Alternate system for lowering the flood water levels in rivers

摘要

The above-mentioned system of reducing water levels in rivers and mountain streams operating automatically during storms and blizzards is characterised by this, that it consists of solid ground retention tanks of the dry (1) solid underground retention tanks of the dry type (9) and deposited ground retention tanks of the dry type (2) substrate (3) serves the water (4) the water lock (5) the water valve floating (6) the surface water lock (7) with a floating valve water valve (8) and from regional water status monitoring in a system cooperating with the national flood control system.