Wainaku is a census-designated place (CDP) in Hawai?i County, Hawai?i, United States. The population was 1,224 at the 2010 census. Wainaku is located on
unincorporated towns and localities: Honalo and the Akaka Falls Pepeekeo Wainaku Hilo Bay, the Wailuku River and the Rainbow Falls Hilo downtown: Pacific
including torpedograss, creeping panic, panic rampant, couch panicum, wainaku grass, quack grass, dog-tooth grass, and bullet grass. Its exact native
Volcano Volcano Golf Course Waikoloa Beach Resort Waikoloa Village Waimea Wainaku Waiohinu Ahualoa Ha?ena Hakalau Kawaihae Keauhou Keokea Miloli?i N?nole
Hilo Route 19 in Hilo 01955-01-011955 — Downgraded to county road; now Wainaku Street Route 22 3.7 6.0 Akaka Falls State Park Route 19 in Honomu 01955-01-011955