Töss

General
River Characterisation
River typology
Hydromorphological quality elements
	Quantity and dynamics of water flow; Connection to groundwater bodies; Structure of the riparian zone;
Biological quality elements
	Phytoplankton; Benthic invertebrates; Fish;
Ecosystem Services
EU Directives
Pressures
	Groundwater abstractions; Artificial barriers downstream from the site; Artificial barriers upstream from the site; Alteration of instream habitat; Embankments, levees or dikes; Loss of vertical connectivity; Alteration of riparian vegetation; Channelisation / cross section alteration;
Measures
	Establish environmental flows / naturalise flow regimes; Facilitate downstream migration; Remove barrier; Widen water courses; Allow/increase lateral channel migration or river mobility; Remeander water courses; Initiate natural channel dynamics to promote natural regeneration; Remove sediments; Remove bank fixation; Remove or modify in-channel hydraulic structures; Lower river banks or floodplains to enlarge inundation and flooding; Remove hard engineering structures that impede lateral connectivity; Construct semi-natural/articificial wetlands or aquatic habitats; Set back embankments, levees or dikes;
Other

Key features of the case study

Site description

Measures selection

Success criteria

Ecological response

Hydromorphological response

Monitoring before and after implementation of the project

Socio-economic aspects

Contact person within the organization

Extra background information

References

Related Measures

Related Pressures

General
Country	CH
River Name	Töss
Site Name	Töss
River Characterisation

River typology
Location (Lat Lon)	47.46338, 8.72825
Altitude	mid-altitude: 200 - 800 m
Catchment area	medium: > 100 - 1000 km2
Geology	Calcareous
National code/ River type name
Hydromorphological quality elements
Quantity and dynamics of water flow Connection to groundwater bodies Structure of the riparian zone
Biological quality elements
Phytoplankton Benthic invertebrates Fish
Ecosystem Services

EU Directives

Pressures
Groundwater abstractions Artificial barriers downstream from the site Artificial barriers upstream from the site Alteration of instream habitat Embankments, levees or dikes Loss of vertical connectivity Alteration of riparian vegetation Channelisation / cross section alteration
Measures
Establish environmental flows / naturalise flow regimes Facilitate downstream migration Remove barrier Widen water courses Allow/increase lateral channel migration or river mobility Remeander water courses Initiate natural channel dynamics to promote natural regeneration Remove sediments Remove bank fixation Remove or modify in-channel hydraulic structures Lower river banks or floodplains to enlarge inundation and flooding Remove hard engineering structures that impede lateral connectivity Construct semi-natural/articificial wetlands or aquatic habitats Set back embankments, levees or dikes
Other
Project size	0.2 km
Approximate costs	100 000 - 1 000 000 Euros
Synergy	Flood protection, ecology, recreation
Status	Realised
Period of realization	2001-2002, 2009-2010
Evaluation	Hydromorphological and ecological changes
Implemented by	Amt für Umwelt (Thurgau) and Amt für Abfall, Wasser, Energie und Luft (Zurich)

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Töss

Töss

Key features of the case study

Site description

Measures selection

Success criteria

Ecological response

Hydromorphological response

Monitoring before and after implementation of the project

Socio-economic aspects

Contact person within the organization

Extra background information

References

Related Measures

Related Pressures