Major Rivers of South Korea

1. Han River (한강) – 514 km; flows through Seoul; water source for 26M.
2. Nakdong River (낙동강) – 506 km; longest in SE; agriculture, industry.
3. Geum River (금강) – 395 km; SW; Daejeon, Gunsan water supply.
4. Seomjin River (섬진강) – 212 km; S; pristine, sweet fish (jungeo).
5. Yeongsan River (영산강) – 136 km; SW; Gwangju region.
6. Imjin River (임진강) – 254 km; NW; DMZ crossing; flood risk.

All flow west/south to Yellow Sea (except Nakdong → Korea Strait). Critical for water security, hydropower, recreation, ecology.