Bute Street, Cardiff Bute Street, Cardiff Bute Street () is a street in Cardiff, Wales. It links Cardiff Bay (previously Tiger Bay) and Butetown with Cardiff city centre. It now has no road number. It runs from the dockside of the Mermaid Quay complex in the south, which is now a pedestrian zone, to the junction of Bute Terrace (A4160) in the north. What is today Bute Street was previously mostly meadow and marshland called Soudrey, the Cardiff south moors. The 2nd Marquess of Bute realised in the 1820s that the Glamorganshire Canal was not sufficient to cope with the demands of the
Cardiff Bay Barrage 85% to 78% as a result of lower levels of winter survival. The freshwater lake had problems with blue-green algae initially which made it impossible to swim in the water or participate in water sports. These issues have now largely been resolved though some toxic algae remain in some of the dock areas in the bay. Cardiff Bay has become the first area of freshwater in Wales to be infested with zebra mussels – an alien species to the UK which multiplies rapidly to the detriment of native marine life. The Cardiff Harbour Authority has decreed that "Personal watercraft" used