North Rhine-Westphalia, commonly shortened to NRW in both written and spoken language, is a state in Western Germany. With more than 17.9 million inhabitants, it is the most populous state of Germany. Covering an area of 34,084 square kilometres (13,160 sq mi), it is the fourth-largest German state by size. Apart from the city-states, it is also the most densely populated state in Germany.
The Heller is a 30 km long river in western Germany. It is a left tributary of the Sieg. The source is located near Haiger in Hesse. It flows through Burbach and Neunkirchen in North Rhine-Westphalia. It flows into the river Sieg in Betzdorf, Rhineland-Palatinate. Its basin area is 204 km².
Abrocksbach is a river of North Rhine-Westphalia, Germany. It flows into the Ems near Harsewinkel.
Afte is a river of North Rhine-Westphalia, Germany. It is a tributary of the river Alme, into which it flows in Büren.
Ahse is a river of North Rhine-Westphalia, Germany. It flows into the Lippe near Hamm.
Baarbach is a river of North Rhine-Westphalia, Germany, a left tributary of the Ruhr.
Brucht is a river of North Rhine-Westphalia, Germany. It flows into the Nethe near Brakel.
Deilbach is a river of North Rhine-Westphalia, Germany. It flows into the Ruhr in Essen-Kupferdreh.
Dhünn is a 40 km (25 mi)-long river located in North Rhine-Westphalia, Germany. Its main source is near Wipperfürth in the Bergisches Land area. It runs in a south-westerly direction, and its mouth into the river Wupper is near Leverkusen, appr. 10 km (6.2 mi) north of Cologne.
Kendel is a river of North Rhine-Westphalia, Germany. It flows into the Niers near Goch-Hommersum, on the border with the Netherlands.
Leppe is a river of North Rhine-Westphalia, Germany. It flows into the Agger in Engelskirchen.
Mutzbach is a river of North Rhine-Westphalia, Germany. It flows into the Dhünn in Leverkusen.
Nesselbach is a river of North Rhine-Westphalia, Germany. It is a right tributary of the Lenne.
Niese is a river of North Rhine-Westphalia, Germany. It is a right tributary of the Emmer in Schieder-Schwalenberg.
Oetternbach is a river of North Rhine-Westphalia, Germany. It is a left tributary of the Bega west of Lemgo.
Ösper is a river of North Rhine-Westphalia, Germany. It flows into the Weser in Petershagen.
Sorpe is a river of Hochsauerlandkreis, North Rhine-Westphalia, western Germany. It is a left (western) tributary of the Röhr, which is a tributary of the Ruhr, a tributary of the Rhine.
Uhlenbach is a small river located in the northeastern region of the German state of North Rhine-Westphalia. It is a tributary of the Werre river, and part of the Weser River's river system. The Uhlenbach drains water from the Ravensberg Hills.
Wahnbach is a river of North Rhine-Westphalia, Germany. It flows into the Sieg near Hennef.
Wildenbach is a river of North Rhine-Westphalia, Germany. It flows into the Heller in Neunkirchen.
