"retention lagoons" in German retention lagoons Rückhaltebecken Retentionsbecken Detailed translations for "retention lagoons" retention lagoons retention lagoons(also: holding reservoirs, retention reservoirs, retention basins, detention basins) Rückhaltebecken{masculine plural} retention lagoons(also: holding reservoirs, retention reservoirs, retention basins, detention basins) Retentionsbecken{masculine plural}