A drainage canal is a small man-made channel that is designed to carry away excess water from an area. Its purpose is to prevent flooding by directing the water towards a larger body of water, such as a river or ocean. Full definition
A makeshift canal used to drain water from a neighborhood in January was now a full drainage canal covered by a permanent bridge. (aaas.org)
Bleaker than the landscape is the infrastructure for some 80,000 people clinging to an agrarian lifestyle, often along drainage canals within regions that used to be covered by marshes. (discovermagazine.com)
Prytania Street was transformed into a pit in 2015 for the installation of new drainage canals underground. (uptownmessenger.com)