The Waikato River is the longest river in New Zealand, running for 425 kilometres (264 mi) through the North Island. It rises on the eastern slopes of Mount Ruapehu, joining the Tongariro River system and flowing through Lake Taupō, New Zealand's largest lake. It then drains Taupō at the lake's northeastern edge, creates the Huka Falls, and flows northwest through the Waikato Plains. It empties into the Tasman Sea south of Auckland, at Port Waikato. It gives its name to the Waikato region that surrounds the Waikato Plains. The present course of the river was largely formed about 17,000 years ago. Contributing factors were climate warming, forest being reestablished in the river headwaters and the deepening, rather than widening, of the existing river channel. The channel was gradually eroded as far up river as Piarere, leaving the old Hinuera channel through the Hinuera Gap high and dry. The remains of the old course are seen clearly at Hinuera, where the cliffs mark the ancient river edges. The Waikato's main tributary is the Waipā River, which converges with it at Ngāruawāhia.
Tokoroa is the fifth-largest town in the Waikato region of the North Island of New Zealand and largest settlement in the South Waikato District. Located 30 km southwest of Rotorua, close to the foot of the Mamaku Ranges, it is midway between Taupo and Hamilton on State Highway 1.
Lake Arapuni is one of several artificial lakes formed as part of a hydroelectricity scheme on the Waikato River in the North Island of New Zealand. It is 65 km (40 mi) southeast of Hamilton, to the north of Mangakino.
Lake Karapiro is an artificial reservoir lake on the Waikato River at Karapiro, 8 kilometres (5.0 mi) south-east of Cambridge in New Zealand's North Island. The lake was formed in 1947 by the damming of the Waikato River to store water for the 96-megawatt Karapiro power station. The lake is also one of two premier rowing venues in New Zealand and is the base for the country's high-performance rowing programme.
Mangakino is a small town on the banks of the Waikato River in the North Island of New Zealand. It is located close to the hydroelectric power station at Lake Maraetai, 85 kilometres (53 mi) southeast of Hamilton. The town and its infrastructure are administered as the Mangakino Pouakani ward by the Taupō District Council.
Ātiamuri is a former hydro village in the central North Island of New Zealand. It lies alongside State Highway 1 about 27 km south of Tokoroa and 38 km north of Taupō. It is bordered by the Waikato River and surrounded by pine plantations. Upper Ātiamuri, just north of the Waikato River, is a small community of lifestyle blocks, dairy farms and farm servicing businesses.
Arapuni is a rural town centre on the Waikato river in the South Waikato District of New Zealand. The town sits next to the Arapuni Dam, a hydroelectric dam at Lake Arapuni commissioned in 1929. The Arapuni Power Station consists of eight turbines which give a total output of 196 MW, the largest of the power stations on the Waikato river. The Arapuni hydro station is owned and operated by Mercury Energy.
Ngāti Raukawa is a Māori iwi with traditional bases in the Waikato, Taupo and Manawatu/Horowhenua regions of New Zealand. In 2006, 29,418 Māori registered their affiliation with Ngāti Raukawa.
State Highway 30 (SH 30) is a New Zealand state highway, linking the Waikato and Bay of Plenty towns of Te Kuiti, Mangakino, Rotorua, and Whakatane.
The Karāpiro Power Station is a hydroelectric power station at Karapiro on the Waikato River, in the North Island of New Zealand. The power station lies on Lake Karapiro, a major rowing regatta venue. Karāpiro is 30 kilometres (19 mi) south-east and upstream from the city of Hamilton and approx. 9 kilometres from Cambridge. It is the last of the eight hydroelectric power stations on the Waikato River.
Ātiamuri Power Station is a hydroelectric power station on the Waikato River, in the North Island of New Zealand. It is the third of eight hydroelectric power stations on the Waikato River. The station can easily be seen from State Highway 1 between Taupō and Tokoroa.
Maraetai Power Station is a hydroelectric power station on the Waikato River, in the North Island of New Zealand. It is the fifth of the eight hydroelectric power stations on the Waikato River, and at 360 MW, is the largest hydroelectric station on the Waikato.
Arapuni Power Station is a hydroelectric power station on the Waikato River, in the North Island of New Zealand. It is owned and operated by Mercury Energy, and is the seventh and penultimate hydroelectric power station on the Waikato River. It is also the oldest currently generating, the first government-built, and the largest capacity single hydroelectric power station on the Waikato River. The two power houses that make up the Maraetai Power Station have a larger combined capacity however.
Whakamaru Power Station is a hydroelectric power station on the Waikato River, in the North Island of New Zealand. It is the fourth hydroelectric power station on the Waikato River.
The Waikato and King Country regions of New Zealand are built upon a basement of greywacke rocks, which form many of the hills. Much of the land to the west of the Waikato River and in the King Country to the south has been covered by limestone and sandstone, forming bluffs and a karst landscape. The volcanic cones of Karioi and Pirongia dominate the landscape near Raglan and Kawhia Harbours. To the east, the land has been covered with ignimbrite deposits from the Taupo Volcanic Zone. Large amounts of pumice from the Taupo Volcanic Zone have been deposited in the Waikato Basin and Hauraki Plains.
The Arapuni Suspension Bridge is located just downstream from the Arapuni Power Station on the Waikato River in the South Waikato District of New Zealand. The 152-metre (499 ft) suspension bridge in the bush-lined gorge was built in the mid-1920s to allow workers from the village of Arapuni to access the power station construction site.
The Whakamaru to Brownhill Road transmission line is a double-circuit 400 kV-capable transmission line constructed by Transpower to increase the capacity of the National Grid between the southern Waikato and the city of Auckland. The line runs from the Whakamaru sub-station near the Whakamaru Power Station, over a distance of 186 kilometres (116 mi) to the new Brownhill Road substation near Whitford in southeastern Auckland. The line will initially be operated at 220 kV. From Brownhill Road, 220 kV underground cables connect the line to the Pakuranga sub-station in eastern Auckland. The project was the subject of considerable controversy and protest during the planning and approval stages. Construction of the line started in February 2010, and the line was commissioned on 30 October 2012. The transmission line forms the major part of a wider North Island Grid Upgrade project with a forecast cost to completion of $894 million.
The Mangakino Stream is a tributary of the Waikato River. It flows into Lake Maraetai just upstream of the Mangakino township.
The Pokaiwhenua Stream is a tributary of the Waikato River. It flows into Waikato River at Lake Karapiro.
