Case study:River Skerne- Life project: Difference between revisions
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{{ | {{Project overview | ||
|Status= | |Status=Complete | ||
|Themes=Economic aspects, Habitat and biodiversity, Social benefits, Water quality | |||
|Country=England | |||
|Main contact forename=RRC | |||
|Main contact surname=River Restoration Centre | |||
|Contact organisation=Life Project | |||
|Themes= | |Partner organisations=River Restoration Centre, Darlington Borough Council, Environment Agency, Natural England | ||
|Multi-site=No | |||
|Country= | |Project summary=The Skerne demonstration site is located in the town of Darlington, County Durham and demonstrates what can be achieved in an urban environment. The Skerne has been straightened and enlarged to reduce flooding and to drain the surrounding urban area. Much of the floodplain has been raised by old industrial waste tipping, with gas and sewer pipes running alongside the river. As a result of these constraints, restoration opportunities were severely limited - typical of urban rivers elsewhere. | ||
|Main contact forename= | A 2km length of the river has been restored. Four new meanders have been formed in a remaining section of floodplain used as open parkland. The excess soil was used to landscape nearby steep slopes. Riverbanks have been strengthened with willow and reeds to prevent erosion. Thirteen ugly surface water outfalls have been replaced with underground inspection /collection chambers that firstly intercept pollution and then discharge the water into the river below water level. | ||
|Main contact surname= | Elsewhere, where the river could not be re-meandered, it has been enhanced by reshaping and narrowing the bed to vary the flow and to allow riverside plants to flourish. New footpaths and planting schemes complete the theme of "bringing the countryside into town", which locally has been greatly appreciated. | ||
|Contact organisation= | |||
|Partner organisations= | |||
|Multi-site= | |||
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}} | }} | ||
{{Case_study_subcatchment | {{Case_study_subcatchment |
Revision as of 21:43, 5 August 2012
Project overview
Status | Complete |
---|---|
Project web site | |
Themes | Economic aspects, Habitat and biodiversity, Social benefits, Water quality |
Country | England |
Main contact forename | RRC |
Main contact surname | River Restoration Centre |
Main contact user ID | |
Contact organisation | Life Project |
Contact organisation web site | |
Partner organisations | River Restoration Centre, Darlington Borough Council, Environment Agency, Natural England |
Parent multi-site project | |
This is a parent project encompassing the following projects |
No |
Project summary
The Skerne demonstration site is located in the town of Darlington, County Durham and demonstrates what can be achieved in an urban environment. The Skerne has been straightened and enlarged to reduce flooding and to drain the surrounding urban area. Much of the floodplain has been raised by old industrial waste tipping, with gas and sewer pipes running alongside the river. As a result of these constraints, restoration opportunities were severely limited - typical of urban rivers elsewhere.
A 2km length of the river has been restored. Four new meanders have been formed in a remaining section of floodplain used as open parkland. The excess soil was used to landscape nearby steep slopes. Riverbanks have been strengthened with willow and reeds to prevent erosion. Thirteen ugly surface water outfalls have been replaced with underground inspection /collection chambers that firstly intercept pollution and then discharge the water into the river below water level.
Elsewhere, where the river could not be re-meandered, it has been enhanced by reshaping and narrowing the bed to vary the flow and to allow riverside plants to flourish. New footpaths and planting schemes complete the theme of "bringing the countryside into town", which locally has been greatly appreciated.
Monitoring surveys and results
Lessons learnt
Catchment and subcatchment
Edit the catchment and subcatchment details
(affects all case studies in this subcatchment)
Site
Name | River Skerne at Haughton le Skerne |
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WFD water body codes | |
WFD (national) typology | |
WFD water body name | |
Pre-project morphology | Straight |
Reference morphology | Sinuous |
Desired post project morphology | |
Heavily modified water body | true |
National/international site designation | |
Local/regional site designations | |
Protected species present | |
Invasive species present | |
Species of interest | |
Dominant hydrology | Quick run-off |
Dominant substrate | |
River corridor land use | Urban |
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
Reach length directly affected (m) | 2000 m2 km <br />200,000 cm <br /> |
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Project started | |
Works started | |
Works completed | |
Project completed | |
Total cost category | |
Total cost (k€) | |
Benefit to cost ratio | |
Funding sources |
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
Measures
Structural measures
| |
---|---|
Bank/bed modifications | Re-grading and lowering, Deflector structures |
Floodplain / River corridor | Lowering of floodplain, Revegetate riparian zone, Creation of small wetlands |
Planform / Channel pattern | Introduction of sinuosity, Introduction of backwaters |
Other | |
Non-structural measures
| |
Management interventions | |
Social measures (incl. engagement) | |
Other | Participation in works, Information provision, Participation in design, Consultation |
Monitoring
Hydromorphological quality elements
Element | When monitored | Type of monitoring | Control site used | Result | ||
---|---|---|---|---|---|---|
Before measures | After measures | Qualitative | Quantitative |
Biological quality elements
Element | When monitored | Type of monitoring | Control site used | Result | ||
---|---|---|---|---|---|---|
Before measures | After measures | Qualitative | Quantitative | |||
Fish: Species composition | Yes | Yes | Yes | Improvement | ||
Invertebrates | Yes | Yes | Yes | Improvement | ||
Macrophytes | Yes | Yes | Yes | Improvement |
Physico-chemical quality elements
Element | When monitored | Type of monitoring | Control site used | Result | ||
---|---|---|---|---|---|---|
Before measures | After measures | Qualitative | Quantitative |
Any other monitoring, e.g. social, economic
Element | When monitored | Type of monitoring | Control site used | Result | ||
---|---|---|---|---|---|---|
Before measures | After measures | Qualitative | Quantitative | |||
Public use of community park | Yes | Yes | Yes | Improvement |
Monitoring documents
Image gallery
Additional documents and videos
Additional links and references
Link | Description |
---|---|
http://http://www.therrc.co.uk/projects/skerne brochure.pdf | RRC report |
http://http://en.wikipedia.org/wiki/River Skerne | Wikipedia link |