Dobbs Weir is both a weir near Hoddesdon, Hertfordshire and an area of Roydon, Essex in England on the River Lea. It is well known for angling, outdoor beauty and watersports. It is overlooked by the Fish and Eels pub.
The weir is a popular fishery. In 2003, the then record Chub weighing 8.8 pounds was caught by Tim Archer. The fishery is owned by the Lee Valley Regional Park Authority and is currently (2012) controlled by the Carthagena Fishery. Day tickets are available.
Dobbs Weir has had a long history serving the watersports community, as the sluice gates after the v-drops could be changed according to the flow of the water. Especially in winter months after heavy rain the weir could be changed into a formidable feature used for whitewater training or playboating.
Since August 2003, British Waterways padlocked the sluice gates and watersports users have been forced to go elsewhere, since the site has been deemed unsafe and requires approximately £25,000 for the weir to be repaired.