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Thames River: Oversight of Locks by Keeps

Guidelines Regarding the Lock Keeper Duty on the River Thames

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Thames River: Maintenance of Lock Safety Operations
Thames River: Maintenance of Lock Safety Operations

Thames River: Oversight of Locks by Keeps

River Thames Lock Schedules for August 2025

Boaters on the River Thames are advised of the lock keeper schedules for the weeks of Monday 28 July to Sunday 3 August 2025 and Monday 4 to Sunday 10 August 2025, which follow the August timetable.

During these weeks, lock keepers will be on duty from 9:00 AM to 1:00 PM and 2:00 PM to 6:30 PM. This schedule applies generally across the Environment Agency locks on the River Thames during August.

Lock Schedules for the Weeks of 28 July - 3 August and 4 - 10 August 2025

| Date Range | Morning Hours | Afternoon Hours | |--------------------------|---------------|-----------------| | 28 July – 3 August 2025 | 9:00 AM – 1:00 PM | 2:00 PM – 6:30 PM | | 4 – 10 August 2025 | 9:00 AM – 1:00 PM | 2:00 PM – 6:30 PM |

Outside these hours, boaters may need to operate locks themselves where permitted, following any displayed "self-service" signs.

Lock Keeper Schedules for Individual Locks

Here is a breakdown of the lock keeper schedules for several locks along the River Thames during the specified date ranges:

  • Sonning lock: Self-service from Monday 4 August to Friday 8 August, single sited on Saturday 9 August and Sunday 10 August.
  • Bell Weir lock: Single sited from Monday 4 August to Friday 8 August, self-service on Saturday 9 August and Sunday 10 August.
  • Cookham lock: Single sited from Monday 4 August to Friday 8 August, self-service on Saturday 9 August and Sunday 10 August.
  • St Johns lock: Single sited on Monday 4 August, self-service on Saturday 9 August and Sunday 10 August.
  • Culham lock: Single sited from Monday 4 August to Friday 8 August, single sited on Saturday 9 August and Sunday 10 August.
  • Iffley lock: Single sited from Monday 4 August to Friday 8 August, single sited on Saturday 9 August and Sunday 10 August.
  • Mapledurham lock: Single sited on Monday 4 August, self-service from Tuesday 5 August to Thursday 7 August, single sited on Friday 8 August, single sited on Saturday 9 August and single sited on Sunday 10 August.
  • Romney lock: Single sited from Monday 4 August to Sunday 10 August.
  • Radcot lock: Single sited from Monday 4 August to Friday 8 August, self-service on Saturday 9 August and Sunday 10 August.
  • Buscot lock: Self-service from Monday 4 August to Sunday 10 August.
  • Clifton lock: Single sited from Monday 4 August to Friday 8 August, self-service on Saturday 9 August and Sunday 10 August.
  • Grafton lock: Single sited from Monday 4 August to Sunday 10 August.
  • Benson lock: Single sited from Monday 4 August to Friday 8 August, single sited on Saturday 9 August and Sunday 10 August.
  • Molesey lock: Single sited from Monday 4 August to Friday 8 August, self-service on Saturday 9 August and Sunday 10 August.
  • Boulters lock: Self-service on Monday 4 August, self-service on Tuesday 5 August, single sited on Wednesday 6 August, single sited on Thursday 7 August, single sited on Friday 8 August, self-service on Saturday 9 August and single sited on Sunday 10 August.
  • Marlow lock: Self-service on Monday 4 August, single sited on Tuesday 5 August, single sited on Wednesday 6 August, single sited on Thursday 7 August, single sited on Friday 8 August, single sited on Saturday 9 August and single sited on Sunday 10 August.
  • Chertsey lock: Single sited from Monday 4 August to Friday 8 August, self-service on Saturday 9 August and Sunday 10 August.
  • Old Windsor lock: Single sited from Monday 4 August to Sunday 10 August.
  • Pinkhill lock: Single sited on Monday 4 August, self-service on Tuesday 5 August, self-service on Wednesday 6 August, self-service on Thursday 7 August, self-service on Friday 8 August, single sited on Saturday 9 August and self-service on Sunday 10 August.
  • Goring lock: Single sited from Monday 4 August to Friday 8 August, self-service on Saturday 9 August and Sunday 10 August.
  • Eynsham lock: Self-service from Monday 4 August to Sunday 10 August.
  • Boveney lock: Single sited from Monday 4 August to Friday 8 August, self-service on Saturday 9 August and Sunday 10 August.
  • Bray lock: Single sited from Monday 4 August to Friday 8 August, self-service on Saturday 9 August and Sunday 10 August.
  • Sandford lock: Self-service from Monday 4 August to Friday 8 August, single sited on Saturday 9 August and single sited on Sunday 10 August.
  • Shifford lock: Self-service on Monday 4 August, single sited on Tuesday 5 August, single sited on Wednesday 6 August, single sited on Thursday 7 August, single sited on Friday 8 August, self-service on Saturday 9 August and self-service on Sunday 10 August.
  • Godstow lock: Self-service on Monday 4 August, self-service on Tuesday 5 August, self-service on Wednesday 6 August, self-service on Thursday 7 August, self-service on Friday 8 August, single sited on Saturday 9 August and self-service on Sunday 10 August.
  • Penton Hook lock: Single sited on Monday 4 August, single sited on Tuesday 5 August, self-service on Wednesday 6 August, single sited on Thursday 7 August, single sited on Friday 8 August, self-service on Saturday 9 August and self-service on Sunday 10 August.
  • Hurley lock: Single sited on Monday 4 August, single sited on Tuesday 5 August, self-service on Wednesday 6 August, self-service on Thursday 7 August, self-service on Friday 8 August, self-service on Saturday 9 August and self-service on Sunday 10 August.
  • Shepperton lock: Single sited on Monday 4 August, self-service on Tuesday 5 August, single sited on Wednesday 6 August, single sited on Thursday 7 August, single sited on Friday 8 August, single sited on Saturday 9 August and single sited on Sunday 10 August.
  • Marsh lock: Single sited on Monday 4 August, self-service on Tuesday 5 August, single sited on Wednesday 6 August, single sited on Thursday 7 August, single sited on Friday 8 August, single sited on Saturday 9 August and single sited on Sunday 10 August.
  • Boulters lock: Self-service on Monday 4 August, self-service on Tuesday 5 August, single sited on Wednesday 6 August, single sited on Thursday 7 August, single sited on Friday 8 August, self-service on Saturday 9 August and single sited on Sunday 10 August.
  • Chertsey lock: Single sited on Monday 4 August, single sited on Tuesday 5 August, single sited on Wednesday 6 August, single sited on Thursday 7 August, single sited on Friday 8 August, self-service on Saturday 9 August and self-service on Sunday 10 August.
  • Old Windsor lock: Single sited on Monday 4 August, single sited on Tuesday 5 August, single sited on Wednesday 6 August, single sited on Thursday 7 August, single sited on Friday 8 August, single sited on Saturday 9 August and single sited on Sunday 10 August.
  • Pinkhill lock: Single sited on Monday 4 August, self-service on Tuesday 5 August, self-service on Wednesday 6 August, self-service on Thursday 7 August, self-service on Friday 8 August, single sited on Saturday 9 August and self-service on Sunday 10 August.
  • Goring lock: Single sited on Monday 4 August, single sited on Tuesday 5 August, single sited on Wednesday 6 August, single sited on Thursday 7 August, single sited on Friday 8 August, self-service on Saturday 9 August and self-service on Sunday 10 August.
  • Eynsham lock: Self-service on Monday 4 August, self-service on Tuesday 5 August, self-service on Wednesday 6 August, self-service on Thursday 7 August, self-service on Friday 8 August, self-service on Saturday 9 August and self-service on Sunday 10 August.
  • Boveney lock: Single sited on Monday 4 August, single sited on Tuesday 5 August, single sited on Wednesday 6 August, single sited on Thursday 7 August, single sited on Friday 8 August, self-service on Saturday 9 August and self-service on Sunday 10 August.
  • Bray lock: Single sited on Monday 4 August, single sited on Tuesday 5 August, single sited on Wednesday 6 August, single sited on Thursday 7 August, self-service on Friday 8 August, single sited on Saturday 9 August and self-service on Sunday 10 August.
  • Sandford lock: Self-service on Monday 4 August, self-service on Tuesday 5 August, self-service on Wednesday 6 August, self-service on Thursday 7 August, self-service on Friday 8 August, single sited on Saturday 9 August and single sited on Sunday 10 August.
  • Shifford lock: Self-service on Monday 4 August, single sited on Tuesday 5 August, single sited on Wednesday 6 August, single sited on Thursday 7 August, single sited on Friday 8 August, self-service on Saturday 9 August and self-service on Sunday 10 August.
  • Godstow lock: Self-service on Monday 4 August, self-service on Tuesday 5 August, self-service on Wednesday 6 August, self-service on Thursday 7 August, self-service on Friday 8 August, single sited on Saturday 9 August and self-service on Sunday 10 August.
  • Penton Hook lock: Single sited on Monday 4 August, single sited on Tuesday 5 August, self-service on Wednesday 6 August, single sited on Thursday 7 August, single sited on Friday 8 August, self-service on Saturday 9 August and self-service on Sunday 10 August.
  • Hurley lock: Single sited on Monday 4 August, single sited on Tuesday 5 August, self-service on Wednesday 6 August, self-service on Thursday 7 August, self-service on Friday 8 August, self-service on Saturday 9 August and self-service on Sunday 10 August.
  • Shepperton lock: Single sited on Monday 4 August, self-service on Tuesday 5 August, single sited on Wednesday 6 August, single sited on Thursday 7 August, single sited on Friday 8 August, single sited on Saturday 9 August and single sited on Sunday 10 August.
  • Marsh lock: Single sited on Monday 4 August, self-service on Tuesday 5 August, single sited on Wednesday 6 August, single sited on Thursday 7 August, single sited on Friday 8 August, single sited on Saturday 9 August and single sited on Sunday 10 August.
  • Boulters lock: Self-service on Monday 4 August, self-service on Tuesday 5 August, single sited on Wednesday 6 August, single sited on Thursday 7 August, single sited on Friday 8 August, self-service on Saturday 9 August and single sited on Sunday 10 August.
  • Chertsey lock: Single sited on Monday 4 August, single sited on Tuesday 5 August, single sited on Wednesday 6 August, single sited on Thursday 7 August, single sited on Friday 8 August, self-service on Saturday 9 August and self-service on Sunday 10 August.
  • Old Windsor lock: Single sited on Monday 4 August, single sited on Tuesday 5 August, single sited on Wednesday 6 August, single sited on Thursday 7 August, single sited on Friday 8 August, single sited on Saturday 9 August and single sited on Sunday 10 August.
  • Pinkhill lock: Single sited on Monday 4 August, self-service on Tuesday 5 August, self-service on Wednesday 6 August, self-service on Thursday 7 August, self-service on Friday 8 August, single sited on Saturday 9 August and self-service on Sunday 10 August.

Teddington Lock

Teddington Lock operates a 24-hour lock keeper service year-round, but currently may have navigation restrictions, so check relevant notices if planning to use it.

Changes and Updates

For any changes due to river conditions or staffing updates, check the Environment Agency or GOV.UK River Thames lock service pages before travel.

During the mentioned weeks of August 2025, boaters can expect self-service operating hours at various locks along the River Thames, as per the individual lock schedules described. It is crucial to note that the financing and maintenance of these locks fall under the jurisdiction of the industry sector, specifically the Environment Agency. Additionally, boaters should be aware that Teddington Lock offers a 24-hour lock keeper service year-round, though navigation restrictions may apply, making timely consultation of relevant notices necessary for smooth travel.

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