Cymunedau yng Nghymru gafodd eu taro galetaf gan y stormydd ym mis Chwefror ac mae gwaddol y tomenni glo yn golygu cost anghymesur i Gymru sy’n bodoli ers cyn datganoli. Nid yw’r ffactor ar sail anghenion yn fformiwla Barnett yn addas ar gyfer y costau hyn, gan nad oedd y fformiwla i fod i ddelio â’r mater gwaddol sylweddol hwn.
Communities in Wales were hardest hit by the February storms and the legacy of the coal tips means a disproportionate cost for Wales which predates devolution. These costs are not met by the needs-based factor in the Barnett formula, which was not designed to deal with this significant legacy issue.