Flooding in Liverpool has affected roads in places such as Seaforth.
Areas of Bootle were forced to be closed due to the torrential downpours and parts of Crosby were also put into a predicament.
Motorists living in Wirral were advised to avoid the Rake in Bromborough, while there were weather problems in the West Derby area.
A representative from the county council informed the Daily Post that there were major roads cut off for access, the Crosby Herald reports.
These included Queens Drive at Childwall Fiveways, Allerton Road and Aigburth Road.
He added: "When there is such heavy rain, the drainage system just cannot cope. We have been working flat out to try to alleviate the situation."
This is in contrast to earlier this month when the Met Office noted that the first six months of the year had been some of the driest for 100 years, with June ending with a below average rainfall figure.
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