Dreierwalder Aa
| Dreierwalder Aa | |
|---|---|
![]()  | |
| Location | |
| Country | Germany | 
| State | North Rhine-Westphalia | 
| Physical characteristics | |
| Mouth | |
 • location  | Speller Aa | 
 • coordinates  | 52°21′42″N 7°28′30″E / 52.3618°N 7.4751°E | 
| Length | 36.1 km (22.4 mi)[1] | 
| Basin size | 139 km2 (54 sq mi)[1] | 
| Basin features | |
| Progression | Speller Aa→ Große Aa→ Ems→ North Sea | 
Dreierwalder Aa (also: Ibbenbürener Aa, Ledder Mühlenbach, Hörsteler Aa) is a river of North Rhine-Westphalia, Germany. It flows into the Speller Aa in Spelle.
See also
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