A reference hub for property owners, buyers, and advisors researching Chennai's only Ramsar wetland — official documents, maps, and government links, gathered in one place.
Pallikaranai Marshland was designated a Ramsar site of international importance on 8 April 2022, and since then a layered set of rules, wetland buffer zones, and CMDA/DTCP conditions, has applied to land in and around the marsh. If you own, are buying, or are valuing property in Velachery, Perungudi, Pallikaranai, Sholinganallur, Injambakkam, or the surrounding belt, it helps to see the primary source documents directly rather than relying on secondhand summaries.
This page collects the official documents and government links in one place. For a plain-English explanation of what this actually means for your property's value, see our companion guide: Ramsar Sites in Chennai and Their Impact on Property Valuation →
Issued 9 October 2025. Following a National Green Tribunal Suo Motu order, CMDA has instructed that no approvals, sanctions, or permissions be granted for developments within the Ramsar Site boundary and its 1 km zone of influence, effective 6 October 2025. Includes the official influence-area map as an enclosure.
Download PDF (2 pages) →The official map showing the Pallikaranai Swamp area, the notified Ramsar Site boundary, and the 1 km influence area, overlaid on village and survey-parcel boundaries across Velachery, Perungudi, Pallikaranai, Injambakkam, Sholinganallur, and neighbouring areas.
Download Map (PDF) →The official international record for Pallikaranai Marsh Reserve Forest: designation date, area, ecological character, and wetland type under the Ramsar Convention.
View RSIS Record ↗The Tamil Nadu State Wetlands Authority's GIS map viewer, centred on Pallikaranai Marsh. Zoom in to check specific parcels against the notified boundary and influence zone.
Open Map Viewer ↗The state authority's official profile page for Pallikaranai Marsh Reserve Forest, with site classification and status details.
View Site Information ↗These are primary sources, useful for verifying a claim, checking whether a specific parcel falls within the notified boundary or influence zone, or sharing with your bank, CA, or advocate alongside your valuation report. They are not a substitute for a physical site inspection and land-record check, which is what a registered valuer's report is for. To check your own plot on the map and see what the order means if you plan to build, sell or borrow, read Is Your Plot in the Pallikaranai Ramsar 1 km Zone? →
If you want the full picture, how Ramsar status, wetland buffer rules and the CMDA 1 km order actually affect market value, bank lending, and capital gains computation, read the complete guide: Ramsar Sites in Chennai and Their Impact on Property Valuation →
Get a certified valuation report that correctly accounts for the Ramsar boundary and influence zone.