Lock 24 - Restored Bywash

Uncovered in 2014, this bywash has been restored as a typical example  of a common canal feature although it may not be needed for the final canal route. 

A bywash forms an overflow by diverting surplus water over a weir instead of allowing  it to flow over the lock gates. It then flows via a small tunnel into the lower lock.

See also the unusual circular bywash by Lock 25

 In October 2014 Mike Battisson wrote: "Since first walking the Tamworth Road section of the Heritage Towpath Trail I have been intrigued by the Lock 24 bywash entry feature with the extant 'tunnel' to the lower level, hiding demurely behind its 4 foot screen of nettles.As I understand it, this was blocked by the 'authorities' many years ago to prevent any attempts by the foolhardy to try to crawl through it, or local dogs to become trapped.Having braved the prickly barrier I started to remove the centuries of mud, weeds and detritus to reveal a beautifully blue-nosed capped perimeter wall, still with 80% in reasonable condition; readily restorable as a feature of interest, even if possibly becoming redundant.However, as I penetrated deeper to expose the base I was puzzled by what I found. In contrast with the precise laying of the wall bricks, each brick in the base was 1/4 to 1/2 centimetre higher or lower than it's neighbour. I wonder If this was to provide a 200 year old equivalent to a non-slip surface to prevent accidental slips when being cleaned out.Entry to the tunnel is prevented by a blockage of tarmac-like material. Removal of the blockage will necessitate the fabrication of a security grill to deter interference." 

Barry & Rick 11th November 2015

Lock 24 Bywash after initial uncovering in 2014.

Mike Battisson investigating the outlet tunnel.

Bywash outlet below Lock 24.