I received a complaint! 
that there was a gap in this section of caches. This area floods badly and I was worried any cache would not survive!
However, after some searching, I have found a watertight container to fill the gap. 
This is placed on the Severn Way footpath, a 224 mile (360km) footpath from the source of the river to the Estuary.
This section WILL flood, please check flood warnings, and if you see the river is in flood on aproach, leave it for another day!
Flood warnings!