The Wupper is a river located in the state of North Rhine-Westphalia, Germany. It flows for about 115 kilometers, starting in the Sauerland region and eventually joining the Rhine River near the city of Düsseldorf. The river is known for its picturesque landscapes and is an important waterway for the surrounding communities. The Wupper basin is characterized by steep valleys and lush forests, making it a popular destination for outdoor activities such as hiking and cycling. The river also plays a significant role in the local economy, supporting industries like textile manufacturing and hydropower generation.