| environ. | dam draining The drawing of water from a reservoir by means of draining pipes located at the bottom of the basin and controlled by a system of sluices which ensure, if necessary, the emptying of the basin in a given period of time in respect of downstream conditions | odwodnienie zapory (system śluz i przepustów umożliwiający w razie potrzeby opróżnienie sztucznego zbiornika wodnego) |