Dollis Brook runs through the London Borough of Barnet in north London. It is a tributary of the River Brent, which is itself a tributary of the River Thames. The Dollis Valley Greenwalk follows almost all of Dollis Brook, apart from a short section at the beginning which passes through private land, and the London Loop follows it as far as Barnet Lane. The name Dollis is probably derived from the Middle English word 'dole', meaning the shares of land in the common field.
The London Borough of Barnet, located on the northern periphery of London and having much of the area within its boundaries in the Metropolitan Green Belt, has many parks and open spaces. In addition there are large areas taken over by cemeteries and golf courses, and part of Hampstead Heath.
Folly Brook is a 2+1⁄4-mile (3.6 km) long brook in the London Borough of Barnet. It is a tributary of Dollis Brook, which is a tributary of the River Brent, which is a tributary of the River Thames. Folly Brook is lined for most of its length by narrow strips of woodland and scrub, with a good variety of trees and shrubs. It is one of the best streams in Barnet for small aquatic invertebrates, including several species of caddis fly and a stonefly, which are only found in unpolluted waters.
The Silk Stream is a brook just over 4 kilometres (2.5 mi) long in the London Borough of Barnet. It is one of the major components of the Blue Ribbon Network.
Darland's Lake Nature Reserve is a nature reserve south of Totteridge Village in Barnet, England. It is owned by the London Borough of Barnet and was managed from 1971 by the Hertfordshire and Middlesex Wildlife Trust, and more recently by the borough council. In 2007 the council spent £215,000 on repairing the dam and other works, and then proposed leasing the reserve to the Wildlife Trust. The transfer did not take place and in September 2017 a trust was set up by the London Wildlife Trust and local residents associations which took over the management of Darland's Lake. In 2020 Darlands Conservation Trust launched an appeal to raise £450,000 for excavation to prevent the lake drying up.
Burtonhole Lane and Pasture is a 6.5-hectare (16-acre) Site of Borough Importance for Nature Conservation, Grade II, between Mill Hill and Totteridge in the London Borough of Barnet. It consists of Burtonhole Lane between Partingdale Lane and Burtonhole Close, a footpath east from Burtonhole Lane towards Folly Brook, two fields south of the footpath, and a narrow belt of privately owned woodland north of the footpath. Burtonhole Brook, a tributary of Folly Brook, crosses Burtonhole Lane and the fields.
Scratchwood is an extensive, mainly wooded, country park in Mill Hill in the London Borough of Barnet. The 57-hectare site is a Site of Metropolitan Importance for Nature Conservation and together with the neighbouring Moat Mount Open Space. It is a Local Nature Reserve.
Copthall Railway Walk and Copthall Old Common is a 9-hectare (22-acre) Site of Borough Importance for Nature Conservation, Grade II, in Mill Hill in the London Borough of Barnet.
Totteridge Green is a five hectare Site of Borough Importance for Nature Conservation, Grade II, in Totteridge in the London Borough of Barnet. It is also registered common land.
Edgware Way Grassland or Edgware Way Rough is a 6.7-hectare (17-acre) Site of Metropolitan Importance for Nature Conservation in Edgware in the London Borough of Barnet. It is traversed by Edgwarebury Brook and contains traces of a planned railway viaduct and embankment. This was part of a planned extension of the Northern line from Edgware to Bushey, which was cancelled when the introduction of the Green Belt after the Second World War led to the cancellation of the developments which the railway was to serve. Part of the site is the Environment Agency's Edgwarebury Park Flood Storage Area.
Stoneyfields Park is a three-hectare public park in The Hale in the London Borough of Barnet.
Mill Hill Old Railway Nature Reserve is a 2.3-hectare (5.7-acre) Site of Borough Importance for Nature Conservation, Grade II, in Mill Hill in the London Borough of Barnet.
Mutton Brook is a stream which runs between East Finchley and Hendon in the London Borough of Barnet. It is a tributary of the River Brent, which is itself a tributary of the River Thames.
Friary Park is a nine hectare formal Edwardian park in Friern Barnet in the London Borough of Barnet.
Clitterhouse Recreation Ground or Clitterhouse Playing Fields is a park and Site of Local Importance for Nature Conservation in Brent Cross in the London Borough of Barnet. It is a large area of mown grass with a children's playground, bordered by thick hedges. Clitterhouse Stream, a tributary of the River Brent, runs along its eastern border.
Brent Park is a small public park of 2.24 hectares in Hendon in the London Borough of Barnet. It is part of the 'Lower Dollis Brook' Site of Borough Importance for Nature Conservation, Grade II.
Clay Lane is a one kilometre long public footpath and bridle way in Edgware in the London Borough of Barnet. It is a Site of Local Importance for Nature Conservation.
Burnt Oak Brook is a one-mile-long stream between Mill Hill and Burnt Oak in the London Borough of Barnet. It is a tributary of the Silk Stream, which is a tributary of the River Brent, which is a tributary of the River Thames.
Edgwarebury Brook is a small stream in Edgware in the London Borough of Barnet. It is a tributary of Deans Brook, which is a tributary of the Silk Stream, which is a tributary of the River Brent, which is a tributary of the River Thames.
