List of rivers of Ostwestfalen-Lippe
This list of rivers and streams in Ostwestfalen-Lippe contains a selection of the rivers, streams and lakes which lie wholly or partly in Ostwestfalen-Lippe (OWL). The rivers are organised based on the Weser, Lippe and Ems river systems. In addition they are sometimes further divided into sub-regions. The list does not contain all named rivers in OWL, but at least all those with a total catchment area of 10 square kilometres. The list of lakes is also not a full list of all named lakes, especially as the distinction with ponds  is not always clear. System. River or stream. System: River name (No., L/R, district) All tributaries are listed in downstream order in relation to their parent river. The tributaries are listed based on their ranking in the river system: Lakes. System: Name (Parish, district, surface area, origin/type) The lakes are in order of size. If the lake is the largest in its district, the district name is in bold.