Segre is a river in northeastern Spain, flowing through the Catalonia region. It is approximately 265 kilometers long and is a tributary of the Ebro River. The Segre passes through several towns, including Lleida, and is known for its scenic landscapes and recreational opportunities. The river has historical significance, as it has been a vital water source for agriculture and settlements in the area. Additionally, the Segre is home to various species of fish and wildlife, making it an important ecological habitat. Its waters are also used for irrigation, supporting the local economy.