Waimea River (Hawaii)

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Waimea River, Hawaii (5535233654).jpg
Country United States
State Hawaii
Region Kauai
 - left Makaweli River
Source Alaka'i Swamp (confluence of the Waiahulu and Po'omau streams)
 - coordinates 22°05′25″N 159°39′19″W / 22.09028°N 159.65528°W / 22.09028; -159.65528
 - location Waimea, Kauai County, Hawaii
 - coordinates 21°57′17″N 159°39′35″W / 21.95472°N 159.65972°W / 21.95472; -159.65972Coordinates: 21°57′17″N 159°39′35″W / 21.95472°N 159.65972°W / 21.95472; -159.65972
Length 12 mi (19 km)

The Waimea River is a major river on the island of Kauai in the U.S. state of Hawaii. At 12.1 miles (19.5 km) in length,[1] it is one of the longest rivers in the Hawaiian Islands, draining one sixth of the total area of the island.

It rises in a wet plateau of the island's central highlands, in the Alaka'i Swamp, the largest high-elevation swamp in the world. It flows south, passing through the spectacular 3,000-foot-deep (910 m) Waimea Canyon, known as the "Grand Canyon of the Pacific."

The valleys of the Waimea River and its tributary, the Makaweli River, were once heavily populated. It enters the Pacific Ocean at Waimea, near the 1778 landing place of Captain Cook on Kauai.


  1. ^ U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. The National Map, accessed April 28, 2011

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