Waiākea-Uka (IPA:/'waj.ə.kei.ə.'u.kə/) is an ancient subdivision (ahupuaʻa) in the Hilo District of the Big Island of Hawaiʻi, located mauka (mountain-side) of the Waiākea ahupua'a; its location is on the lower flanks of the volcano Mauna Loa. Because of this, one meaning of the name 'Waiākea-Uka' can be translated from 'Olelo Hawai'i as '(the) mountain-side (of) Waiākea'. Many ahupua'a have this -uka appelation, as the directions 'mountain-side' and 'sea-side' (makai) are the two best ways of orientating something in space on any of the islands.
Waiākea-Uka marks the most mauka portion of human settlement in the Hilo district. Waiākea-Uka has many expensive houses, including a Swiss-style chateau. The area is home to many traditional agricultural Hawaiian-style homes. As the area is mauka of Hilo Bay, there is no threat of tsunami; earthquakes are always a possibility anywhere on the island, and the area is currently termed lava zone 3. The most recent lava flows were in 1935, 1942 and 1984, with the 1984 coming quite close to the upper reaches of the area. Driving northwest on the Saddle Highway, about 15 miles outside of the Hilo extension, one can see the vast lava fields of the 1881, 1935 and 1942 lava flows. This same lava flow stopped one half mile east of the upper Kaumana area
Recently, there has been much growth in the agriculture of the area. There are some cattle, goat and dairy farms are located in Waiākea-Uka, as well as a state forest reserve (Upper Waiākea Forest Reserve).
There are four schools located in the Waiākea are, which Waiākea-Uka is served by: Waiakeawaena Elementary School, Waiakea Elementary School, Waiakea Intermediate School, and Waiakea High School. The Waiākea-Uka region is home to a million-dollar park and indoor gym. The area also highlights a variety of traditional stone/rock wall and palm grove cutting techniques; many homes have kept these walls up and a variety of linearly-cut coconut palm groves can be seen as home line designations.
The Hele-On bus number 6 runs from Hilo town to Waiākea-Uka, and the bus number 7 runs from Waiākea-Uka to Hilo town.
Climate and Topography
The topography of the entire area is quite varied; The main roads (Hoaka, 'Aina'ola, Kawailani) are laid over the same active rift zones that created the region over the past 100 years. Further earthquake activity and land settling has created a spectacular view of the Hilo region, including Hilo bay, as well as Mauna Kea. Waiākea Stream flows from the slopes of Mauna Loa at into Waiākea Pond at an elevation of only 10 feet (3.0 m) at .
As Waiakea-Uka is on the lower flanks of Mauna Loa, the area is known in for its rainfall; in August 2013, the Waiakea-Uka NWS rain gauge showed 83.96 inches of accumulated rain, while the Hilo International Airport rain gauge only registered 57.97 inches for the same length of time; though these two rain gauges are about 6 miles apart, this represents a difference of 25.99 inches, or about the average yearly rainfall of the state of Kansas. As a result, Papaya, Guava, Citrus and Plumeria are grown by many residents. In recent years, plums and peaches can be seen around many of the area's fields.
- Rubin, Ken; Rochelle Minicola (2004). "Mauna Loa eruption history". Hawaii Center for Volcanology. Retrieved 2009-06-15.
- "Waiakea Natural Area Reserve". Retrieved 2009-06-16.
- "Hele-On Bus Schedule". Retrieved 2013-08-27.
- U.S. Geological Survey Geographic Names Information System: Waiākea Stream
- "Waiakea Uka Rainfall Graph". National Weather Service/Pacific Rainfall. Retrieved 2013-08-27.