The Department of Environment, Food and Agriculture is pleading with people not to go into closed glens.
On Facebook, DEFA says Molly Quirk's Glen in Groudle and lower Silverdale Glen in Ballasalla are both closed after recent storms which left significant damage.
The department says people are ignoring the signs and still going into fenced-off areas, which have fallen trees, land slips and dangerous paths.
It hopes to it can reopen both glens in the coming weeks.
Postal vote applications have to be in soon
Mum launches petition over university support
Bus services north and south face disruption later
Wildlife Trust unveils woodland plans
Deadline looms for by-election nominations
Biker in UK hospital after Mountain crash
Trial event closes roads in Peel and Ramsey
Requisition meeting for Garff voters