and floodwaters entered the low-lying areas of Colliery Street and Great Street causing flooding to many properties. A major river improvement scheme was completed in 1985 and no problems have occurred since then. February 2020 also saw seriously flooding. References External links Pictures of events in Trehafod Trehafod Welsh Coal Mines website - research the local pit history Images, within 10km of Trehafod, Rhondda,Cynon,Taff Rhondda Valley Villages in Rhondda Cynon Taf Communities in Rhondda Cynon Taf