A wave forming apparatus has a channel for containing a flow of water with an inlet end connected to a water supply, a base, and spaced side walls, a weir bed form in the base at the inlet end of the channel, and at least one additional bed form in the channel downstream of the weir. Each bed form has...http://www.google.fr/patents/US7326001?utm_source=gb-gplus-shareBrevet US7326001 - Wave forming apparatus and method
