Borgwallsee

Borgwallsee is a lake in Mecklenburg-Vorpommern, Germany, at an elevation of . Its surface area is . The average depth is . Apart from the woods on the southern shore, the area surrounding the lake is used widely for agriculture.
Borgwallsee is a drinking water reservoir serving the city of Stralsund. As such, water activities are restricted and bathing is allowed only in designated areas.