book |last=Kumar |first=Manish |url=https://www.google.com.qa/books/edition/River_Basin_Ecohydrology_in_the_Indian_S/ucIAEQAAQBAJ?hl=en&gbpv=1&dq=kollidam+river&pg=PA245&printsec=frontcover |title=River Basin Ecohydrology in the Indian Sub-Continent: Sustainable Strategies and Sustenance |last2=Ramanathan |first2=A. L. |last3=Shrestha |first3=Sangam |last4=Kuroda |first4=Keisuke |last5=Mukherjee |first5=Santanu |date=2024-06-11 |publisher=Elsevier |isbn=978-0-323-91546-5 |language=en}}</ref><ref>{{Cite book |last=Stephen |first=S. Jeyaseela |url=https://www.google.com.qa/books/edition/History_of_the_Climate_Change_on_the_Cor/DUe1EAAAQBAJ?hl=en&gbpv=1&dq=kollidam+river+history&pg=PT5&printsec=frontcover |title=History of the Climate Change on the Coromandel Coast: Ninth–Nineteenth Centuries |date=2023-06-09 |publisher=Taylor & Francis |isbn=978-1-000-90524-3 |language=en}}</ref>

The surplus and floodwater from the Mettur Dam are diverted into the Kollidam River by the Public Works Department (PWD) to ensure safe discharge into the Bay of Bengal. This measure helps manage excess water flow and reduces the risk of flooding in surrounding areas.<ref>{{cite web|title=Flood prevention works along Kollidam to be over by March end|url=http://www.thehindu.com/todays-paper/tp-national/tp-tamilnadu/article2926527.ece|access-date=24 February 2012}}</ref><ref>{{Cite news |title=Surplus water flow diverted into Kollidam river |url=https://www.thehindu.com/news/cities/Tiruchirapalli/surplus-water-flow-diverted-into-kollidam-river/article69955871.ece |archive-url=https://web.archive.org/web/20250823080111/https://www.thehindu.com/news/cities/Tiruchirapalli/surplus-water-flow-diverted-into-kollidam-river/article69955871.ece |archive-date=2025-08-23 |access-date=2025-11-05 |work=The Hindu |language=en}}</ref>

==References== {{Reflist}} {{Kaveri River}}

{{coord|11.3596|79.8294|format=dms|type:river_region:IN-TN|display=title}}

Category:Rivers of Tamil Nadu Category:Distributaries Category:Tributaries of the Kaveri River

{{India-river-stub}}