Hooker Lake

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Hooker Lake
Hooker Glacier Lake with icebergs floating in the lake.jpg
Hooker Glacier Lake in front of Aoraki / Mount Cook in summer
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Disc Plain red.svg
Hooker Lake
Location Mount Cook National Park, South Island
Coordinates 43°40′45″S170°06′30″E / 43.67917°S 170.10833°E / -43.67917; 170.10833
Type Proglacial lake
Primary outflows Hooker River
Basin  countriesNew Zealand
Max. length2.5 kilometres (1.6 mi) (2016) [1]
Max. width0.5 kilometres (0.31 mi) [1]
Max. depth136 metres (446 ft) [2]
Surface elevation877 metres (2,877 ft)
Frozenmost winters [2]

Hooker Lake is a proglacial lake that started to form in the late 1970s by the recent retreat of the Hooker Glacier. It is in the Hooker Valley, in the Aoraki / Mount Cook National Park in New Zealand's South Island, just south of Aoraki / Mount Cook.

Contents

Etymology

The geographic Hooker items were named by the Canterbury provincial geologist, Julius von Haast, after British botanist William Jackson Hooker. [3]

Description

Hooker Lake's length has doubled between 1990 and 2013 from 1.2 kilometres to 2.3 kilometres, the glacier retreating by over 50 metres (160 ft) per year. [4] It is expected to grow by another 4 kilometres (2.5 mi) as Hooker Glacier retreats further up the valley until the glacier's retreat will have reached the point where the glacier bed is higher than the lake's water level. [5]

The lake is one of the most accessible glacier lakes and can be reached year-round from the White Horse Hill camp ground near Mount Cook Village via the well-formed Hooker Valley Track. The track ends at a lookout point at the lake's shore, with a short path providing easy access to the shore.

In the warmer months icebergs can typically be seen floating in the water. The icebergs slowly drift from the terminus of the glacier at the northern end of the lake until close to the shore. The lake's water temperature is typically lower than 2 °C (36 °F). [2]

Shore of the frozen lake in winter, with people walking onto the ice View down to shore of frozen Hooker Glacier Lake in winter.jpg
Shore of the frozen lake in winter, with people walking onto the ice

In winter, the lake freezes over, [6] and at the coldest time of the year it can be safe to walk onto the ice.

Hooker Lake drains into Hooker River, its glacial waters blueish light grey due to the suspended glacial rock flour.

No boats tour the lake, but they do the large, nearby Tasman Lake.

See also

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Sealy Tarns is a small flat area with two small tarns halfway up the northern slopes of the Sealy Range, New Zealand. It is accessible from the Hooker Valley and Mount Cook Village via a tramping track maintained by the Department of Conservation (DOC). The track climbs steeply from about 850 m (2,789 ft) to 1,300 m (4,265 ft) via many switchbacks and over 2,200 steps built of large timber anchored into the ground. The track was established during the 1980s, and upgraded in 2012. The distance for a return trek from Hooker Valley Road to Sealy Tarns is 5.8 km.

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References

  1. 1 2 "Hooker Lake, Canterbury – NZ Topo Map". NZ Topo Map. Land Information New Zealand . Retrieved 26 August 2016.
  2. 1 2 3 Charles R. Warren & Martin P. Kirkbride (1998). Temperature and bathymetry of ice-contact lakes in Mount Cook National Park, New Zealand – New Zealand Journal of Geology and Geophysics. Vol. 41. Royal Society of New Zealand. pp. 133–143.
  3. "Hooker Valley". New Zealand Geographic . March–April 2011. Retrieved 20 April 2020.
  4. Clare M. Robertson (2013). Calving retreat and proglacial lake growth at Hooker Glacier, Southern Alps, New Zealand. Vol. 69. New Zealand Geographer. pp. 14–25.
  5. "Rapid melting of the terminal section of the Hooker Glacier". University of Auckland . Retrieved 26 August 2016.
  6. "Walks around Aoraki / Mount Cook village" (PDF). Department of Conservation . Retrieved 26 August 2016.