Yes, the width trench created by overflowing water is only about 30 feet, the embankment either side is still there, nothing like Dutton, although part of towpath has been washed away, once that trench is blocked and the canal filled in it could hold the water. The pressure on the sides is very small particularly as the canal is so shallow at the edges, the main force/pressure is down through the bed of the canal. if necessary a dam could be put around it. It only washed away that section because it overflowed at it was lower there due to access for staff to inspect the aqueduct. I do wonder whether the overflow channel/culvert further along was last inspected.