Wagbachniederung, Protected area in Oberhausen-Rheinhausen, Germany.

The Wagbachniederung is a protected wetland reserve located between the municipalities of Oberhausen-Rheinhausen and Neulußheim in the Rhine Valley of Baden-Württemberg. It consists of reed beds, shallow pools, and open water areas that together form a layered habitat for birds and other wildlife.

The ponds were built as settling basins for the Waghäusel sugar factory, which operated until 1995. The area was designated a nature reserve by decree on 8 July 1983, under protection number 2.064, while the factory was still running. After the factory closed, the basins and surrounding land developed into the reed beds and mudflats that now form the reserve.

The Wagbachniederung draws birdwatchers from across the region, especially during spring and autumn migrations. The two observation huts have become informal gathering spots where visitors share sightings and tips with each other.

Two observation huts along the road offer sheltered spots to watch the reserve without disturbing wildlife, and binoculars make the visit much more rewarding. Early morning visits tend to give the best chance of seeing birds active in the reeds and on the water.

The reserve's reed beds are considered unique in size within northern Baden-Württemberg, and its mudflats are unusually extensive for the region. The site also holds remnants of what was once the most famous fen in the Rhine floodplain, a detail easily missed by visitors focused on the birds.