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Chennai's growth has spread over many of its old lakes, tanks and canals. Land recorded as a water body cannot lawfully be built on, and courts in Tamil Nadu have repeatedly ordered such encroachments removed, including houses that families have lived in for decades. This guide sets out the law, recent cases and the checks a buyer can make.
This is general information, not legal advice. Have a lawyer verify the land classification of any property before you buy.
The law
- In L. Krishnan v. State of Tamil Nadu (Madras High Court, 27 June 2005), a case from Villupuram district, the court ordered removal of encroachments on land classified as odai poramboke (a natural water storage) and said the state must take definite measures to restore water storage tanks, ponds and lakes across Tamil Nadu.
- Following a direction of the High Court's First Bench, the state enacted the Tamil Nadu Protection of Tanks and Eviction of Encroachments Act, 2007 (as recalled by the High Court in April 2015).
- The Tamil Nadu Regularisation of Unapproved Plots and Layouts Rules, 2017 exclude land in water bodies (channels, canals, tanks, lakes and rivers) and government poramboke land from regularisation. See our guide to unapproved plots.
Recent cases
| Date | What happened |
|---|---|
| August 2019 | The Madras High Court calls for zero tolerance of water-body encroachment and asks the state to form a committee to oversee clearance (DT Next, March 2020) |
| March 2020 | The Public Works Department says it expects to clear over 17,800 encroachments around water bodies in two years; at Rajakilpakkam lake alone it recorded over 1,300 encroachments, with the lake reduced from about 105 acres to 30 (DT Next) |
| 26 February 2024 | The National Green Tribunal takes up a report that Chitlapakkam lake shrank from about 53 to 47 acres, with 74 of 403 identified encroachments removed despite a High Court order, and issues notices to state agencies (India Environment Portal) |
| 13 March 2026 | The Greater Chennai Corporation begins demolishing 38 houses in Annai Sathya Nagar near Villivakkam lake, saying the land is classified as a water body; residents said a court case was pending, and officials said the families would be given alternative houses (DT Next) |
Who is affected
- Families living on land recorded as lake, tank, canal or water-body poramboke, whether or not they hold any documents.
- Buyers who purchased plots or houses on such land, sometimes through a chain of registered sale deeds.
- Nearby owners, because restoration of lakes can change access roads and drainage.
How to check a property
- Get the survey number and sub-division from the patta and sale deed.
- Check the land classification in the village A-register and the Field Measurement Book (FMB) sketch at the taluk office. Court cases have involved classifications such as odai poramboke (water channel) and kuttai (tank); a lawyer can tell you whether the recorded classification is a water body.
- Compare the plot's position with nearby lakes and canals on the FMB and village maps.
- Trace the title back at least 30 years with an encumbrance certificate. See our land documents checklist.
- Check that the layout is approved by CMDA or DTCP. See CMDA vs DTCP approved plots.
- Ask neighbours about flooding and any eviction notices in the area.
A registered sale deed, a patta or an electricity connection does not change land that is recorded as a water body. Check the original classification.
Frequently asked questions
Can a house on lake-bed land in Chennai be regularised?
Land in water bodies is excluded from Tamil Nadu's 2017 regularisation rules for unapproved plots, and courts have repeatedly ordered water-body encroachments removed.
How do I know if a plot is on water-body land?
Check the land classification for the survey number in the village A-register and the FMB sketch at the taluk office, and compare the plot's position with nearby lakes and canals. A lawyer can help interpret the records.
Have houses near Chennai lakes actually been demolished?
Yes. For example, in March 2026 the Greater Chennai Corporation demolished 38 houses near Villivakkam lake on land it said was classified as a water body.
What law protects water bodies in Tamil Nadu?
The Tamil Nadu Protection of Tanks and Eviction of Encroachments Act, 2007, among other laws, and a series of Madras High Court orders on water-body encroachment.
Sources
- CaseMine: L. Krishnan v. State of Tamil Nadu (Madras High Court, 2005) — Water-channel encroachment judgment
- India Environment Portal (The Hindu): No construction should come up on waterbody, HC tells Collector — April 2015; origin of the 2007 Act
- Tamil Nadu Regularisation of Unapproved Layouts and Plots Rules, 2017 — Water bodies excluded from regularisation
- DT Next: Waterbody encroachers stare at eviction as time runs out for govt — 2019 High Court order; encroachment figures, March 2020
- India Environment Portal: NGT order on Chitlapakkam lake encroachment, 26 Feb 2024 — Lake area and encroachment figures
- DT Next: Citing encroachment, Chennai Corporation demolishes 38 houses near Villivakkam lake — March 2026