On Sunday evening several thousand sandbags were distributed to key flood risk areas across the Rhondda Cynon Taf, while dozens of crews and heavy machinery were put on standby.
Council leader Andrew Morgan said pumps were deployed with additional inspectors and drainage engineers on site.
The local authority’s emergency control room was also fully staffed, he added, with CCTV cameras monitoring the culverts being closely watched.
The council also advised residents to move their cars from high-risk areas and offered free parking spaces to those in need.
A council spokesperson said that more than 105mm (4in) of rain had fallen in a relatively short time on Sunday.
They added “no river flooding to properties appears to have occurred – although a number of locations where we had teams deployed were very close to flooding” and checks would continue over the next few days.
The council is continuing to provide grant funding to businesses to enable them to “be as flood resilient as possible” and sad it was pleased to see previous recipients, such as Clwb y Bont in Pontypridd, were protected over the weekend.
Mick Antoniw, MS for Pontypridd, said in an update at about 21:00 GMT on Sunday that cars had been removed from Sion Street and Berw Road in the town with floodgates in place at Clwb Y Bont.
He added the River Taff was “very high” but the streets had not flooded.
Resident James Wilcox was out walking his dog when he captured footage of the River Taff in Pontypridd.
He said it initially looked like police were blocking the road off and were knocking on doors.
“A friend lives on the street, and they’ve since placed sandbags, so I assume the police were ensuring everyone was informed and safe,” Mr Wilcox added.