Waltham Town Lock
Waltham Town Lock Narrowboat Alder emerges from the downstream gate

51°41′15″N 0°00′45″W / 51.687423°N 0.012596°W / 51.687423; -0.012596
Waterway	River Lee Navigation
County	Hertfordshire Essex
Maintained by	Canal & River Trust
Operation	Manual
Length	85 feet (25.9 m)
Width	16 feet (4.9 m)
Fall	4 feet 3 inches (1.3 m)
Distance to Bow Creek	12.5 miles (20.1 km)
Distance to Hertford Castle Weir	13.8 miles (22.2 km)

Waltham Town Lock (No 11) is a lock on the River Lee Navigation at Waltham Cross, Hertfordshire. The lock is located in the River Lee Country Park which is part of the Lee Valley Park. The adjoining Showground site now known as the Broxbourne White Water Canoe Centre has been chosen to host the canoeing event in the 2012 Summer Olympics.^[1]

Flowing close to the lock is the River Lee Flood Relief Channel known as the Horsemill Stream at this point.

Public access

Vehicular access from A121 Station road to car parking close to lock.

Pedestrian and cycle access via the towpath which forms part of the Lea Valley Walk

Public transport

Bus services; 211, 212, 213, 240, 250, 251, 506.^[2]

Locks and weirs on the River Lea, England

Locks and weirs on the River Lea, England
Counties	Bedfordshire Hertfordshire Essex Greater London
Locks	Hertford Lock Ware Lock Hardmead Lock Stanstead Lock Feildes Weir Lock Dobbs Weir Lock Carthagena Lock Aqueduct Lock Cheshunt Lock Waltham Common Lock Waltham Town Lock Rammey Marsh Lock Enfield Lock Ponder's End Lock Pickett's Lock Stonebridge Lock Tottenham Lock Pond Lane Flood Gates Old Ford Lock Bow Locks
Weirs	Horns Mill Weir Hertford Castle Weir Hartham Weir Ware Weir Feildes Weir Dobbs Weir Carthagena Weir Kings Weir Newmans Weir Middlesex Filter Beds Weir
Hertford Union Canal (branch from Hackney Cut)	Hertford Union Bottom Lock No. 3 Hertford Union Middle Lock No. 2 Hertford Union Top Lock No. 1 Regent's Canal
Limehouse Cut (branch, at Bow Locks)	Bromley Stop Lock Britannia Stop Lock Limehouse Basin
Bow Back Rivers (branches of the Old River Lea)	Three Mills Lock City Mill Lock Carpenter's Road Lock Marshgate Lane Lock (defunct) Three Mills Wall River Weir (These rivers form the waterways within the 2012 Olympic Park - they flow into Bow Creek)