Parts of Pontypridd suffered severe flooding overnight as the River Taff burst its banks.
A severe flood warning, the worst of its kind, was issued by Natural Resources Wales for the River Taff at Pontypridd.
Photos show the main shopping street in the town centre has been hit by the floods, with cars, homes and shop fronts underwater.
The streets alongside the river have also been severely affected by the rising water levels.
The water in Pontypridd town centre has mostly subsided but wider areas in Pontypridd continue to be devastated by the high water levels.
Water levels of the River Taff rose throughout the day on Saturday, and Natural Resources Wales issued a warning at 9.20pm that the river levels were very high and could lead to severe flooding.
Much of the rainwater has dispersed from the town centre and the clean up operation has begun.
On Sunday morning, the NRW said: "Two severe flood warnings have now been issued for the River Taff at Pontypridd and the River Neath at Aberdulais. The number of flood warnings has risen to 76, alongside 61 flood alerts."
Other areas of RCT have also been hit, and the council are urging residents to only make contact in an "absolute emergency."
Rhondda Cynon Taf council issued this statement on Sunday morning: "The council is asking residents to only get in contact this morning unless it is an absolute emergency.
"We are currently receiving an extremely large volume of calls due to flooding at numerous locations in the county borough."
This is what the flooding looked like in the early hours of Sunday morning:
The flooding occurred in the early hours of this morning, before a red weather warning for heavy rain was issued for a large part of south Wales for Sunday morning.
The rare red "danger to life" status is in place from 6.10am until 11am on Sunday morning.
The warning covers a large area of the valleys from Neath to Ebbw Vale:
Other areas of Rhondda Cynon Taf have been hit by the flooding, and council leader Andrew Morgan said last night: "Significant flooding already in many parts of RCT, so a huge thanks to all the council staff working around the clock tonight to respond to calls."
The council has opened four res centres at Sobell Leisure Centre, Aberdare, Hawthorn Leisure Centre, Llantrisatn Leisure Centre and Rhondda Sports Centre for those affected by the floods.
The road over Sardis Road in Pontypridd was turned into a waterfall mid-morning:
Motorists became stranded as a result of the overflown water flooding the road below.
Residents living in Sion Street in Pontypridd were among the worst affected by the floods as the street looks directly onto the River Taff.
Residents in the street were seen trying to drain as much water as possible away from their homes.
A fundraising page has been set up to help those in Pontypridd affected by the flood. Click here if you would like to donate.
