Case study:River Idle Restoration Project: Difference between revisions
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|Caption=Installed Coir rolls increasing flow | |Caption=Installed Coir rolls increasing flow | ||
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|Caption=The River Idle was causing severe bank erosion adjacent to a public footpath between SK69449 83331and SK69412 83400. The erosion was also introducing silt into the river that would affect water quality and smother gravels used by fish for spawning. | |Caption=The River Idle was causing severe bank erosion adjacent to a public footpath between SK69449 83331and SK69412 83400. The erosion was also introducing silt into the river that would affect water quality and smother gravels used by fish for spawning. | ||
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|File name=Willow Revetment2.jpg | |File name=Willow Revetment2.jpg | ||
|Caption=Willow stakes were installed into the base of the river bank and then willow was woven around the stakes to create a fence that would protect the river bank from further erosion. The area between the fence and the river bank was back-filled with brash. In time silt will accumulate allowing vegetation to colonise, effectively reinstating the integrity of the bank. A willow tree was removed from the opposite bank to allow the river to function naturally and erode the opposite bank. | |Caption=Willow stakes were installed into the base of the river bank and then willow was woven around the stakes to create a fence that would protect the river bank from further erosion. The area between the fence and the river bank was back-filled with brash. In time silt will accumulate allowing vegetation to colonise, effectively reinstating the integrity of the bank. A willow tree was removed from the opposite bank to allow the river to function naturally and erode the opposite bank. | ||
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|File name=Willow Revetment3.jpg | |File name=Willow Revetment3.jpg | ||
|Caption=This ‘living’ revetment creates bankside habitat. Each winter the willow is cut to ensure that tit does not become an obstacle within the river and the resultant ‘rods’ are used to make rustic garden furniture and willow baskets. | |Caption=This ‘living’ revetment creates bankside habitat. Each winter the willow is cut to ensure that tit does not become an obstacle within the river and the resultant ‘rods’ are used to make rustic garden furniture and willow baskets. | ||
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|File name=Newly created wetland with establishing reedbed.jpg | |||
|Caption=A wetland was created at Blaco Hill Farm (SK70727 87619) to remove phosphate from effluent discharged from Lound Sewage Treatment Works. Despite effluent from Lound STW meeting the required standard it does contain significant levels of phosphate and nitrate which is entering the River Idle at is entering the River Idle reducing water quality and encouraging algal blooms. Nottinghamshire Wildlife Trust, AECOM, Severn Trent Water and Lee Farms have been working in partnership during the last 3 years to try and improve this issue. Harworth Estates kindly provide reed / rhizomes for the wetland. | |||
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{{Image gallery end}} | {{Image gallery end}} | ||
Revision as of 12:35, 26 June 2015
This case study is pending approval by a RiverWiki administrator.
Location: 53° 23' 11.69" N, 0° 55' 52.52" W
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Project overview
| Status | Complete |
|---|---|
| Project web site | |
| Themes | Environmental flows and water resources, Fisheries, Flood risk management, Habitat and biodiversity, Land use management - agriculture, Water quality |
| Country | England |
| Main contact forename | David |
| Main contact surname | Newborough |
| Main contact user ID | |
| Contact organisation | Environment Agency |
| Contact organisation web site | http://https://www.gov.uk/government/organisations/environment-agency |
| Partner organisations | Nottinghamshire Wildlife Trust |
| Parent multi-site project | |
| This is a parent project encompassing the following projects |
No |
Project summary
Edit project overview to modify the project summary.
The project was in collaboration with the Nottinghamshire Wildlife Trust to establish a partnership that will enable joint working and delivery of high quality habitat restoration along the River Idle and its tributaries.
The River Idle was identified as having significant potential for high quality habitat restoration and for the substantial improvement of its water quality to meet WFD objectives. There were several strategies in existence for the Idle and many partners interested in the catchment. We were also finalising the Isle of Axholme Flood Risk Management Strategy. With so many organisations keen to be involved in the enhancement of the river, the project established an overarching Management Group, which brought together partners to ensure efficient and complementary working towards a shared vision. Such a "joined-up" approach offered better opportunities for innovation and access to funding than working in isolation.
The catchment partnership will continue to take forward actions to improve the river and realise multiple benefits.
Monitoring surveys and results
Edit project overview to modify the Monitoring survey and results.
Working with landowners to create species-rich grassland buffer strips to reduce diffuse agricultural pollution from adjacent arable land through absorption of agricultural run-off. We installed hinged large woody debris to improve channel conditions for benefits for fish spawning and aerate flows. These will hopefully start to show an improvement from a WFD perspective through the habitat improvements.
The projects main success has been the establishment of the Idle Management Partnership Group. Although the group has taken time to develop and have a clear purpose, it has been beneficial to have landowners as well as partner organisations meeting together to discuss what's best for the river.
Lessons learnt
Edit project overview to modify the lessons learnt.
This has been a 3-year project. The partnership has taken that time to become established with clear objectives for the future. Partnerships of this size do take time.
Image gallery
Hinged woody debris structures along the River Idle between SK70437 84406 and SK71482 86530. This narrows the river channel slightly, increasing flow to reveal gravels and provide habitat diversity for water invertebrates and fish. Silt deposits build up behind the debris which become vegetated, further enhancing habitats within the river channel.
The landscape adjacent to the River Ryton at Priorswell lacks natural features. Twenty alder trees were planted along the river bank in order to create dappled shade to enhance habitat for fish. Alder is a native species to the UK that typically colonises riparian habitat. The trees will also enhance the aesthetics of the area for local residents who overlook and walk through the site. In time the trees will provide excellent wildlife habitat for a range of wildlife.
Willow stakes were installed into the base of the river bank and then willow was woven around the stakes to create a fence that would protect the river bank from further erosion. The area between the fence and the river bank was back-filled with brash. In time silt will accumulate allowing vegetation to colonise, effectively reinstating the integrity of the bank. A willow tree was removed from the opposite bank to allow the river to function naturally and erode the opposite bank.
A wetland was created at Blaco Hill Farm (SK70727 87619) to remove phosphate from effluent discharged from Lound Sewage Treatment Works. Despite effluent from Lound STW meeting the required standard it does contain significant levels of phosphate and nitrate which is entering the River Idle at is entering the River Idle reducing water quality and encouraging algal blooms. Nottinghamshire Wildlife Trust, AECOM, Severn Trent Water and Lee Farms have been working in partnership during the last 3 years to try and improve this issue. Harworth Estates kindly provide reed / rhizomes for the wetland.
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Catchment and subcatchment
Site
Project background
Cost for project phases
Reasons for river restoration
Measures
MonitoringHydromorphological quality elements
Biological quality elements
Physico-chemical quality elements
Any other monitoring, e.g. social, economic
Monitoring documents
Additional documents and videos
Additional links and references
Supplementary InformationEdit Supplementary Information
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