Famous Rivers Starting with A: Amazon, Amur, Arkansas, Aras, Araguaia

Five notable rivers beginning with A:

1. Amazon River (South America): 6,400 km, world's largest discharge (209,000 m³/s), largest basin (6.9M km²), no bridges on main stem
2. Amur River (Russia/China): 4,444 km (with Argun), 10th longest, forms border, endemic salmonids, Amur leopard habitat
3. Arkansas River (USA): 2,364 km, 6th longest US, Colorado Rockies → Mississippi at Napoleon, AR; major irrigation, recreation
4. Aras / Araxes River (Turkey/Armenia/Iran/Azerbaijan): 1,072 km, Kura tributary → Caspian, historic Silk Road corridor, political border
5. Araguaia River (Brazil): 2,627 km, Tocantins tributary, Bananal Island (world's largest fluvial island), Araguaia basin biodiversity hotspot

Honorable Mentions

• Atbara (Sudan/Ethiopia) — Nile's last major tributary
• Amu Darya (Central Asia) — Aral Sea disaster
• Awash (Ethiopia) — Rift Valley, Lucy fossil site
• Allegheny (USA) — Ohio headwater

From the world's mightiest to a border stream, "A" rivers span the hydrologic spectrum.