The Ouseburn Barrage, Ouseburn, Newcastle.
The river was previously tidal from the Viaduct, revealing dark mud at low tide. However, since 2009 a tidal barrage at the river mouth retains high water in the Ouseburn at low tide, with the objective of providing a more pleasant environment alongside its banks at low tide, thus promoting development. Despite the expense of its construction, the Ouseburn barrage has had operational problems and was left open for a length of time while they were corrected.