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Guidance: River Thames: current river conditions

Environment Agency

January 15
09:06 2023

Before you take your boat out on the River Thames, you should find out the current river conditions and make sure you understand what they mean. You should also check if there are any closures or restrictions in your area.

Find out current river conditions: updated 15 January 2023

You can also talk to lock staff to get the latest river conditions and strong stream warnings.

Lechlade to Oxford

Reach Current conditions
Upstream of St Johns Lock Caution strong stream
St Johns Lock to Buscot Lock Caution strong stream
Buscot Lock to Grafton Lock Caution strong stream
Grafton Lock to Radcot Lock Caution strong stream
Radcot Lock to Rushey Lock Caution strong stream
Rushey Lock to Shifford Lock Caution strong stream
Shifford Lock to Northmoor Lock Caution strong stream
Northmoor Lock to Pinkhill Lock Caution strong stream
Pinkhill Lock to Eynsham Lock Caution strong stream
Eynsham Lock to Kings Lock Caution strong stream
Kings Lock to Godstow Lock Caution strong stream
Godstow Lock to Osney Lock Caution strong stream
Osney Lock to Iffley Lock Caution strong stream

Oxford to Henley

Reach Current conditions
Iffley Lock to Sandford Lock Caution strong stream
Sandford Lock to Abingdon Lock Caution strong stream
Abingdon Lock to Culham Lock Caution strong stream
Culham Lock to Clifton Lock Caution strong stream
Clifton Lock to Days Lock Caution strong stream
Days Lock to Benson Lock Caution strong stream
Benson Lock to Cleeve Lock Caution strong stream
Cleeve Lock to Goring Lock Caution strong stream
Goring Lock to Whitchurch Lock Caution strong stream
Whitchurch Lock to Mapledurham Lock Caution strong stream
Mapledurham Lock to Caversham Lock Caution strong stream
Upstream of Blakes Lock Caution strong stream
Caversham Lock to Sonning Lock Caution strong stream
Sonning Lock to Shiplake Lock Caution strong stream
Shiplake Lock to Marsh Lock Caution strong stream
Marsh Lock to Hambleden Lock Caution strong stream

Henley to Teddington

Reach Current conditions
Hambleden Lock to Hurley Lock Caution strong stream
Hurley Lock to Temple Lock Caution strong stream
Temple Lock to Marlow Lock Caution strong stream
Marlow Lock to Cookham Lock Caution strong stream
Cookham Lock to Boulters Lock Caution strong stream
Boulters Lock to Bray Lock Caution strong stream
Bray Lock to Boveney Lock Caution strong stream
Boveney Lock to Romney Lock Caution strong stream
Romney Lock to Old Windsor Lock Caution strong stream
Old Windsor Lock to Bell Weir Lock Caution strong stream
Bell Weir Lock to Penton Hook Lock Caution strong stream
Penton Hook Lock to Chertsey Lock Caution strong stream
Chertsey Lock to Shepperton Lock Caution strong stream
Shepperton Lock to Sunbury Lock Caution strong stream
Sunbury Lock to Molesey Lock Caution strong stream
Molesey Lock to Teddington Lock Caution strong stream

Call to hear current river conditions

Alternatively, to get the latest river information before you go boating:

  • call the Environment Agency Floodline on 0345 988 1188
  • select option 1 for river information for boaters
  • when prompted, enter one of the quick dial numbers for the area of the river you want to hear about

Floodline quick dial codes

Quick dial codes Area Description
415000 Upstream of St Johns Lock to Radcot Lock St Johns to Radcot locks, including Buscot and Grafton locks
415001 Rushey to Godstow Lock Rushey to Godstow locks, including Shifford, Northmoor, Pinkhill, Eynsham and Kings locks
415002 Osney to Iffley Lock Osney to Iffley locks only
415003 Sandford to Clifton Lock Sandford to Clifton locks, including Abingdon and Culham locks
415004 Days to Mapledurham Lock Days to Mapledurham locks, including Benson, Cleeve, Goring and Whitchurch locks
415005 Caversham to Shiplake Lock Caversham to Shiplake locks, including Sonning Lock
415006 Marsh to Boveney Lock Marsh to Boveney locks, including Hambleden, Hurley, Temple, Marlow, Cookham, Boulters and Bray locks
415007 Romney to Bell Weir Lock Romney to Bell Weir locks, including Old Windsor Lock
415008 Penton Hook to Chertsey Lock Penton Hook to Chertsey locks only
415009 Shepperton to Teddington Lock Shepperton to Teddington locks, including Sunbury and Molesey locks
415010 River Kennet upstream of Blakes Lock River Kennet for upstream of Blakes Lock and down to the confluence with the River Thames

Find out about call charges.

What the warnings mean

Any river activity poses a greater risk when there are strong currents, high river levels or cold weather conditions. River flows can increase even during the summer months. Never assume that sunny weather means the conditions are not hazardous.

The Environment Agency may display warning boards at locks to inform river users of the conditions. Read the explanations of what these mean for you. Do not take risks and never underestimate the power of the river.

Strong stream warning

A red sign with white text reading 'Caution: Strong stream'.

Strong stream warning board

When these red boards are displayed on lock gates, the Environment Agency advises users of all boats not to navigate. The strong flows make it difficult and dangerous.

People in hire boats arriving at a lock where these boards are displayed should stop immediately. Contact your hire boat operator to ask for instructions.

Stream increasing warning

A yellow sign with black text read
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