Local Wildlife Site

Accessible Sites of Importance for Nature Conservation

Lea Valley
Borough: Enfield, Hackney, Haringey, Newham, Tower Hamlets, Waltham Forest
Grade: Metropolitan
Access: Free public access (part of site)
Area: 947.3 ha

Description

The Lea Valley is a large composite Metropolitan site, including the River Lee Navigation and the River Lea as well as their associated watercourses and adjacent wetlands downstream to the tidal limit in Tower Hamlets. Below this, the river is included in the River Thames and tidal tributaries Metropolitan Site. The associated areas in the south are Walthamstow Marshes and Reservoirs, and the new Waterworks Nature Reserve. Walthamstow Marshes and Walthamstow Reservoirs are both Sites of Special Scientific Interest, also included within an Important Bird Area (RSPB Birdlife International). Walthamstow Reservoirs lie within the Lea Valley Special Protection Area (EU Birds Directive), and is also a wetland of international importance under the Ramsar Convention. Walthamstow Marshes and Waterworks Nature Reserve both won Green Flag Awards again for 2022. The Lea Valley Walk passes through the site.

Wildlife

The watercourses and drainage ditches support a diverse range of water plants, including many uncommon species. Among these are river and tubular water-dropwort, whorl-grass, arrowhead, flowering-rush and stream water-crowfoot. A very rare plant indeed has recently been discovered beside a ditch on Walthamstow Marshes - creeping marshwort. This is the second of only two sites remaining in the entire country. Brookweed and blunt-flowered rush (both very rare in London) grow nearby. The wet marshy grassland supports marsh arrowgrass, adder's-tongue fern and the ‘graceful' sedge - a rare hybrid between slender-tufted and lesser pond-sedges. Drier neutral grassland supports bee orchid, grass vetchling and the nationally scarce yellow vetchling. The Lea Valley is immensely important for its birdlife. The valley holds internationally important numbers of wintering gadwall and shoveler. Breeding birds include kingfisher, sand martin, little ringed plover, skylark and yellow wagtail. Large numbers of swifts and house martins regularly forage over the waterbodies in summer. London's largest grey heron colony breeds on several of the wooded islands in Walthamstow Reservoirs. The Chingford and Walthamstow Reservoirs are a major refuge for national and regionally important numbers of waterfowl, including tufted duck, great crested grebe, goosander and goldeneye. Nationally rare wintering and passage species are regularly recorded. The site is very important for the specially-protected water vole, which is locally abundant. The specially-protected great crested newt also occurs and fish include the declining bullhead. The reed beds and other riverside habitats support a number of rare insects. The reedbeds and other riverside habitats support a number of rare insects. These include several rare wetland moths, such as the dotted fan-foot, Webb's wainscot and brown-veined wainscot. The emerald and red-eyed damselflies, both scarce in London, also fly here. Otters have returned to the Lee in recent years, and there have been two records in Tower Hamlets.

Facilities

Information (including at the Three Mills Museum); car parking; cycle paths; fishing; sailing; horse riding; nature trail; sculptures/ monuments; waymarked walking routes
No photo yet available for this site

No photo yet available for this site

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More information on GiGL’s SINC dataset can be found here.

Additional information, including other site designations and species recorded onsite and nearby, can be provided in community and client data search reports. Request information here.