An aerial survey of the south west, taking place over the next few months, could help predict future flooding and landslides.
Planes will be flying as low as 80 metres over open countryside, and higher over built-up areas.
The project has begun at the western tip of Cornwall and will reach Exeter some time next month.
Devon care home fined £200,000 after two residents drowned
Burdon Grange failed to provide safe care
Residents urged to help rough sleepers
Volunteers can join the soup run
City beat Argyle in Devon derby
Match Report: Exeter City 2-1 Plymouth Argyle
Parking in Devon could rise by up to 50 per cent
It should raise £4 million
Devon crime writer inspires new Mr Men books
Agatha Christie did like a twist!
