Most of the locks on the Grand Union Canal between Whilton Locks and lock 45 at Bulbourne , the junction with the Wendover Arm , were built with two such side ponds .
Most are currently disused .
Most of the locks on the Grand Union Canal between Whilton Locks and lock 45 at Bulbourne , the junction with the Wendover Arm , were built with two such side ponds , although they are currently disused .