Conolly’s canal: the ditch that made Kozhikode, and what it carries now

The water at Sarovaram is not a lake, whatever the tourism pages call it. It is the Conolly Canal, and it was dug by hand.

Henry Valentine Conolly was Collector of Malabar from 1841 until 1855, and between 1848 and 1850 the canal that carries his name was cut to link the Korapuzha in the north with the Kallai river in the south — 11.4 kilometres of it, between six and twenty metres wide, half a metre to two metres deep in the monsoon, and made essentially without machinery. Its purpose was commercial and entirely practical: to move Malabar’s produce down to Kallayi port through the Kuttiyadi and Korapuzha systems without going out into the sea. For more than a century it carried coconut oil and coir toward Cochin.

Getting the name right

Conolly — one n in the middle, two l’s. Canoli and Canoly are the local transliterations and are what Kerala Tourism, the district tourism body and OpenStreetMap’s alternate name use, so you will see all three in Kozhikode. Connolly, with a double n, is simply wrong and turns up constantly.

And one thing this page will not do, because the reference sources invite it. Conolly’s name is also attached to the Nilambur teak plantation, and the standard biography of him credits him with developing the teak plantations without mentioning Chathu Menon at all. The plantation did begin under Conolly, from 1842. The man who solved the germination problem that had defeated everyone, and who actually raised it, was Chathu Menon, Sub-Conservator of Forests, who is buried at the site. On this page Conolly gets the canal.

He did not enjoy either for long. He was murdered at the Collector’s residence, the West Hill bungalow in Calicut, at about nine in the evening on 11 September 1855, over his part in the exiling of Sayyid Fazal. His headstone is preserved at a church in the city. The man who ordered this canal dug was killed a few kilometres from it, five years after it was finished.

What it became

Under the National Waterways Act of 2016 the canal’s run from Kozhikode down to Kottapuram — around 170 kilometres — became part of National Waterway 3. That is why national waterway maps now reach Kozhikode at all, and it is worth being precise about the numbers, because they are muddled everywhere: the older and much-quoted 168 kilometres is the Kollam–Kottapuram West Coast Canal stretch, and the 205 kilometres often printed alongside is the 1993 notified total once the Champakara and Udyogamandal feeder canals are added. The 2016 extension is a separate, later thing.

Statutory status has not made it navigable. Through Kozhikode the canal is described in the reference literature as a cess pool of drainage, untreated sewage and other domestic waste, with navigation compromised by encroachment, siltation, collapsed stone lining and vegetation. In March 2021 a news report on three crore rupees spent summarised the result in its headline: the canal remains a sewage carrier. A far larger conversion project has been reported since, at a figure we could not verify against any primary document, so we are not printing it.

There is a small melancholy footnote. In September 2009 the Canoly Canal Development Samithi decided to start a speedboat service from Karaparamba to the park. We could find no evidence that it ever ran.

The contradiction at the centre of the park

Here is the thing that makes Sarovaram genuinely interesting rather than merely pleasant. The canal delivers tidal water from the Kallai and Korapuzha estuaries into the Kottooli wetland. That brackish exchange is what allows seven species of mangrove to grow in the middle of a city. It is the park’s ecological engine.

It is also the sewage. The same channel doing the ecological work is the one carrying the city’s untreated waste, and the open water in photographs of this place is dark, still and opaque. The wetland is described in the reference sources, without euphemism, as a sink for pollutants including city and hospital waste — alongside its other unpaid jobs of taking the city’s flood water and recharging the wells around it.

None of which is a reason not to go. It is a reason to understand what you are looking at: not a scenic lake with a park round it, but a working piece of urban hydrology that has been quietly absorbing what Kozhikode throws at it for a hundred and seventy-five years, and that a citizens’ committee had to go to the High Court in 2026 to stop people building on.