RUR (ROER) RIVER, ARTIFICIAL FLOODING POTENTIALITIES

A study was made of the hydraulic effects and artificial-flooding potentialities which would result from interruption of the water-control systems along the main stem of the Rur River below the Urft and Schwammenauel Dams. The data which are given include 1 normal and extreme discharges, stages, and velocities at key stations on the Rur 2 stream gradients, and depths and widths of channels and flood plains 3 locations and zero elevations of gaging stations 4 locations and dimensions of dams and bridges 5 the extent of flooding which would result from the erection of temporary dams and 6 the magnitude and duration of flood waves and flow variations which would result from breaching or controlling the dams. Much of the information is taken from the accounts of the Rur crossing by the AEF in 1945. Breaching of the Urft, Schwammenauel, Kall, or Dreilaegerbach Dams would destroy or endanger bridges and dams for an undetermined distance downstream. Breaching the Urft or Schwammenauel Dams would interfere with stream crossings for several days. Destruction of the dams would disrupt water and electrical supplies of the Dueren and Juelich areas. Still-water barriers combined with natural obstacles and tactical operations would hinder trafficability and crossing operation. Combined or cyclic release of dam water would have similar effects. Releasing water from the Kall or Dreilaegerbach Dams would insignificantly affect bridging and crossing operations.