Mae'n bwysig bod rhannau o'r afon Dyfrdwy a'r afon Gwy sydd yng Nghymru yn cael eu cynnwys o fewn yr un cyfyngiadau â'r afonydd sy'n cael eu cynnwys o fewn Is-ddeddfau Cymru Gyfan. Felly, rwyf yn cymeradwyo yr Is-ddeddfau Trawsffiniol yn swyddogol, drwy lofnodi eu Offerynnau Cadarnhau ar 29 Ionawr. Daw yr Is-ddeddfau i rym ar 31 Ionawr 2020.
It is important the Welsh parts of the Dee and Wye rivers are covered by the same restrictions as the rivers covered by the All Wales Byelaws. Therefore, I officially gave my approval to the Cross Border Byelaws, by signing their Confirmation Instruments on 29 January. The Byelaws will come into force on 31 January 2020.