About the reserve

Herriott’s Pool Nature Reserve is managed by Avon Wildlife Trust, in partnership with Bristol Water, and forms the southernmost part of Chew Valley Lake.

Breeding birds include great crested and little grebe, gadwall, tufted duck, shoveler and pochard. Hobbies often feed over the area in late summer.

When the water level falls, the mud attracts waders such as dunlin, ringed plover and green sandpipers.

Summer sees large populations of dragonflies hunting over the water. These include ruddy darters and, later in the summer, migrant hawkers.

Wintering wildfowl include important numbers of shoveler, gadwall, teal and tufted duck. Goosander, great crested grebe and cormorant also occur in large amounts.

The reedbeds are a vital autumn feeding station for reed and sedge warblers prior to their migration. The winter gull roost is a spectacular sight with up to 50,000 or more, mostly of black-headed, common and Mediterranean gull.

Chew Valley Lake often attracts rare birds, including osprey, the scarcer grebes, and an American wader or duck appears most years.

There is a visitor centre and cafe run by Bristol Water at the picnic site near the dam.