Property:Project summary
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This is a property of type Text.
R
Regulated Tidal Exchange is the regulated exchange of seawater to an area behind fixed sea defences, through engineered structures (e.g. sluices, tide‐gates or pipes) to create saline or brackish habitats. This regulated tidal exchange project involved a combination of Working with Natural Processes (WWNP) and traditional measures to manage flood risk and create/restore habitat on the Sussex coast at Rye Harbour (Map 1).
* A secondary defence bund to protect low-lying communities
* Non-intervention shingle primary defence within a Special Area of Conservation (SAC)
* Creation of a tidal exchange to provide an intertidal habitat area landward of the primary defence
* Creation of a large tidal creek into the site to provide an important area of saltmarsh, creeks and intertidal mud (Photo 1)
* Saline lagoons and vegetated shingle created
* Coastal grazing marsh and ponds created on landward of the secondary defence
In November 2013, a tidal surge entered the habitat creation area, providing a large area of tidal storage, which was then gradually released via the new creek. The habitats are robust enough to respond positively to tidal changes and also provide a large area where water can be harmlessly stored.
The shingle beach is part of the Dungeness SAC and is Europe's largest area of coastal vegetated shingle. The huge diversity of plants and invertebrates makes this one of the country's most important sites for wildlife. +
S
Removal of a historic impounding structure on the River Test at Overton and the restoration of 400m of channel upstream. The reach include x2 crescent rock ramps to retain the head and spread it over a longer distance. +
T
Removal of extensive Himalayan Balsam. Plug planting and seeding subsequent bare earth banks. +
R
Removal of redundant concrete weir, bank re-profiling and creation of ponds and scrapes, reconnecting river with floodplain and lower flood levels +
S
Removal of sheet steel piling and reprofiling and naturalisation of the bank for 120m. Remaining sheet piling which cannot be removed will be brick clad and coir rolls placed at base of piling. Redevelopment of site for a Sainsburys supermarket on the banks of the River Lee.<br>
Funding and commitment to delivery. Flood Defence Consent has been granted and works are due to start on site imminently; Expected duration of works is 2 months. +
H
Removal of three weir structures, removal of concrete bank and bed protection works. The river is in a semi-natural state though concrete bank protection works have been undertaken in the past and the river bed has also been lined with concrete in places. Three concrete flumes (same as those stupidly put in Harrow Lodge Park) break to continuity of the river and probably are to deal with the change of plan form gradient.<br>Manholes were observed in close proximity to the watercourse, possibly indicating a sewer pipe. However, huge gains could be made within the confines of this space, although it may be that bank reprofiling would have to be adapted. Works to the left bank are constrained due to it being owned by numerous different people whose properties abut the watercourse. It is unclear if this has always been the case or whether land take has taken place over the years. +
M
Removal of toe boards to improve habitat and reduce flood risk. Beverley Brook and Coombe Brook flow through the golf course. Beverley Brook has toe boarding which the river is eroding behind. The river is almost devoid of inchannel features through the golf course. +
L
Removal of toe boards; removal of concrete walls; river edge planting; re-meandering; localised narrowing Channel uniform with natural bed and armoured banks. Lack of channel diversity and extended lengths of shallow water. Steep banks results in poor connectivity between river and adjacent land. +
Removal of toeboarding and check weirs to return the river to more natural geomorphological processes Previous NRA scheme installed a series of check weir's and toeboarding to control a precieved erosion problem. These have significantly reduced the quality and morphology of the river +
Removal of toeboarding to enable natural processes of erosion and deposition to talke place Removal of toeboarding along the river by Environment Agency Ops Delivery +
M
Removal or modification of Mill Road Weir, in conjunction with the weir on the associated side loop, to improve flows both on the main channel and side loop which could improve a significant length of river. Benefit in terms of fish passage. Improvement in flow for the benefit of aquatic plants such as ranunculus, and to allow for scour of gravels for the benefit of fish and invertebrates. Planting marginal vegetation. +
C
Remove barrier to fish movement. Improve sediment transfer +
W
Remove toe boarding along 2km of the Beverley Brook mostly within Wimbledon Common SSSI. £50K match funding came from Biffa/HLF +
M
Remove/modify or replace structure to enable eel passage into the river Quaggy. Could install a pumped bypass. Maintain gauging function. This is a critical depth gauaging weir for measuring water levels in the river Quaggy. The weir is a total barrier to upstream migration of eels and elvers. <br>
Funding - Possible Environment Agency Water Resources funding or Defra WFD funding. +
R
Removing Carleton Hall weir in the River Eamont, Eamont Bridge, Penrith, Cumbria
This project is part of the Cumbria River Restoration Strategy (RRS), a partnership project involving the Environment Agency, Natural England and the three Cumbrian Rivers Trusts - Eden Rivers Trust, West Cumbria Rivers Trust and South Cumbria Rivers Trust. The Cumbria RRS aims to create a healthier and more sustainable environment for both people and wildlife.
A feasibility study of the removal of this weir was undertaken by JBA Consulting in 2016 to identify the most appropriate option. All the necessary permissions and consents were then obtained and extensive consultation was undertaken. Local contractors were employed to undertake the ground works in August 2016.
For more details and to see a film of the removal please see the project page on our website http://www.edenriverstrust.org.uk/removing-weirs-eden +
Removing Sheepmount weir in the River Caldew, Carlisle, Cumbria
This project is part of the Cumbria River Restoration Strategy (RRS), a partnership project involving the Environment Agency, Natural England and the three Cumbrian Rivers Trusts - Eden Rivers Trust, West Cumbria Rivers Trust and South Cumbria Rivers Trust. The Cumbria RRS aims to create a healthier and more sustainable environment for both people and wildlife.
A feasibility study of the removal of this weir was undertaken by JBA Consulting in 2016 to identify the most appropriate option. All the necessary permissions and consents were then obtained and extensive consultation was undertaken. Local contractors were employed to undertake the ground works in August 2016.
For more details and to see a film of the removal please see the project page on our website http://www.edenriverstrust.org.uk/removing-weirs-eden +
Renaturation of former riverbeds was carried out at specific sections of the Goriški Brežiček and Tresenec streams. Both brooks were rerouted to their former meanders in the length
of more than 500 m each. +
L
Reports found that sections of the Lodge Burn through Coleraine flooded on a regular basis, particularly in Anderson Park and downstream of Millburn Road. A feasibility study was undertaken by Atkins to identify potential solutions to the flooding issue, which determined that a staged approach would be best for the implementation of flood alleviation works.
Phase 1 included the implementation of measures for flood alleviation through river channel improvements, to minimise flooding to a 1 in 100 year event.
WORKS:
1. Replacement culvert constructed, with floor embedded to upstream bed level. Low flow channel through culvert, to allow fish passage during low-flow periods.
2. In-situ improvement to old masonry culvert - aligned with replacement culvert upstream to improve flow conditions.
3. Flood wall construction between Railway Road Bridge and Brook Street Bridge.
4. New vegetated riverbanks alongside floodwall, for habitat enhancement. Rock ramp pool and weir fish pass constructed at outfall of Railway Road Bridge. New spawning areas created using existing bed material, boulders and gravels.
5. Removal of Anderson Park pond to restore natural course of river, facilitate free fish passage and allow for natural sediment transport to be restored.
6. Diversion of large water main and supporting beam, which has been obstructing flow.
Vegetated riverbanks within flood wall (habitat enhancement). +
R
Restoration measures implemented along a 2000m section included profile regrading, introduction of large woody debris, removal of invasive species, placement of gravels, cutting trees back, re-connection to adjacent floodplain, creation of wetlands and narrowing of the channel to reintroduce sinuousity. +
B
Restoration measures in the downstream stretch of the river Regge are part of a larger restoration project for the whole river (see link above). The stream bed was raised and the river planform was made narrower and given a meandering trajectory. Dead wood was introduced and mowing was suspended to create a more varied ecosystem. The river corridor was largely converted from intensive agriculture to grassland, maintained by grazers. +