The Environment Agency provides advice for boaters using the River Thames by displaying warning 'boards' at each of the River Thames Locks. The conditions below are provided by the Environment Agency and represent the current state of the warning boards at the locks.
| Reach | Current Conditions |
|---|---|
| Upstream of St John's Lock 27th March 2026 10:59 |
No Stream Warnings |
| St John's Lock to Buscot Lock 27th March 2026 10:59 |
No Stream Warnings |
| Buscot Lock to Grafton Lock 27th March 2026 10:59 |
No Stream Warnings |
| Grafton Lock to Radcot Lock 27th March 2026 10:59 |
No Stream Warnings |
| Radcot Lock to Rushey Lock 31st March 2026 11:21 |
No Stream Warnings |
| Rushey Lock to Shifford Lock 31st March 2026 11:21 |
No Stream Warnings |
| Shifford Lock to Northmoor Lock 31st March 2026 11:21 |
No Stream Warnings |
| Northmoor Lock to Pinkhill Lock 31st March 2026 11:21 |
No Stream Warnings |
| Pinkhill Lock to Eynsham Lock 31st March 2026 11:21 |
No Stream Warnings |
| Eynsham Lock to King's Lock 31st March 2026 11:21 |
No Stream Warnings |
| King's Lock to Godstow Lock 31st March 2026 11:21 |
No Stream Warnings |
| Godstow Lock to Osney Lock 13th April 2026 09:18 |
No Stream Warnings |
| Osney Lock to Iffley Lock 2nd April 2026 10:49 |
No Stream Warnings |
| Reach | Current Conditions |
|---|---|
| Iffley Lock to Sandford Lock 23rd March 2026 10:43 |
No Stream Warnings |
| Sandford Lock to Abingdon Lock 23rd March 2026 10:43 |
No Stream Warnings |
| Abingdon Lock to Culham Lock 23rd March 2026 10:43 |
No Stream Warnings |
| Culham Lock to Clifton Lock 23rd March 2026 10:43 |
No Stream Warnings |
| Clifton Lock to Day's Lock 22nd March 2026 10:04 |
No Stream Warnings |
| Day's Lock to Benson Lock 22nd March 2026 10:04 |
No Stream Warnings |
| Benson Lock to Cleeve Lock 21st March 2026 10:39 |
No Stream Warnings |
| Cleeve Lock to Goring Lock 21st March 2026 10:39 |
No Stream Warnings |
| Goring Lock to Whitchurch Lock 22nd March 2026 10:04 |
No Stream Warnings |
| Whitchurch Lock to Mapledurham Lock 20th March 2026 13:22 |
No Stream Warnings |
| Mapledurham Lock to Caversham Lock 29th March 2026 10:46 |
No Stream Warnings |
| Upstream of Blake's Lock 3rd May 2026 09:12 |
No Stream Warnings |
| Caversham Lock to Sonning Lock 29th March 2026 10:46 |
No Stream Warnings |
| Sonning Lock to Shiplake Lock 21st March 2026 10:39 |
No Stream Warnings |
| Shiplake Lock to Marsh Lock 21st March 2026 10:39 |
No Stream Warnings |
| Marsh Lock to Hambleden Lock 22nd March 2026 10:04 |
No Stream Warnings |
| Reach | Current Conditions |
|---|---|
| Hambleden Lock to Hurley Lock 22nd March 2026 10:04 |
No Stream Warnings |
| Hurley Lock to Temple Lock 22nd March 2026 10:04 |
No Stream Warnings |
| Temple Lock to Marlow Lock 22nd March 2026 10:04 |
No Stream Warnings |
| Marlow Lock to Cookham Lock 22nd March 2026 10:04 |
No Stream Warnings |
| Cookham Lock to Boulters Lock 22nd March 2026 10:04 |
No Stream Warnings |
| Boulters Lock to Bray Lock 22nd March 2026 10:04 |
No Stream Warnings |
| Bray Lock to Boveney Lock 22nd March 2026 10:04 |
No Stream Warnings |
| Boveney Lock to Romney Lock 20th March 2026 13:22 |
No Stream Warnings |
| Romney Lock to Old Windsor Lock 20th March 2026 13:22 |
No Stream Warnings |
| Old Windsor Lock to Bell Weir Lock 20th March 2026 13:22 |
No Stream Warnings |
| Bell Weir Lock to Penton Hook Lock 25th March 2026 10:29 |
No Stream Warnings |
| Penton Hook Lock to Chertsey Lock 25th March 2026 10:29 |
No Stream Warnings |
| Chertsey Lock to Shepperton Lock 25th March 2026 10:29 |
No Stream Warnings |
| Shepperton Lock to Sunbury Lock 28th March 2026 10:14 |
No Stream Warnings |
| Sunbury Lock to Molesey Lock 21st March 2026 10:39 |
No Stream Warnings |
| Molesey Lock to Teddington Lock 20th March 2026 13:22 |
No Stream Warnings |
This website uses information from the 'River Thames: current river conditions' UK Environment Agency Government website. Contains public sector information licensed under the Open Government Licence v3.0.
Benson Lock to Cleeve Lock
No Stream Warnings
The average condition is:
No Stream Warnings
No Stream Warnings
Enjoy the River Thames safely.
Caution Stream Decreasing
The Environment Agency advise users of all unpowered boats not to navigate and users of powered boats to navigate with caution.
Caution Stream Increasing
The Environment Agency advise users of all unpowered boats not to navigate and users of powered boats to find a safe mooring. This is because river flows are likely to strengthen, and Strong Stream warnings (red boards) could be displayed without further warning.
Caution Strong Stream
The Environment Agency advise users of all unpowered boats not to navigate and users of powered boats to find a safe mooring. This is because river flows are likely to strengthen, and Strong Stream warnings (red boards) could be displayed without further warning.
Caution Strong Stream
The Environment Agency advise users of all boats not to navigate because the strong flows make it difficult and dangerous.