River Usk
From Tardis Wiki, the free Doctor Who reference
The River Usk was a river in the south-east of Wales.
Following part of the river from north-west to south-east, it ran alongside the A40, past Crickhowell on its north bank , the flowed under the A465 and past Abergavenny on its east bank. It then continued south-east, past Usk.
The River Usk appeared on Mary Cooper's map of overflow camps in and around Wales. (TV: The Categories of Life)