River Usk River Usk The River Usk (; ) rises on the northern slopes of the Black Mountain ("y Mynydd Du"), Wales, in the westernmost part of the Brecon Beacons National Park. Initially forming the boundary between Carmarthenshire and Powys, it flows north into Usk Reservoir, then east by Sennybridge to Brecon before turning southeast to flow by Talybont-on-Usk, Crickhowell and Abergavenny after which it takes a more southerly course. Beyond the eponymous town of Usk it passes the Roman legionary fortress of Caerleon to flow through the heart of the city of Newport and into the Severn estuary at Uskmouth beyond
Wolf River (Fox River tributary) Next the Wolf River flows through Shawano County, where it collects the Red River, passes by the city of Shawano, then flows through Waupaca and Outagamie counties and back into Waupaca County, where it collects the Embarrass River at the city of New London. The final stretch of the Wolf River collects the Little Wolf and the Waupaca rivers just below New London, then passes through Winnebago County, through Lake Poygan and the city of Winneconne to empty into Lake Butte des Morts on the Fox River. Environmentalists were concerned about preserving the river when the Crandon mine was proposed