Sin: කොලොන්නාව kolonnāva – Tam: கொலன்னாவ kolaṉṉāva
‘Kelani Plain’ WP, Sri Lanka
Kolonnawa is a suburb of Colombo and, like its parent city, its name probably derives from the Kelani Ganga: kolon is a corruption of kelani.
Kolonnawa is part of the flood plain of Kelani river: 70% of the land is below sea level and is dependent on bunds for flood protection – which is not always effective!
For related place names see Sri Lanka Place names.