Lake Tennyson (elevation 1,102 metres or 3,615 feet) is a glacial high-country lake in Canterbury, New Zealand. The first European settler to see the lake was Frederick Weld in 1853, who also named it. The headwaters of the Clarence River are just to the north, and the river flows through Lake Tennyson.
Lake Tennyson was discovered by Frederick Weld in 1853; Weld was the inaugural member of parliament for the Wairau electorate. The nearby Mount Weld is named for Weld, who climbed the mountain in March 1855. The reason for Weld exploring the area was his search for an overland route between Nelson and Canterbury for driving sheep. The lake is assumed to be named for the poet Alfred, Lord Tennyson. Weld described the lake as follows:
The small glacial lake is 1,102 metres (3,615 ft) above sea level. A broad moraine with a number of tarns (i.e. mountain pools) forms the downstream side of the lake. There is a basic camp ground provided by the Department of Conservation next to the lake, free to use on a first come, first served basis. The lake's perimeter is approximately 7.5 kilometres (4.7 mi) and can be walked, but wading in the lake is required in places.
Lake Tennyson is located within the headwaters of the Clarence River; the river flows through the lake. Lake Tennyson is framed by the St James Range to the west, and the Crimea Range to the east.
Lake Tennyson is part of Molesworth Station, New Zealand's largest farm. Access from Hanmer Springs (43 kilometres or 27 miles) is on Clarence Valley Road via Jacks Pass, and then Tophouse Road along the Clarence River to the Maling Pass car park. The Clarence River is crossed via bridge at the car park and after a short drive on the Rainbow Road, the access road to the lake is signposted on the left. This route is suitable for two-wheel drives.