Rickmansworth, Stocker's Lake - geograph

Stocker's Lake is an old flooded gravel pit of approx 90 acres (37.5ha) at

Rickmansworth Rickmansworth () is a town in southwest Hertfordshire, England, about northwest of central London and inside the perimeter of the M25 motorway. The town is mainly to the north of the Grand Union Canal (formerly the Grand Junction Canal) and ...

, Hertfordshire, England, within the Colne Valley Regional Park which is designated as a Local Nature Reserve. The lake is owned by

Affinity Water Affinity Water is a UK supplier of drinking water to 3.8 million people in parts of London, eastern and south eastern England. The company is owned by a consortium of Allianz, HICL and DIF Tamblin. Affinity Water was established through the pur ...

and managed by the

Herts and Middlesex Wildlife Trust Herts and Middlesex Wildlife Trust manages over 40 nature reserves covering nearly north of London, in Hertfordshire and the historic county of Middlesex, part of which is divided between the London boroughs of Barnet, Enfield, Harrow and Hill ...

assisted by the Friends of Stocker's Lake.

Environment

The lake has a number of small islands and is surrounded by mixed woodland,

alder Alders are trees comprising the genus ''Alnus'' in the birch family Betulaceae. The genus comprises about 35 species of monoecious trees and shrubs, a few reaching a large size, distributed throughout the north temperate zone with a few sp ...

carr and

willow Willows, also called sallows and osiers, from the genus ''Salix'', comprise around 400 speciesMabberley, D.J. 1997. The Plant Book, Cambridge University Press #2: Cambridge. of typically deciduous trees and shrubs, found primarily on moist so ...

scrub. It is almost adjacent to Springwell Lake reedbeds.

Wildlife

Situated on the north-south flyway of the

Colne Valley The Colne Valley is a steep sided valley on the east flank of the Pennine Hills in the English county of West Yorkshire. It takes its name from the River Colne which rises above the town of Marsden and flows eastward towards Huddersfield. ...

, the reserve is especially attractive to birds both in spring, when many migratory

passerines A passerine () is any bird of the order Passeriformes (; from Latin 'sparrow' and '-shaped'), which includes more than half of all bird species. Sometimes known as perching birds, passerines are distinguished from other orders of birds by th ...

pass through, and in winter, when the lake is full of

waterfowl Anseriformes is an order of birds also known as waterfowl that comprises about 180 living species of birds in three families: Anhimidae (three species of screamers), Anseranatidae (the magpie goose), and Anatidae, the largest family, which i ...

Common tern The common tern (''Sterna hirundo'') is a seabird in the family Laridae. This bird has a circumpolar distribution, its four subspecies breeding in temperate and subarctic regions of Europe, Asia and North America. It is strongly migrator ...

s nest on specially constructed rafts moored on the lake, and the

heronry A heronry, sometimes called a heron rookery, is a breeding ground for herons. Notable heronries Although their breeding territories are often on more protected small islands in lakes or retention ponds, herons breed in heronries (or also calle ...

is the largest in Hertfordshire. Over 60 species of birds are recorded to breed.

Access

The reserve (at ) is accessible at all times. Entrance to the reserve is via Rickmansworth Aquadrome, where there is car parking. Alternative parking is possible along Springwell Lane.

References

{{Herts and Middlesex Wildlife Trust Local Nature Reserves in Hertfordshire Geography of Three Rivers District Herts and Middlesex Wildlife Trust reserves Rickmansworth