Aa (also: ''Westfälische Aa'', "

Westphalia Westphalia (; ; ) is a region of northwestern Germany and one of the three historic parts of the state of North Rhine-Westphalia. It has an area of and 7.9 million inhabitants. The territory of the region is almost identical with the h ...

n Aa") is a river of

North Rhine-Westphalia North Rhine-Westphalia or North-Rhine/Westphalia, commonly shortened to NRW, is a States of Germany, state () in Old states of Germany, Western Germany. With more than 18 million inhabitants, it is the List of German states by population, most ...

Germany Germany, officially the Federal Republic of Germany, is a country in Central Europe. It lies between the Baltic Sea and the North Sea to the north and the Alps to the south. Its sixteen States of Germany, constituent states have a total popu ...

. It is a left tributary of the

Werre The Werre () is a river in the Detmold region (Regierungsbezirk) of North Rhine-Westphalia, Germany, left tributary of the Weser. Its source is near Horn-Bad Meinberg. The total length of the Werre is 71.9 km. The Werre flows generally nor ...

, which it joins in

Herford Herford (; ) is a town in North Rhine-Westphalia, Germany, located in the lowlands between the hill chains of the Wiehen Hills and the Teutoburg Forest. It is situated in the cultural region of Ostwestfalen-Lippe (OWL) and the Detmold (administrat ...

. It is formed by the confluence of two small streams in

Bielefeld Bielefeld () is a city in the Ostwestfalen-Lippe Region in the north-east of North Rhine-Westphalia, Germany. With a population of 341,755, it is also the most populous city in the administrative region () of Detmold (region), Detmold and the L ...

-Milse. In its upper part, it is called Johannisbach.

References

Rivers of North Rhine-Westphalia Rivers of Germany {{NorthRhineWestphalia-river-stub

See also

References