Case study:Butter Hill Phase 2
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- 1 Project overview
- 2 Image gallery
- 3 Catchment and subcatchment
- 4 Site
- 5 Project background
- 6 Reasons for river restoration
- 7 Measures
- 8 Monitoring
- 9 Additional documents and videos
- 10 Additional links and references
- 11 Supplementary Information
|Project web site|
|Themes||Fisheries, Habitat and biodiversity, Social benefits, Urban|
|Main contact forename||Tim|
|Main contact surname||Longstaff|
|Main contact user ID|
|Contact organisation||Wandle Trust|
|Contact organisation web site||http://www.wandletrust.org|
|Parent multi-site project|
| This is a parent project
encompassing the following
This Project is part of a larger scheme with the overall aim of establishing a population of brown trout in the Carshalton arm of the River Wandle for the first time in over 80 years. For more background on this larger scheme, please refer to the parent project "River Wandle Restoration Project".
The weir at Millpond Place was notched to restore natural flow to the upstream channel. The over-wide and straightened channel was narrowed and a new bank line created with the help of volunteers by using chestnut faggot bundles pinned into place with chestnut stakes.
Silt from the channel was then moved behind the faggot bundles to create a new bank. Brash and topsoil were added to stabilise this new bank and 1000 native aquatic plants and three planted coir rolls were installed to further stabilise it with the help of volunteers.
Seventy tonnes of gravel were added to the newly modified channel and carefully distributed to create riffles, pools and bars giving rise to a variety of new habitat areas for fish, invertebrates and plants. Further habitat works were carried out in channel with volunteers, adding Large Woody Debris flow deflectors to diversify the flow. Two “Dragon’s Tooth” berms were created by installing logs and brash bundles. Almost 100 volunteers were involved over several weekends.
Monitoring surveys and results
Please see the parent project (River Wandle Restoration Project) for the final results on this work, combined with the other phases.
- Urban nature of the site
- Getting some local, neighbouring residents to understand and buy in to the project was difficult
Catchment and subcatchment
Select a catchment/subcatchment
Cost for project phases
Reasons for river restoration
Hydromorphological quality elements
Biological quality elements
Physico-chemical quality elements
Additional documents and videos