The Chesterfield Canal hit international headlines in 1978. While dredging the bottom of the canal to remove rubbish a maintenance team pulled up a large chain which had a wooden plug attached to it. Later that day it was noticed that a whirlpool had formed and it became evident that the section of the canal between Whitsunday Pie Lock and Retford Town Lock was losing water. Unbeknown to the workmen, but commonly known locally, the plug was an original engineering feature of the canal to allow sections to be drained for future maintenance. The water drained (as designed) harmlessly into the nearby river Idle. The accidental removal of the plug became a national and international story, and was even recorded in Lloyd's List.