Conolly Canal, sometimes spelled as Canoly Canal, is the part of the West coast canal network of Kerala and the canal was constructed by combining the rivers and streams along the coast with the intention of creating a vast waterway from Kozhikode to Kochi. It was constructed in the year 1848 under the orders of then collector of Malabar, H.V. Conolly, initially to facilitate movement of goods to Kallayi Port from hinter lands of Malabar through Kuttiyadi and Korapuzha river systems. The construction was from 1848–50. The canal was built almost entirely by human labour at a time when no machinery was in place. The Canoly Canal connects various rivers and streams including the Korapuzha river in the north and the Kallai River in the south thus forming part of the line of water communication from Vadakara to Beypore. The width of the canal varies between 6 and 20 metres, and the water depth during the monsoon ranges between 0.5 and 2 metres. This was the main waterway for the cargo movement between Kochi and Calicut, trade was the definition of the Canolly canal for more than a century
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