Akaka Falls, waterfall, Hawaii county, northeastern Hawaii island, Hawaii, U.S. A central feature of Akaka Falls State Park (65 acres [26 hectares]), it is easily reached by foot trail. The waterfall is located 14 miles (23 km) north of Hilo in a canyon 4 miles (6.5 km) inland from the village of Honomu on the Hamakua coast. Akaka Falls plunges 442 feet (135 metres) through dense tropical overgrowth into a pool within Kolekole Stream.