The Jizera River is a river located in the northern part of the Czech Republic. It flows for approximately 70 kilometers, starting in the Jizera Mountains and eventually joining the Elbe River. The river is known for its picturesque landscapes and is a popular destination for outdoor activities such as hiking and cycling. The Jizera River also serves as a natural border between the Czech Republic and Poland in some areas. Its basin is home to diverse flora and fauna, making it an important ecological region. The river supports various recreational activities, including fishing and kayaking, attracting both locals and tourists.