Water channel may refer to: Strait, a naturally formed, narrow waterway Channel (geography), a landform consisting of the outline of the path of a narrow body of water Canal, a man-made channel for water Water Channel, a former TV channel in the United States Aquaporin, a cellular membrane structure that selectively passes water An experimental tank Ship model basin, used in naval architecture to study the behaviour of sea vessels Water tunnel (hydrodynamic), used to study hydraulic flow Wave tank, a laboratory setup for observing the behavior of surface waves (also called: wave flume) Ripple tank, a shallow glass tank of water used in schools and colleges to demonstrate the basic properties of waves