Lock 46 Cowroast & Water levels, Northchurch to Berkhamsted, Grand Union Canal


From Date: 25/11/2019 00:00

To Date: 20/08/2020 00:00 inclusive

Type: Navigation Restriction

Reason: Water resources

Is the towpath closed? No


Closest waterway: Grand Union Canal

Starts at: Lock 49, Northchurch Lock

Ends at: Lock 55, Rising Sun


20/08/2020 09:43

Please be advised that the navigation is no longer restricted.

27/11/2019 12:03

Due to pump failure and low water level issues on the Grand Union Canal at Berkhamsted, Lock 46 Cowroast will be closed every day from 15:00pm starting from Thursday 28 November.

Passage through Lock 46 will be restricted between 0830 hours to 1500 hours only until the issue is resolved.


Due to a pump failure, we are currently experiencing low water levels between Northchurch and Berkhamsted.

Navigation will remain open and staff will be managing the water levels between the pounds on a daily basis, please help us by ensuring that all locks are closed after use with North Church Lock 49 and Lock 53 left empty.

Updates regarding the pump repair will be communicated once we have further information.