IN THE east of the county, Millbrook, near Torpoint, was one of the areas worst affected.
Firefighters went door to door asking residents to leave their homes as the rain poured down on Saturday night.
Resident Marilyn Pearce, 54, said: "It flooded all of our hallway downstairs. We haven't got any power because we had to turn the electric off. It was just pandemonium. It's very scary stuff."
In Polperro the main street was engulfed by a surge of floodwater on Saturday night but flood defences installed in 2010 held strong.
Villager Carl Aspinwall, 42, said: "The flood system has worked brilliantly but the stream was high because water kept running in from the cliffs around the village."
In Mevagissey, firefighters were scrambled and police roadblocks put in place. Water reportedly entered about 35 homes and businesses in the town.
Some residents had to be evacuated to the local school after one to two feet of water swept through the fishing port on Saturday night. Paul Pearce, from Mevagissey's retained fire station, said: "Although it wasn't of the magnitude of 2010 it was still a significant flood."
Five properties had to be evacuated following a landslip at East Portholland, near Mevagissey.
Villages surrounding the town were also affected, including Polmassick, where some residents had to flee to the homes of nearby neighbours, and Gorran Haven.
Roads around St Austell, Par and the Clay Country also became virtually impassable.
Cornish Market World traders took measures to stop a repetition of the damage it suffered in 2010.
In Lostwithiel there were fears the river would burst its banks as it did two years ago, but only a small number of properties were affected by the rising water.
Emergency response officers with Newquay police were also kept busy over the weekend as flooding caused major routes around the resort to become impassable.
Worst hit was the A3058 between Quintrell Downs and Summercourt, where a number of motorists became stranded.
Newquay police inspector Dave Meredith said the problem was made worse by many drivers ignoring 'Road Closed' signs and attempting to drive through flooded areas.