Facts and figures

The Lippe is a typical lowland river with low gradients and comparatively low minimum water flow. However, heavy rainfall causes the water volume to increase dramatically, meaning that flood protection is a priority task on the Lippe.

River basin-
Altitude 7 to 61 m above sea level
Altitude difference 54 m
Average gradient 0.5 ‰
Minimum water flow (MNQ) 16 m³/s
Average water flow (MQ) 46 m³/s
Average high water (MHQ) 211 m³/s
Highest high water (HHQ) 700 m³/s
Average groundwater formation approx. 190 mm/a
Waterways 395 km
of which Lippe 148 km
of which clean waterways 199 km
of which wastewater channels 49 km
Sewers 128 km
Dykes 76,13 km
of which Lippe 32,61 km
of which subsidiary waterways 43,52 km
Facilities of the LIPPEVERBAND -
Wastewater treatment plants 50
with a capacity of approx. 2.3 million population equivalent
Pumping stations 148
of which wastewater pumping station 48
of which drainage pump stations 100
proportion of land drained by pumping stations in total area 15,7 %
Flood retention basins 34
Stormwater retention basins 28
Mixed water treatment plants 141
Regenwasserbehandlungsanlagen 120
Stormwater overflows 21
Date 30 June 2015