| Other name |
|
|---|---|
| Source1 coordinates | 52.4803°N 7.8487°E |
| Mouth location | Große Aa |
| Mouth coordinates | 52.4726°N 7.5593°E |
| Country | Germany |
| States | |
| Length | 31.0 km |
| Basin size | 137 km² |
Schaler Aa is a river of Lower Saxony and North Rhine-Westphalia, Germany. It flows into the Große Aa south of Freren.
The river springs as Weeser Aa southeast of the Ankum Heights and east of Merzen in Lower Saxony.[1] After crossing the boundary between Lower Saxony and North Rhine-Westphalia, it changes it name into Halverder Aa[2] and near Halverde (a district of Hopsten) into Halverder-Schaler Aa.[3] Near Schale (a district of Hopsten), it changes its name again into Schaler Aa.[4] Finally, it discharges into the Große Aa south of Freren.[5]