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.
Dartmoor visitor centre gets one last reprieve
But it will close in October unless cash can be found
Cornwall is key to Torbay's role in Devon devolution
'The two counties are natural partners'
Devon and Cornwall should combine under mayor, says Exeter MP
Steve Race supports city's unitary bid too
Plymouth supports South West Peninsula authority
Counties will get more working together, its claimed
Devon votes in favour of postponing May’s elections
Claims of democracy ‘denied’
Man jailed for life after stabbing strangers in Exeter
He boasted he had “livened up Exeter a bit”
