Lumahaʻi River
| Lumahaʻi River | |
|---|---|
| Location | |
| Country | Hawaii, U.S. |
| Physical characteristics | |
| Source | |
| • location | Central mountains of Kauai |
| • elevation | 430 metres (1,410 ft) |
| Mouth | |
• location | Lumaha'i Beach |
| Length | 16 km (9.9 mi) |
| Basin size | 23 mi2 (60 km2) |
The Lumahaʻi River (ahupuhaʻa) is a river of northern Kauaʻi, Hawaii, US. It begins in a narrow, high-walled valley in the central mountains and enters the Pacific Ocean on the northwestern coast of the island, just east of Wainiha, on the western edge of Lumahaʻi Beach. Unaffected by development, its pristine waters contain populations of oʻopu (Stenogobius hawaiiensis) and hihiwai (shellfish) as well as the Hawaiian coot. During heavy rainfall in winter and spring, it is prone to flooding. The Lumahaʻi River Bridge traverses the waterway.