Struma

The Struma, also known as the Strymónas, is a river that flows through Bulgaria and Greece. Strymn was its old name. It covers a total area of 17,330 km2 (6,690 sq mi), with 8,670 km2 (3,350 sq mi) in Bulgaria, 6,295 km2 (2,431 sq mi) in Greece, and 2,365 km2 (913 sq mi) in North Macedonia. It rises in Bulgaria's Vitosha Mountain, flows westward, then southward, forming a series of canyons before entering Greek territory at Kula village. Likewise, it is the principal river feeding and departing Lake Kerkini, a significant migratory wildfowl center in Greece. The river empties into the Aegean Sea's Strymonian Gulf at Amphipolis, in the Serres regional unit. The river is 415 kilometers long (258 miles), with 290 kilometers (180 miles) in Bulgaria.

Parts of the river valley are part of a coal-producing area in Bulgaria (Pirin Macedonia), which was once more important than it is now; the southern half of the Bulgarian section is an important wine region. The Greek half is a large agricultural valley that is Greece's fourth-largest valley. The Konska River, Dragovishtitsa River, Rilska River, Blagoevgradska Bistritsa, Sandanska Bistritsa, Strumitsa, Pirinska Bistritsa, and Angitis are among the tributaries.

Length: 415 km