The Lopau is a river in the Lüneburg Heath

Lüneburg Heath

The Lüneburg Heath is a large area of heath, geest and woodland in northeastern part of the state of Lower Saxony in northern Germany. It forms part of the hinterland for the cities of Hamburg, Hanover, and Bremen and is named after the town of Lüneburg. Most of the area is a nature reserve...

 in North Germany

Germany

Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...

. It is a right tributary of the Luhe.

Course

The Lopau rises with two headstreams from the ponds known as the Süderteichen and the Westerteichen in the Westergrund in the Munster North Training Area, near the abandoned village of Lopau, that lies within the borough of Munster. In its upper reaches the Lopau flows through uncultivated grassland, which is becoming increasingly afforested by alders and invaded by the wooded area of the Raubkammer. In Bockum, a village in the municipality of Rehlingen

Rehlingen

Rehlingen is a municipality in the district of Lüneburg, in Lower Saxony, Germany....

 in Lüneburg District, it picks up the Ehlbeck

Ehlbeck (Lopau)

Ehlbeck is a river of Lower Saxony, Germany....

, a left-hand tributary. East of Amelinghausen

Amelinghausen

Amelinghausen is a municipality in the district of Lüneburg in Lower Saxony, Germany. It is also the seat of the collective municipality of Amelinghausen.- Geography :The municipality lies in the middle of the Lüneburg Heath Nature Park...

 the river is impounded by a dam by the B 209 federal road

Bundesstraße 209

Bundesstraße 209 is a German federal road that runs from Nienburg/Weser district in Lower Saxony to Schwarzenbek in the district of Herzogtum Lauenburg, Schleswig-Holstein.- Route :...

 to create the tourist lake of Lopausee

Lopausee

The Lopausee is a man-made lake east of the village of Amelinghausen in the Lüneburg Heath in North Germany. The lake, which has an area of about 12 hectares, has been created by impounding the River Lopau with a dam. The dam lies parallel to the road embankent of the B209 federal road that runs...

. North of Amelinghausen

Amelinghausen

Amelinghausen is a municipality in the district of Lüneburg in Lower Saxony, Germany. It is also the seat of the collective municipality of Amelinghausen.- Geography :The municipality lies in the middle of the Lüneburg Heath Nature Park...

 the Lopau discharges into the Luhe near the gravesite of Oldendorfer Totenstatt

Oldendorfer Totenstatt

The Oldendorfer Totenstatt is a group of six burial mounds and megalith sites in Oldendorf north of Amelinghausen in the valley of the River Luhe in Lüneburg district in the German state of Lower Saxony...

 by Oldendorf (Luhe)

Oldendorf (Luhe)

Oldendorf is a municipality in the district of Lüneburg, in Lower Saxony, Germany.Nearby is an important neolithic gravesite, the Oldendorfer Totenstatt which has been well-preserved....

. From source to mouth the river is 12.7 km.