Ngawha Geothermal Field
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The Ngawha geothermal field is a
geothermal Geothermal is related to energy and may refer to: * Geothermal energy, useful energy generated and stored in the Earth * Geothermal activity, the range of natural phenomena at or near the surface, associated with release of the Earth's internal he ...
area in the
North Island The North Island ( , 'the fish of Māui', historically New Ulster) is one of the two main islands of New Zealand, islands of New Zealand, separated from the larger but less populous South Island by Cook Strait. With an area of , it is the List ...
of
New Zealand New Zealand () is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and List of islands of New Zealand, over 600 smaller islands. It is the List of isla ...
. It is situated approximately 5 km east of
Kaikohe Kaikohe is the seat of the Far North District of New Zealand, situated on State Highway 12 about from Auckland, and about from Whangārei. It is the largest inland town and highest community above sea level in the Northland Region. With a pop ...
and is centred on the village of Ngawha Springs. The field covers an area of around 25 km2, much smaller than the other major high-temperature geothermal field in New Zealand, the
Taupō Volcanic Zone The Taupō Volcanic Zone (TVZ) is a volcano, volcanic area in the North Island of New Zealand. It has been active for at least the past two million years and is still highly active. Mount Ruapehu marks its south-western end and the zone runs n ...
. The
hot springs A hot spring, hydrothermal spring, or geothermal spring is a Spring (hydrology), spring produced by the emergence of Geothermal activity, geothermally heated groundwater onto the surface of the Earth. The groundwater is heated either by shallow ...
arising in this area are slightly acidic and are rich in ammonia, bicarbonate, boron and mercury, which is not typical of springs in New Zealand. Top Energy owns and operates the Ngāwhā Geothermal Power Station, which opened in 1998 and has been expanded several times since.


References

Geothermal areas in New Zealand Kaikohe Far North District Landforms of the Northland Region {{Northland-geo-stub