Allersee, Lake in Wolfsburg, Lower Saxony, Germany

The Allersee is a lake in Wolfsburg, created in 1969 and 1970 by rerouting the Aller and dredging out the basin; the excavated material was piled onto the surrounding wetland to form a park landscape. It measures 1230 m long, 270 m wide and 3 m deep on average, with a surface of 29 hectares. A wooden swimming island used as a bar lies on the north shore, and a dog beach has existed there since 2022.

The Allersee was created in 1969 by building a dam and redirecting the Aller River. It officially opened in 1970, marking the start of its transformation into a leisure and sports area for the city.

The name Allersee comes from the Aller River, which was redirected to create this body of water. Today, local people and visitors use it as a gathering place for leisure and water sports, where families swim, sail, and spend time together.

The water is monitored to high European standards and temperature can be checked through a local app. From May to October, a rescue group watches over the lake to keep it safe for swimming.

On the southern side, clubs organize sailing races and lessons in activities like canoeing and stand-up paddling. Visitors can rent a stand-up paddleboard right on the spot and try these water sports themselves.