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Temporary Navigation Closure - Lock 23, Stoke Hammond Lock to Lock 26, Three Locks

Type: Navigation Closure

Waterway(s): Grand Union Canal

From: 21 September 2026, 9am

To: 22 September 2026, 9am inclusive

Region: London and South East

Reason: Low Water Levels

Location

Closest waterwayGrand Union Canal
Starts atLock 23, Stoke Hammond Lock
Ends atLock 26, Three Locks top
Upstream winding holeWinding Hole, south of Bridge 77
Downstream winding holeWinding Hole, Soulbury

Description

Original 18 September 2026, 4:39pm

Please be aware that we will be putting in place a temporary navigation closure due to low water levels, between Lock 23, Stoke Hammond Lock and Lock 26, Three Locks, from 9:00am on Monday 21st September until 9:00am on Tuesday 22nd September.

  This issue has arisen suddenly, and the significant volume of boat traffic currently moving through this section is impacting our ability to recover and stabilise water levels.

  We are therefore introducing this short closure to provide an opportunity for water levels to recover. During the closure, we will also be ashing up the lock gates to help reduce water loss and improve retention.

  We hope that these measures, together with the temporary reduction in boat movements, will allow water levels to recover sufficiently for us to reopen the navigation as planned on Tuesday morning.

  We appreciate your understanding and patience while we manage this developing situation and work to protect the navigation during the current period of reduced water availability.

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