The Suså River is the longest river in Denmark, stretching approximately 78 kilometers. It flows through the region of Zealand, starting from the Suså Lake and eventually emptying into the Kalundborg Fjord. The river is known for its scenic beauty and diverse wildlife, making it a popular spot for fishing and recreational activities. The river's basin supports various ecosystems, including wetlands and forests, which are home to numerous species of birds and fish. The Suså River also plays a significant role in local agriculture, providing irrigation for nearby farms. Its historical significance includes serving as a trade route in earlier times.