Cölbe

General
River Characterisation
	Reach; Reach;
River typology
Hydromorphological quality elements
	River depth and width variation; Structure and substrate of the river bed; Structure of the riparian zone;
Biological quality elements
	Macrophytes and phytobenthos; Benthic invertebrates; Fish;
Ecosystem Services
EU Directives
	Water Framework Directive; Habitats Directive; Birds Directive;
Pressures
	Artificial barriers downstream from the site; Artificial barriers upstream from the site; Alteration of instream habitat; Alteration of riparian vegetation; Channelisation / cross section alteration;
Measures
	Widen water courses; Allow/increase lateral channel migration or river mobility; Shallow water courses; Initiate natural channel dynamics to promote natural regeneration; Introduce large wood; Remove bank fixation; Recreate gravel bar and riffles; Remove bank fixation; Lower river banks or floodplains to enlarge inundation and flooding; Remove hard engineering structures that impede lateral connectivity;
Other

Key features of the case study

General
Country	DE
River Name	Lahn
Site Name	Lahn Cölbe
River Characterisation
Reach Reach
River typology
Location (Lat Lon)	50.86588, 8.79088
Altitude	lowland: < 200 m
Catchment area	medium: > 100 - 1000 km2
Geology	Siliceous
National code/ River type name	Type 9
Hydromorphological quality elements
River depth and width variation Structure and substrate of the river bed Structure of the riparian zone
Biological quality elements
Macrophytes and phytobenthos Benthic invertebrates Fish
Ecosystem Services

EU Directives
Water Framework Directive Habitats Directive Birds Directive
Pressures
Artificial barriers downstream from the site Artificial barriers upstream from the site Alteration of instream habitat Alteration of riparian vegetation Channelisation / cross section alteration
Measures
Widen water courses Allow/increase lateral channel migration or river mobility Shallow water courses Initiate natural channel dynamics to promote natural regeneration Introduce large wood Remove bank fixation Recreate gravel bar and riffles Remove bank fixation Lower river banks or floodplains to enlarge inundation and flooding Remove hard engineering structures that impede lateral connectivity
Other
Project size	0.2 km
Approximate costs	100 000 - 1 000 000 Euros
Synergy	---
Status	Realised
Period of realization	2000
Evaluation	Hydromorphological and ecological changes
Implemented by	Staatliches Umweltamt Marburg, Regierungspräsidium Gießen, Germany