Omanawa River

Last updated
Omanawa River
Location
Country New Zealand
Physical characteristics
Mouth  
 - location
 Wairoa River
Length25 km (16 mi)

The Omanawa River is a river of the Bay of Plenty Region of New Zealand's North Island.

New Zealand Country in Oceania

New Zealand is a sovereign island country in the southwestern Pacific Ocean. The country geographically comprises two main landmasses—the North Island, and the South Island —and around 600 smaller islands. New Zealand is situated some 2,000 kilometres (1,200 mi) east of Australia across the Tasman Sea and roughly 1,000 kilometres (600 mi) south of the Pacific island areas of New Caledonia, Fiji, and Tonga. Because of its remoteness, it was one of the last lands to be settled by humans. During its long period of isolation, New Zealand developed a distinct biodiversity of animal, fungal, and plant life. The country's varied topography and its sharp mountain peaks, such as the Southern Alps, owe much to the tectonic uplift of land and volcanic eruptions. New Zealand's capital city is Wellington, while its most populous city is Auckland.

North Island The northern of the two main islands of New Zealand

The North Island, also officially named Te Ika-a-Māui, is one of the two main islands of New Zealand, separated from the larger but much less populous South Island by Cook Strait. The island's area is 113,729 square kilometres (43,911 sq mi), making it the world's 14th-largest island. It has a population of 3,749,200.

An important tributary of the Wairoa River it flows north from the northern edge of the Mamaku Plateau, through a valley to enter a 122 m (400 ft) long narrow gorge through which the river flows in a series of rapids before 11.3 km (7.0 mi) above the confluence with the Wairoa the river drops 35 metres over the Omanawa Falls. [1] [2] At the base of the falls is a large deep pool approximately 100 metres in diameter. [1] At the back and under the lip of the falls, the river has hollowed out a huge cavern. To one side of the falls is the Omanawa Falls Power Station which is powered by water diverted around the falls.

Omanawa Falls Power Station

The Omanawa Falls Power Station is a run of the river hydroelectric facility on the Omanawa River, in the Bay of Plenty in New Zealand. Built in 1915 to supply electricity to the town of Tauranga, it was the Southern Hemisphere's first underground power station.

The Omanawa joins the Wairoa River about 9.7 km (6.0 mi) from its mouth and 10 km (6.2 mi) southwest of Tauranga. [1] [3]

Tauranga Metropolitan area in North Island, New Zealand

Tauranga is the most populous city in the Bay of Plenty region of the North Island of New Zealand. It was settled by Māori late in the 13th century and by Europeans in the early 19th century and was constituted as a city in 1963. Tauranga City is the centre of the fifth largest urban area in New Zealand, with an urban population of 141,600.

See also

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Aniwhenua Power Station

The Aniwhenua power station is a hydroelectric power facility in Bay of Plenty in New Zealand located on the Rangitaiki River upstream of the Matahina Power Station. Water is drawn from behind a dam above the Aniwhenua Falls and diverted through a canal and a headpond to the power station before being discharged back into the river. The power station is named after the falls which are adjacent to the power station.

References

  1. 1 2 3 "Municipal Enterprise: Hydro-Electric Installation" (PDF), Bay Of Plenty Times, XLIV (6517), October 19, 1915, retrieved February 3, 2018
  2. ↑ "Omanawa Falls". New Zealand Waterfalls. Retrieved February 4, 2019.
  3. ↑ "Place name detail: Omanawa River". New Zealand Gazetteer. Land Information New Zealand . Retrieved 2010-04-23.

Coordinates: 37°45′38″S176°04′18″E / 37.760575°S 176.071578°E / -37.760575; 176.071578

Geographic coordinate system Coordinate system

A geographic coordinate system is a coordinate system that enables every location on Earth to be specified by a set of numbers, letters or symbols. The coordinates are often chosen such that one of the numbers represents a vertical position and two or three of the numbers represent a horizontal position; alternatively, a geographic position may be expressed in a combined three-dimensional Cartesian vector. A common choice of coordinates is latitude, longitude and elevation. To specify a location on a plane requires a map projection.


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