An accident affected the A390 at East Taphouse, with diversion routes reportedly blocked.
A spokesman said: ‘Cornwall Fire and Rescue Service had a busy night attending multiple flooding incidents throughout the county.’
There are reports of standing water across Cornwall, with drivers urged to take care on the roads
Rain is forecast to ease this afternoon, and this evening’s Man Engine appearance at the Royal Cornwall Showground, Wadebridge, is due to go ahead. The event was moved there from Lostwithiel because of waterlogged ground.