Property:Project summary
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This is a property of type Text.
T
To improve flood risk management and habitat along the Thamesmead canals and deliver East London Green Grid objectives Led by Environment Agency in collaboration with London Borough of Bexley & Greenwich +
L
To improve habitat on the River Thame for barbel and associated fish community +
B
To improve habitat, fish passage, spawning and recruitment opportunities, native fish stocks and implement Water Framework Directive improvements to achieve Good Ecological Status within the catchment. Also, to decrease any risk of the property flooding, improve the ecology, repair the damage from historic dredging and land use of the grounds and create sympathetic use of the pasture land.
- Introduction of naturally occurring LWD to encourage flow diversity and increase channel sinuosity +
L
To improve the WFD status of Wyke Beck and Wortley Beck in Leeds. In particular to address channel morphology issues by re-naturalising the channel, creating new habitats and addressing water quality issues such as sediment from runoff +
F
To improve the ecology of the Fairham Brook working with local landowners. Remove branches from trees and bushes that have the potential to snag debris during flood events and clear a central channel in areas where reed and reed mace fill the brook bed. Install pre-planted coir rolls to create pinch points and speed up water flows, allowing the riverbed to be scoured, uncovering gravels which are used by breeding fish. Install a hard cattle drink to reduce the amount of soil leaching into the brook. Install a rock ramp to allow fish passage over a weir, which itself created a wildlife friendly pool.
Historic deepening and straightening of the brook’s channel has led to low ecological value through the straightened section. A new management regime is in place in addition to this project to implement habitat enhancements.
Future plans aim to restore the fen habitat by installing a number of ditches and ponds to re-wet the reserve, this is being taken forward by Nottinghamshire Wildlife Trust. +
B
To improve the riparian through with an improved mowing regime<br>
Plug planting of marginal species<br>
Selective tree management to allow more light into the channel<br>
Potential to dig a new meander<br>
Enlarge the off-line reedbed to create a backwater for spawning fish and habitat value<br>
Put flow deflectors in the channel to improve in stream processes<br>
The Beverley Brook flows through Barnes Common and has artificially low flows, little in channel habitat and no riparian buffer zones. An off-reed bed has been dug which was successful. +
A
To improve the river Ancholme and tributaries for biodiversity, fish, geomorphological and pollinator reasons, improve chalk streams and to contribute to improved WFD status +
N
To improve the river Nene and tributaries for biodiversity, fish and geomorphological reasons, and to contribute to improved WFD status +
W
To improve the river Welland and tributaries for biodiversity, fish and geomorphological reasons, and to contribute to improved WFD status +
To improve the river Witham and tributaries for biodiversity, fish and geomorphological reasons, improve chalk streams and to contribute to improved WFD status +
C
To increase natural recruitment of fish in the River Rother catchment by cleaning gravels, reducing sedimentation by putting flow deflectors in the river, creating more diverse flows in the river, providing more suitable areas for anglers to fish etc +
R
To meet targets set by the Water Framework Directive (WFD), the Environment Agency completed a programme of habitat improvement works on the River Idle which is a major tributary to the River Trent. This project concerns Hallcroft Weir (AKA as Tiln Weir) in Retford, Nottinghamshire (SK69275 83396).
Hallcroft Weir, located on the River Idle in Nottinghamshire is approximately 30-35km from the confluence at which the Idle meets the tidal Trent. Not including the sluice / pumping station control structures at the confluence, Hallcroft weir is the first physical barrier encountered by upstream migrating fish. Although originally passable to some species of fish, a combination of head loss and flow limited certain species ability to pass the weir.
Hallcroft Weir is an Environment Agency owned asset. The weir is a broad crested type weir spanning the full channel width and running perpendicular to the flow. Downstream of the weir is a non-official rock ramp extending from approximately 1m downstream of the weir toe for 15m.
The weir at Hallcroft prevented free movement of fish, particularly in an upstream direction. It was impassable to many species of fish under most flow conditions due to velocity and depth of flow.
The project aim was to increase the migratory ability of all fish species in the River Idle and in particular eels. This will lead to a more sustainable population within the catchment as the work will allow the migrating eels and other fish species to reach more upstream habitat.
The total project costs a 260,000GBP. +
M
To monitor elvers reaching Merton Abbey Mills; to install an elver pass on the side of the weir which most elvers use Tilting weir presents a complete barrier to fish passage, likely including eels +
R
To move the channel away from residential property and create a low flow channel with diverse marginal habitat and small offline wetland habitat. The River Shuttle through Marlborough Park had extensive bank erosion that was beginning to encroach on the back of residents gardens.<br>
First Phase Complete 2010, Next Phase underway later 2011 +
To move the channel away from the allotments and create a more diverse marginal habitat using pre-planted coir rolls. The River Shuttle downstream of Love Lane was eroding into adjacent allotments. +
D
To re-distribute the existing bed material to create meanders, pool - riffle sequences, gravel bars and islands. The aim is to acheive a chalk river with a variety of habitats within a low-flow, self cleansing, sinuous channel. Improve fish spawning habitat. The river in this location is generally flat, wide and shallow and under normal discharge it cannot sustain energised flow. Additionally, the channel is extremely heavily shaded in parts, preventing aquatic plant growth. There is very little in-channel natural habitat variation and the river has no ability to re-habilitate itself and re-establish chalk stream habitat. <br>
Funding - Environment Agency Working in partnership with Dartford Borough Council who are upgrading the footpath alongside the river. +
A
To re-establish natural geomorphological features within the Pymmes Brook, including the creation of natural instream features, natural banks, wet berms, potentially wetland scrapes and wet grassland i.e. reconnecting the river with the surrounding habitats, its floodplain. The first step would be to carry out a feasibility study of the Pymmes Brook though Arnos Park, including the surrounding landscape, defining the potential habitats which could be create and where. This would also give an idea of the cost and time scales involved. Depending on the outcomes of the feasibility study, a topography study of the area maybe needed if the its decide that wet scrapes and marshy areas should be created, thereby defining the works that would be needed to create these areas. An application has been made to the London Mayors Parks Programme (need to see if this project gets funding from this). Get partners together discuss desires for the park and constraints, design and estimate costs and estimate the finances available to the project.
The North East Thames River restoration document highlights this area as having potential for full river restoration. The works should include the removal of all impounding structures and artificial embankments. Once this has been completed there should be a low flow channel created which meanders its way along the natural course of the Pymmes (may not be the current course, decided by a topographical study). Outside, the low flow channel a peak flow course should be created, this should include wet berms and setback flood defences to allow the river to naturally flood. These areas should contain back waters, wet berms, natural erosional cliff faces and wetland scrapes, which would significantly improve the biodiversity value of the area and the amenity value to local residents.
The Pymmes Brook is a clay-based river in a high-energy river catchment. Sections of the Pymmes Brook that resemble naturalised river forms exhibit characteristic features of a high-energy system, meanders, small meander cliffs, gravel bars and pool. The river through Arnos Park has been resectioned, constricted, has a concreted lining (in places) and contains a number of weirs which impound and stagnate the water, resulting in extremely poor water quality (GQA class E) as well as a lose of natural morphological features. Arnos Park has been designated as SINC Borough level 2 for it ancient woodland and damp grassland, the pymmes runs through the middle of the park and currently provides little ecological value, while the potential of the river remains huge. A Flood Risk Management project is being investigated for wider benefits and includes potential significant enhancements to this section of river.
R
To re-wet Snakeholm Meadows, restoration of floodplain and restoration of a 250m long stretch of West Beck +
N
To reconnect twaite shad, an Annexe ii species associated with the Severn Estuary Sac to 253 km of historic spawning habitat on the River Teme and River Severn. Following a 4 year development phase UTS has secured £20 million funding from HLF and EU LIFE +
W
To remove an obsolete weir on the Pymmes Brook to restore hydro-morphological processes and connectivity of the river corridor. An area of urban deprivation where the Envionment Agency is working with the local Authority to improve the area of Tile Kiln Park in Enfield. +