Cafwyd llifogydd hefyd ar reilffordd Calon Cymru, rheilffordd Cambrian yn Black Bridge a’r brif reilffordd i’r de a’r gogledd ar y Gororau rhwng Y Fenni a Henffordd.  Gwelwyd tarfu hefyd ar reilffordd Glyn Ebwy rhwng Llanhilleth a thref Glyn Ebwy.  Aeth gwirfoddolwyr o bob rhan o Trafnidiaeth Cymru i nifer o’r gorsafoedd yr effeithiwyd arnynt i helpu i gydlynnu’r trefniadau teithio newydd.  Roedd gan Network Rail dimau hefyd ar draws y rheilffyrdd, yn gweithio drwy’r nos i archwilio a thrwsio’r seilwaith i sicrhau bod y traciau yn ddiogel i’w hail-agor wrth i’r dŵr ddechrau gostegu.
Flooding also hit the Heart of Wales line, the Cambrian line at Black Bridge and the main north South route on the Marches line between Abergavenny and Hereford. It also impacted the Ebbw Vale line between Llanhilleth and Ebbw Vale Town. Volunteers from across TfW headed to many of our affected stations to pitch in and help coordinate the replacement travel operation. Network Rail also had teams out across the route, working round the clock to inspect and repair infrastructure and ensure routes were safe to reopen as the water began to recede.