surface water
type: Concept
narrower: canals

canals
type: Concept
definition: A canal is a waterway used for the shipping of goods and for transportation between two points. A canal can be built where there is no existing waterway, or it can be a river modified to handle such traffic. [Source: Encyclopedia of American Urban History; Canals]
broader: waterways
broader: surface water
broader: running water

waterways
type: Concept
narrower: canals

running water
type: Concept
narrower: canals

concepts
type: Collection
type: ConceptGroup
member: canals