Segre

a river in Spain, with its upper course in France; a left tributary of the Ebro River. The Segre is 265 km long and drains an area of 22,400 sq km. It rises in the Eastern Pyrenees and flows primarily through an area of mountains and hills. The Segre is at high water during cold periods of the year; the average flow rate is approximately 250 cu m per sec. The basin has reservoirs and hydroelectric power plants, including Tabescan and the Tremp and Camarasa reservoirs; the river is used for irrigation. The city of Lérida is situated on the Segre.