Clean-up begins in the wake of flash flooding and heavy rain in parts of B.C.

WATCH: BC’s southern interior begins to recover from Wednesday’s massive storm. Jeremy Humkar has more on the damage and clean-up.

People around the province are mopping up and assessing the damage after an intense system of torrential rain and wind moved across many parts of B.C. Wednesday afternoon.

In Kamloops, streets turned to rivers as the city was hit with up to 30 millimeters of rain in only a matter of minutes.

Basements were flooded in dozens of homes and businesses with several small mudslides around the region.

The city’s drainage system was also overwhelmed by the flash flooding, washing debris onto the street.

CFJC reporter Tara Gostelow says a massive sinkhole has opened up and grown overnight near a property in downtown Kamloops with a creek running nearby.

The homeowners, who have lived on the property for 41 years and have never seen anything like it, are hoping city engineers will examine the sinkhole later today.

A massive sinkhole on a property in Kamloops.

Jeremy Hunka, Global News

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The wind downed trees in neighbourhoods throughout the region.

One of the worst hit areas was Sicamous.

This morning virtually the entire town is still without power.

BC Hydro expects it to be restored by noon today.

The storm ripped through Cranbrook just as darkness fell last night, bringing blasts of wind and torrential rain.

There are no reports of flash flooding having occurred, but some power lines were brought down by fallen tree branches.

At the peak of the storm, power was out for nearly 20,000 BC Hydro customers around the Okanagan.

The storm also left behind a muddy mess at a West Kelowna mobile home park, where a massive cleanup is underway this morning.

A torrent of mud came washing down the streets at Kelowna West Estates  mobile home park at the height of last night’s storm.

A thick, wet layer of mud was left behind by the flash flood, which came from an under-construction subdivision.