Case study:Restoration of Enningdalsälv River

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Location: 58° 52' 58.97" N, 11° 32' 17.37" E

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Project overview

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Status	Complete
Project web site	http://projektwebbar.lansstyrelsen.se/projektenningdalsalven/Sv/Pages/default.aspx
Themes	Fisheries, Habitat and biodiversity, Hydromorphology
Country	Sweden
Main contact forename	Bäckstrand
Main contact surname	Andreas
Main contact user ID
Contact organisation	Tanums kommun & Enningdalsälvens vattenråd
Contact organisation web site	http://www.enningdalselven.com
Partner organisations
This is a parent project encompassing the following projects

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Project summary

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Monitoring surveys and results

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Lessons learnt

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Catchment and subcatchment

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(affects all case studies in this subcatchment)

Catchment

River basin district
River basin	Enningdal River Basin

Subcatchment

River name	Enningdal River
Area category	100 - 1000 km²
Area (km2)	782 km²78,200 ha <br />
Maximum altitude category
Maximum altitude (m)
Dominant geology	Organic (i.e. Peat)
Ecoregion	Fenno-Scandian Shield
Dominant land cover	Woodland
Waterbody ID

Site

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Name	Catchment of River Enningdalsälven
WFD water body codes
WFD (national) typology
WFD water body name
Pre-project morphology
Reference morphology
Desired post project morphology
Heavily modified water body
National/international site designation
Local/regional site designations	multiple designations across the site
Protected species present
Invasive species present
Species of interest
Dominant hydrology
Dominant substrate
River corridor land use	Woodland
Average bankfull channel width category
Average bankfull channel width (m)
Average bankfull channel depth category
Average bankfull channel depth (m)
Mean discharge category
Mean annual discharge (m3/s)
Average channel gradient category
Average channel gradient
Average unit stream power (W/m2)

Project background

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Reach length directly affected (m)
Project started	2009/06/01
Works started
Works completed	2011/06/01
Project completed
Total cost category	100 - 500 k€
Total cost (k€)	470 k€470,000 € <br />
Benefit to cost ratio
Funding sources	European Regional Development Fund (ERDF), Västra Götalands län, NINA samt Direktoratet for naturforvaltning, Norska IR midler

Cost for project phases

Phase	cost category	cost exact (k€)	Lead organisation	Contact forename	Contact surname
Investigation and design
Stakeholder engagement and communication
Works and works supervision
Post-project management and maintenance
Monitoring

Reasons for river restoration

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Mitigation of a pressure
Hydromorphology	Width & depth variation, Substrate conditions
Biology	Fish: Abundance, Fish: Species composition, Invertebrates: Abundance
Physico-chemical	pH, Acid neutralising capacity
Other reasons for the project

Measures

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Structural measures
Bank/bed modifications	Building fishways, Building of submerged weirs and pits, Introducing gravel, Re-introducing stones
Floodplain / River corridor
Planform / Channel pattern
Other	Liming
Non-structural measures
Management interventions
Social measures (incl. engagement)
Other

Monitoring

Hydromorphological quality elements

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quality elements

Element	When monitored		Type of monitoring		Control site used	Result
	Before measures	After measures	Qualitative	Quantitative
Width & depth variation						Awaiting results
Substrate conditions						Awaiting results

Biological quality elements

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quality elements

Element	When monitored		Type of monitoring		Control site used	Result
	Before measures	After measures	Qualitative	Quantitative
Fish: Abundance						Awaiting results
Fish: Species composition						Awaiting results
Invertebrates: Abundance						Awaiting results

Physico-chemical quality elements

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quality elements

Element	When monitored		Type of monitoring		Control site used	Result
	Before measures	After measures	Qualitative	Quantitative
pH
Acid neutralising capacity

Any other monitoring, e.g. social, economic

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Element	When monitored		Type of monitoring		Control site used	Result
	Before measures	After measures	Qualitative	Quantitative

Monitoring documents

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Image gallery

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Enningdalsälv River_after restoration

Enningdalsälv River after restoration (photo: Svingen E.)

Additional documents and videos

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Additional links and references

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Link	Description

Supplementary Information

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