Cardiff Bay Barrage

Cardiff Bay Barrage
Bascule Bridges
Bascule Bridges
Official nameCardiff Bay Barrage
CountryUnited Kingdom
LocationCardiff, Wales
Coordinates51°26′53″N 3°09′53″W / 51.44812°N 3.1647°W / 51.44812; -3.1647
StatusOperational
Construction began1994 (1994)
Opening date2001 (2001)
Construction cost£120m
Owner(s)Welsh Government
Operator(s)Cardiff Harbour Authority
Dam and spillways
Type of damBarrage
ImpoundsCardiff Bay
Height7.96 m (26.1 ft)
Length1.1 km (0.68 mi)
Spillways5
Spillway typeControlled
Spillway capacity2,250 m3/s (79,000 cu ft/s)
Reservoir
CreatesCardiff Bay
Surface area200 hectares (490 acres)
Normal elevation4.5 m (15 ft) OD

Cardiff Bay Barrage (Welsh: Morglawdd Bae Caerdydd) lies across the mouth of Cardiff Bay, Wales between Queen Alexandra Dock and Penarth Head. It was one of the largest civil engineering projects in Europe during construction in the 1990s.