Leda (river)

Mouth of Leda into the Ems

Template: Infobox River / Obsolete

The Leda (Ld ) is a right tributary of the Ems in Lower Saxony ( Germany ) and a federal waterway.

Of the 25 km of the river above the mouth, the lower 1.9 km sea lane, the upper 23 km inland road. For inland waterway are also 0.56 km from EMS promised meeting with the Dreyschloot to the confluence of the Elisabethfehnkanals. The shipping lane belongs to class Vb waterway, inland waterway not classified to Class II to Jümmemündung (km 15.95), the rest is. Responsible is the Waterways and Shipping Office Emden.


The Leda springs as Ohe northwest of the Emsland Spahnharrenstätte. Just south coast from channel or Sedelsberg of the Ohe combined with the Marka promised to Ems and is on East Frisian territory for Leda. The river flows near Leerort, a district of Leer, in the Ems in Lower Ems km - 14.23.

Directly north of the Ledamündung was formerly the fortress Leerort, of which only scanty remnants are seen outside the dykes today. South of the mouth, in Overledingerland ( Overledingen = " land beyond the Leda " ), the village monastery Muhde ( " Muhde " from Old Frisian " mutha " = mouth ) is.


The port of Leer is a connection over a sea lock at the size of 192 mx 26 m. The harbor was once a turn of the river, which was separated by a puncture. The Leda and its tributary Jümme dewater a 35,000 -acre lowland area in East Frisia. Already around 15 km above the mouth of the Jümme is the Leda (or promised Ems) connected to the Jümme (or the Barßeler depth ) over the Dreyschloot 1848-1852 artificially created.

Ledasperrwerk and pumping station

The Leda has no locks, only a barrage with a boat passage. The Ledasperrwerk was taken in July 1954 in operation in the years 1950 to 1954 for the protection against storm surges and built. It has five each 14 m wide openings that can be closed with 10.5 m high vertical lift gates. The mean opening serves as ship transit. Back in December of the same year, the locking mechanism tested at a high storm surge.

In the years 2000 to 2001, the Leda - pumping station was constructed area to improve flood and storm surge safety Leda Jümme immediately adjacent to the Ledasperrwerk. Although the in case of storm surges closed Ledasperrwerk prevents penetration of water from the seaward side in the Leda - Jümme area, at the same time, however, it impounds runoff from inland. With the help of the new pumping station, it is possible every day to pump up to 3.5 million cubic meters Ledawasser in the Ems and prevent that even with longer closing times of the barrier with a flood of Leda Jümme - area by dammed inland water enters.

Another function is the pumping station to meet in connection with ship tours of the Meyer shipyard in Papenburg Ems estuary: With closed Emssperrwerk at Gandersum can be stautes tidal water as needed up to 5.7 million cubic meters from the Leda - Jümme area in addition to the Ems be pumped to achieve the required water level in the river Ems from 1.75 meters to 2.5 meters above mean sea level as quickly as possible. The aim is to minimize the interference with the natural processes.