Stocker's Lake is an old flooded gravel pit of approx 90 acres (37.5ha) at Rickmansworth, Hertfordshire, England, within the Colne Valley Regional Park[1] which is designated as a Local Nature Reserve.[2][3]
The lake is owned by Affinity Water and managed by the Herts and Middlesex Wildlife Trust[4] assisted by the Friends of Stocker's Lake.[5]