| Aqueduct Lock | |
|---|---|
 Looking south, the lock and the lock-keeper's cottage | |
 | |
| 51°43′19″N 0°00′51″W / 51.721937°N 0.014299°W | |
| 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 | 5 feet 6 inches (1.7 m) |
| Distance to Bow Creek | 15.5 miles (24.9 km) |
| Distance to Hertford Castle Weir | 10.8 miles (17.4 km) |
Aqueduct Lock (Number 8) is a lock on the River Lee Navigation close to Turnford.