Dreierwalder Aa

{{Infobox river

| name =Dreierwalder Aa

| image =

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| mouth_location = Speller Aa

| mouth_coordinates = {{coord|52.3618|N|7.4751|E|source:wikidata-and-enwiki-cat-tree_region:DE|display=it}}

| progression = Speller Aa→ {{RGroße Aa}}

| subdivision_type1 = Country

| subdivision_name1 = Germany

| subdivision_type2 = State

| length_km = 36.1

| length_ref = {{GeoQuelle|DE-NW|GSK3C}}

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| basin_size_km2 = 139

| basin_size_ref = {{GeoQuelle|DE-NW|GSK3C}}

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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.

References