| Waterbody Type: | Mid-sized coarse substrate-dominated siliceous highland river (type 9) Small coarse substrate-dominated siliceous highland river (type 5) |
| Elevation: | 160 m.a.s.l. to 595 m.a.s.l. |
| Length: | 29.0 km |
| Discharge: | Mean low water: 0.7 m3/s Average Discharge: 3 m3/s Mean high water: 24 m3/s |
| Basin: | 203 km2 |
| Usage: | |
| Particularities: | Upstream of the town of Sundern, part of the Röhr’s discharge and that of its two side arms Waldbach and Settmecke is transferred to the Sorpe Reservoir via a diversion system. Starting at Hachen, the Röhr’s discharge is affected by the reservoir and dam system. |
