Staustufe St. Aldegund - Neef, River barrage and hydropower complex at Moselle River, Rhineland-Palatinate, Germany.

The Staustufe St. Aldegund-Neef is a barrage and lock system on the Moselle River in Rhineland-Palatinate. It has two lock chambers that allow commercial and passenger vessels to pass while managing water levels for navigation.

The barrage was built in 1963 during the canalisation of the Moselle (Moselkanalisierung), which made the river navigable for larger vessels; it lies at Moselle kilometre 78.37 and holds a 24.64 km stretch of water. The Neef run-of-river power station, operated by RWE Generation Hydro, followed in 1966 with an output of 16.4 megawatts. On 2 July 2025 a passenger vessel struck the lock gate, damaging it so badly that locking had to be suspended.

This structure connects the communities of St. Aldegund and Neef and sits within the wine-growing Moselle valley. Visitors can observe how the engineering blends with the landscape and serves the region's needs.

The site is accessible from surrounding roads, with the best views from walking or cycling routes along the riverbank. Visit during daylight hours to observe the lock operations and see vessels passing through.

On 2 July 2025 a passenger vessel struck the lock gate, damaging it so badly that lock operations had to be suspended. The incident came about half a year after a similar accident at the Müden barrage upstream.