Services on the main Paddington rail line have been halted by flooding near Exeter.
It's believed the problem is at Cowley Bridge and the water is above the rails.
Great Western and Cross Country services have been halted in both directions.
A spokesman says it's frustrating for customers, but they're in the hands of Network rail, who are inspecting the track.
Pothole reports in Plymouth triple
The weather has played havoc
Electric cars add to hazards in busy Paignton street
'Only dogs can hear them'
Armada Way revamp will be shining light at end of tunnel
Opinion: From building site to regeneration catalyst
Devon pothole numbers skyrocket
Roads left battered and bruised
Calls for Torbay to rethink 'Blue Flag' exit
Questions over new home-grown awards structure
Parking charges to increase in Cornwall Council car parks
Some will remain free
