Wailuku River
The Wailuku River is a 28.0-mile-long (45.1 km) water course on the Island of Hawaiʻi in the Hawaiian Islands. It is the longest river in Hawai'i and its course lies mostly along the divide between the lava flows of Mauna Kea and those of Mauna Loa to the south. It arises at about the 10,800 feet (3,300 m) elevation along the eastern slope of Mauna Kea (19°48′26″N 155°25′13″W / 19.80722°N 155.42028°W). It flows generally eastward, descending steeply from the mountain and entering the Pacific Ocean at Hilo.
Wailuku River State Park is located along the lower reach of the river. One section of the park includes Rainbow Falls (19°43′9″N 155°6′34″W / 19.71917°N 155.10944°W), and another section Peʻepeʻe falls and an area called the Boiling Pots (a series of small falls and pools). The upper and middle reaches of the river are known for hunting of introduced game animals. The lower river is a popular destination for swimming and tubing. However the Wailuku River (which includes Boiling Pots) accounts for 25% of the river drowning deaths in the state.
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