Waterbody Type:Mid-sized coarse substrate-dominated siliceous highland river (type 9)
Small coarse substrate-dominated siliceous highland river (type 5)
Elevation:91 m.a.s.l. to 480 m.a.s.l.
Length:50.6 km
Discharge:Mean low water: 1 m3/s
Average discharge: 9 m3/s
Mean high water: 118 m3/s
Basin:428 km2
Particularities:The course of the River Volme is characterised by narrow valleys, with some settlements located very closely to the river banks.