Lake Arapuni

Lake Arapuni
Lake Arapuni with the dam on the left and a piece of the canal that leads to the power station in the foreground
Location: southwest of the town of Tokoroa in the Waikato region , North Island , New Zealand Tributaries: Waikato River Drain: Waikato River
New Zealand
Coordinates	38 ° 7 '40 "  S , 175 ° 37' 47"  O Coordinates: 38 ° 7 '40 "  S , 175 ° 37' 47"  O
Data on the structure
Lock type:	Gravity dam
Construction time:	1924-1929
Height of the barrier structure :	64 m
Crown length:	94 m
Crown width:	5.8 m
Base width:	52 m
Power plant output:	196.66 MW
Operator:	Mercury NZ Limited
Data on the reservoir
Altitude (at congestion destination )	109.02 m - 112.18 m
Water surface	9.3 km²
Reservoir length	22 km
Reservoir width	90 - 800 m
Maximum depth	49 m
Catchment area	249 km²

The Lake Arapuni is the river system of the Waikato River belonging Reservoir on the North Island of New Zealand .

Origin of name

In the Māori language, the name “ Arapuni ” is composed of the words “ ara ” for “way” and “ puni ” for “blocked” and possibly means “a path blocked by an obstacle” .

geography

The 9.3 km² large Lake Arapuni is located around 35 km southeast of the city of Cambridge and around 15 km west of the city of Tokoroa . The lake, which extends in the valley of the former river bed of the Waikato River , has a length of around 22 km and its width varies between 90 and a maximum of 800 m. The height of the lake varies depending on the water level between 109.02 m and 112.18 m, with a maximum lake depth of 49 m. Its immediate water catchment area is 249 km².

The reservoir can be reached from the east on New Zealand State Highway 1 via the small town of Putaruru , from which the Arapuni Road branches off to the west and leads to the small town of Arapuni and the dam of the lake.

Administratively, the lake belongs to the Waikato region .

The Lake Arapuni follows the Reservoir Lake Karapiro , the reservoirs Lake Waipapa , Lake Maraetai , Lake Whakamaru , Lake Atiamuri , Lake Ohakuri and Lake Aratiatia go ahead of him.

history

The reservoir and the associated hydropower plant were commissioned in 1929 and were designed for a nominal output of almost 200  MW . As of 2020, the operator of the hydropower plant is the majority state-owned company Mercury NZ Limited .

See also

• Arapuni Power Station

literature

• CHD Magadza : Physical and chemical limnology of six hydroelectric lakes on the Waikato River, 1970-72 . In: New Zealand Journal of Marine and Freshwater Research . Vol. 13, Issue 4 , 1979, pp. 561-572 , doi : 10.1080 / 00288330.1979.9515835 (English).
• Tracey Edwards, Mary de Winton, John Clayton : Assessment of the ecological condition of lakes in the Waikato region using LakeSPI - 2010 . In: Environment Waikato (Ed.): Environment Waikato Technical Report . 2010/24 , June 2010, ISSN  1177-9284 (English).

Individual evidence

1. ↑ ^{a b c d} Topo maps . Land Information New Zealand , accessed January 5, 2020 .  
2. ↑ 08. Arapuni - Overview . Mighty River Power , archived from the original on July 20, 2011 ; accessed on January 9, 2020 (English, original website no longer available).  
3. ^ ^{A b} Edwards, Winton, Clayton : Assessment of the ecological condition of lakes in the Waikato region using LakeSPI - 2010 . 2010, p.  3 .
4. ↑ Coordinates and longitudes were determined using Goggle Earth Pro Version 7.3.2.5776 on January 5th, 2020
5. ^ Waikato Lake Levels . Mercury NZ Limited , accessed January 5, 2020 .  
6. ↑ Magadza : Physical and chemical limnology of six hydroelectric lakes on the Waikato River, 1970-72 . 1979, p.  572 .
7. ↑ Hydro Generation . Mercury NZ Limited , accessed January 5, 2020 .  
8. ↑ 08. Arapuni . Mighty River Power , archived from the original on July 20, 2011 ; accessed on January 5, 2020 (English, original website no longer available).