Lake Rotorangi
Encyclopedia
Lake Rotorangi is the largest lake
Lake
A lake is a body of relatively still fresh or salt water of considerable size, localized in a basin, that is surrounded by land. Lakes are inland and not part of the ocean and therefore are distinct from lagoons, and are larger and deeper than ponds. Lakes can be contrasted with rivers or streams,...

 in the New Zealand
New Zealand
New Zealand is an island country in the south-western Pacific Ocean comprising two main landmasses and numerous smaller islands. The country is situated some east of Australia across the Tasman Sea, and roughly south of the Pacific island nations of New Caledonia, Fiji, and Tonga...

 region of Taranaki. The reservoir
Reservoir
A reservoir , artificial lake or dam is used to store water.Reservoirs may be created in river valleys by the construction of a dam or may be built by excavation in the ground or by conventional construction techniques such as brickwork or cast concrete.The term reservoir may also be used to...

 was created in 1984 by the damming of the Patea River
Patea River
The Patea River is in Taranaki in the North Island of New Zealand. It runs for 105 kilometres from the eastern slopes of Mount Taranaki, passing east through Stratford before swinging south and reaching the South Taranaki Bight near the town of Patea....

.

History

Lake Rotorangi was formed in 1984 as a reservoir for generating electricity. The lake was formed by building an 80-metre high earth wall dam near the end of Ball Road in South Taranaki District
South Taranaki District
South Taranaki is a territorial authority on the west coast of New Zealand's North Island that contains the towns of Hawera, Manaia, Opunake, Patea, Eltham, and Waverley...

. The dam created then filled the Patea River
Patea River
The Patea River is in Taranaki in the North Island of New Zealand. It runs for 105 kilometres from the eastern slopes of Mount Taranaki, passing east through Stratford before swinging south and reaching the South Taranaki Bight near the town of Patea....

 valley for a distance of about 46 kilometres to make the longest reservoir of its type in New Zealand
New Zealand
New Zealand is an island country in the south-western Pacific Ocean comprising two main landmasses and numerous smaller islands. The country is situated some east of Australia across the Tasman Sea, and roughly south of the Pacific island nations of New Caledonia, Fiji, and Tonga...

.

The Patea Dam
Patea Dam
The Patea Dam is a high compacted earth fill–type hydroelectric dam in New Zealand, constructed between 1979 and 1984. The Patea Hydro Electric Scheme first produced power in May 1984. After construction difficulties, wetter than normal conditions had caused a six-month delay. It is operated by...

is owned by Trust Power and rated at 31 MW output (115 GWh per annum). Patea is operated as a peaking station. With around one week's storage capacity, the station generates electricity over periods when electricity prices are highest. It is also a public camping ground, used in the summer time for various water sports.

External links

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