Efforts to protect a section of coastline near Sidmouth have been hampered by recent stormy weather.
Cliffs at Pennington Point were to be shored up with shingle dredged from the River Sid.
But the shingle, left on the beach prior to being moved, has been washed away by high tides and bad weather.
More top news
Your latest West Country weather forecast with Bob Crampton.
A coroner has ruled a "series of failures" contributed to the death of a newborn.
Cornish charity ShelterBox has flown volunteers to the Turkey-Syria border to help deal with growing number of refugees there.