Engineers from the Canal and Rivers Trust are investigating the cause of a canal breach on the Middlewich Branch of the Shropshire Union Canal.
The sudden collapse at the end of last week has drained the canal over a 1km section and is reported to have stranded up to 20 boats.
Built in 1827, the 16km long Middlewich branch connects the Trent and Mersey Canal to the Shropshire Union Canal.
In a statement, the trust said: “Our emergency engineers were on site dealing with the breach, and the canal is currently drained between Stanthorne Lock and Wardle Lock, on the south side of Middlewich town centre. The towpath has also been closed along this stretch.
“We believe only one householder may be affected, with minor damage to their garden.”
The trust said that its engineering team is working to try and understand the cause of the breach and will be making an initial assessment regarding how to progress repairs, likely timescales and costs.