|Location||Queenstown-Lakes District, Otago Region, South Island|
|Primary inflows||Hunter River|
|Primary outflows||Hāwea River|
|Basin countries||New Zealand|
|Max. length||35 km (22 mi)|
|Surface area||141 km2 (54 sq mi)|
|Average depth||100.5 m (330 ft)|
|Max. depth||392 m (1,286 ft)|
|Water volume||14.17 km3 (3.40 cu mi)|
|Surface elevation||348 m (1,142 ft)|
Lake Hāwea is New Zealand's ninth largest lake.
The lake is in the Otago Region at an altitude of 348 metres. It covers 141 km² and reaches 392 metres deep.
Lake Hāwea stretches 35 kilometres from north to south. It lies in a glacial valley formed during the last ice age, and is fed by the Hunter River. Nearby Lake Wānaka lies in a parallel glacial valley eight kilometres to the west. At their closest point, a rocky ridge called The Neck, the lakes are only 1000 metres apart.
Lake Hāwea is dammed to the south by an ancient terminal moraine created some 10,000 years ago. In 1958 the lake was artificially raised 20 metres to store more water for increased hydroelectric power generation at the Roxburgh Dam.
The only flat land around the lake is at its southern end, surrounding its outflow into the Hāwea River, a short tributary of the Clutha / Matau-au, which it joins near Albert Town. The settlement of Lake Hāwea is found at the lake's southern shore.
The lake is a popular resort, well used in the summer for fishing, boating and swimming. The nearby mountains and fast-flowing rivers allow for adventure tourism year-round, such as jetboating and skiing.
For Māori, the Wānaka and Hāwea area was a natural crossroads. The Haast Pass led to the West Coast and its pounamu; the Cardrona Valley led to the natural rock bridge "Whatatorere" which was the only place that the Kawarau River and Clutha River / Mata-Au could be crossed without boats. Mōkihi reed boats enabled a swift return downriver to the east coast.
Until the early nineteenth century, the area was visited annually by Ngāi Tahu who sought pounamu in the mountains above the Haast River and hunted eels and birds over summer, returning to the east coast by descending the Clutha River / Mata-Au in reed boats. Ngāi Tahu use of the land was ended by attacks by North Island tribes. In 1836, the Ngāti Tama chief Te Pūoho led a 100-person war party, armed with muskets, down the West Coast and over the Haast Pass: they fell on the Ngāi Tahu encampment between Lake Wānaka and Lake Hāwea, capturing 10 people and killing and eating two children. Although Te Pūoho was later killed by the southern Ngāi Tahu leader Tūhawaiki, Maori seasonal visits to the area ceased.
The first European to see the lake was Nathanael Chalmers in 1853. Guided by Reko and Kaikōura, he walked from Tuturau (Southland) to the lakes via the Kawarau River. He was stricken by dysentery, so his guides returned him down the Clutha in a reed boat.
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