A depiction of the undertow and hydraulic effect of water flowing over a dam. The river flowing over the dam is recycled back towards the dam wall, trapping any object including people and boats in the backwash.
A depiction of the undertow and hydraulic effect of water flowing over a dam. The river flowing over the dam is recycled back towards the dam wall, trapping any object including people and boats in the backwash.
Illustration originally created as a safety exhibit at the Washington Aqueduct Dam.; Abbr=WE