According to Wickipedia, the River Usk rises on the northern slopes of the Black Mountain of South Wales, in the easternmost part of the Brecon Beacons.
Initially it flows north into Usk Reservoir, then east by Sennybridge, then onto Brecon, before turning southeast to flow by Talybont-on-Usk, Crickhowell and Abergavenny, after
which it takes a more southerly course, finally into the Severn Estuary.
This makes it a local river for me, and a fantastic paddle too! Taking advantage of the rain this week, we had a good couple of days out on it.
much a 'tale of two halves': Big, open water on day one, with a technical and rockier descent on day two.
Oh what a lovely office I have...