River Lee - Seventy Acres Lake
River Lee The River Lee continues to flow south towards the Thames. Running parallel to it are the River Lee Navigation, and the Flood Relief Channel. Post to the north Holyfield Lake Post to the west Cheshunt Post to the south Hooks Marsh Holyfield Marsh Electric Transformer Station . Built in 1974 on an area that was once fields on the edge of Holyfield Marsh. The site was probably excavated as part of the gravel extraction industry in the 1950s and backfilled in the 1970s. River Lee Navigation Cheshunt Lock . Built 1768. Rebuilt 1922/. In 19 th it was known as Cheshunt Mill Lock and also Hundred Acre Lock. Lock house altered in the 1870s, described in 1900 as ‘a wretched structure’ and was replaced on a different site in 1909. This was burnt down and demolished in the 1970s, some foundations remain. Seventy Acres Lake Gravel extraction pit, flooded and in recreational use. National Bittern Information Point . Up to the 17th bitterns were widespread in Eng