The Brentford Marina lock can be opened from approximately 2½ hours before high water to up to 2½ hours after high water (HW±2½). Boats with deeper draughts may only be able to enter and leave between approximately 2 hours before and after high water. Low water is approximately 7 to 8 hours after High Water.
The Lock is hydraulic and has working dimensions of approximately 9.8 metres (32 feet) and 4.8 metres (16 feet).
Boats over 32 feet enter at high water on free-flow by prior arrangement.
Note:
Free-flow can be used when tide is higher than 6.7 meters and approximately 30 minutes before and 15 minutes after high tide.
The outside pontoon is available for short term mooring when entry is not possible through lock.
