The Rhine–Herne Canal (German: Rhein-Herne-Kanal) is a 45.6-kilometre (28.3 mi) long transportation canal in the Ruhr area of North Rhine-Westphalia, Germany, with five canal locks. The canal was built over a period of eight years (5 April 1906 - 14 July 1914) and connects the harbour in Duisburg on the Rhine (51°26′59″N6°46′1″E) with the Dortmund-Ems Canal near Henrichenburg (51°37′1″N7°19′19″E) following the valley of the Emscher. It was widened in the 1980s.