herculis

[Horatio]

Welsh river that joins the Severn at Newport

[Kay]

Maybe the River Taff? Or the river Wye?

[JoolsTwo]

Usk

[Bordeaux]

This was a crossword clue you would do better to give the crossword and and how many letters from what you have put its 31d Telegraph Herculis am I right ? the answer was USK river.

[Horatio]

Thanks Jools, USK fits in fine

Horatio

[Horatio]

Thanks you too Bordeaux for the correct answer