Eulenbach

The Eulenbach, in combination with the Gräbbach, is a 12.3 km long left tributary of the Swist in North Rhine-Westphalia, Germany. The stream flows entirely within the Rhein-Sieg-Kreis, in the areas of Rheinbach and Swisttal.

The brook originates as Gräbbach at the eastern edge of Todenfeld in the Voreifel at an elevation of 357 m above sea level. From here, it flows predominantly in northern directions. Just below the parking lot at the forest chapel, the brook splits into an eastern arm and a western arm. The Himmerod Cistercians likely initiated the digging of the branch in the 13th century to power mills with this water. The two stream arms reunite after crossing the city area of Rheinbach in the northeastern section of the bypass road. From this point on, the brook takes the name Eulenbach. Before this, the western arm also receives the Stiefelsbach, which flows in northern directions, on its left side in the area of the city park at the southern edge of Rheinbach. After passing under Federal Highway 266 and the A61 motorway, the brook continues to flow northward and passes Ramershoven. A few hundred meters before its own mouth, the Eulenbach also takes in the Hochbach. Subsequently, the brook merges on the southern edge of Morenhoven at 146 m above sea level into the Swist on its left side.

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