Workers dredging a river in the Somerset Levels have turned up eight cars over the last week, all within 100 metres of each other.
Environment Agency staff working to help relieve flooding in the area noticed the cars, which could be up to 20 years old, in the drainage channel of the River Parrett.
It is so far unknown how the cars may have ended up on the riverbed, but officials stressed they would not have contributed to recent high water levels.
A £20m package to protect the Somerset Levels from flooding is a “big step forward”, the head of the county council has said.
John Osman welcomed the move from ministers, which he said was “bringing hope to our flood-hit communities”.
People affected by flooding that has devastated the Somerset Levels have criticised what they have called "flood tourists".
Posting in the Flooding on the Levels Action Group, Facebook user Helen Ridler said she was angered to see "flood tourists with their kids, cameras and dogs" in Burrowbridge.
"If you are not doing something useful please stay away," she wrote.
Helen Ridler's comments, posted at 1:30pm GMT today, have quickly garnered support. Christopher Hampshire added: "It was the same here at Muchelney last Sunday.
"Luckily most of them stayed on the Langport side but hindered access to the relief boats for locals.
"Lots giving it a good coat of looking at but didn't hear a single word offering help or any expressions of empathy or desire to find out what it was like for us."