Newport 21
This drawings depicts the winding course of the River Usk as it flows by the Roman town of Caerleon into the Severn Estuary and the Bristol Channel. Not far from the river mouth lies Newport. The Usk is not navigable except at this point, but the Monmouthshire and Brecon and Abergavenny canals, in part following the valley, carry a small trade up to Brecon. Cardiff, depicted at bottom left, was a town of only 6,000 inhabitants when this plan was produced.
The British Library1811