Wasserübergabe Hamm, Hydraulic engineering structure at Datteln-Hamm Canal, Germany

Wasserübergabe Hamm is a water-engineering complex at the Hamm lock of the Datteln-Hamm Canal, where the Lippe and the canal run parallel, separated by a dike that also serves as a flood embankment. Its 1914 structures include a roller weir that holds the Lippe slightly above the canal's upper water level, a listed Historicist hydropower station with three turbines (two for the Lippe, one for the canal's free fall), and a feeding structure about 1.5 km upstream at the Fährstraße bridge. Two more structures followed in the 1970s: a transfer structure below the lock and a pumping station between the lock and the free fall.

The structure began operations in 1914 when the Datteln-Hamm Canal opened and replaced an earlier pumping station at the Alte Fahrt bridge. It was part of major canal projects that equipped western Germany with a modern water transport network.

The name Wasserübergabe refers to the transfer of water between the Lippe and the canal. The 1914 hydropower station, a listed Historismus building, had three turbines: two fed by the Lippe and one by the canal's Freiflut, with water split between river and canal according to each turbine's running time. It was shut down as uneconomical in 1971, and since 2006 a private investor has run one 475 kW turbine there, enough for nearly 800 households.

The weir, the historic hydropower plant and the feeding structure at Brücke Fährstraße, about 1.5 km upstream of the lock, are separate buildings along the canal; the transfer structure lies below the lock. The canal side dam doubles as a flood embankment, so paths can be closed when the Lippe runs high.

The 1914 hydropower station at Hamm had three turbines: two drew on the Lippe and a third on the canal's free fall, and water was divided between river and canal by adjusting each turbine's running time. The historicist building is a protected monument; after closure in 1971, a private investor reinstalled a 475 kW turbine in 2006, enough for roughly 800 households.