"navigation channel" . "artificially constructed waterway" . . . "lock cuttings" . "canal" . "Rajwaha" . "Canal" . "Gracht (canal)" . "artificial river" . . "ship channel" . . . . "Vaart" . "artificial canals" . . "irrigation canals" . . . "artificial waterway" . "ancient irrigation canals" . . . "arterial and feeder waterway" . "navigable" . "Canals" . . . . "Lehigh navigation" . . . "artificial waterways" . . "artificial drainage channel" . . "channels" . . . "navigation" . . "channel" . . "water transport" . . "summit level" . "man-made waterway" . "slack-water canal" . "the improvements" . "canalised" . "irrigation canal" . "Inland waterway" . . "feeder canal" . . . . "artificial watercourse" . "navigations" . "Natural canal." . . . . . . "cuts" . . . . "canal system" . . "shipping canal" . . . . "Inland waterways" . . . "navigations, and canals" . . . "canals" . "urban canal" . "Canal#Navigations" . . . . "navigation canal" . "Fosso" . "Qanah" . "water channel" . . "turning channel" . . . "Canal" . "canals and river navigations" . . "lagoons" . . . .