Lake Waitaki is the smallest, oldest and farthest downstream of the three man-made lake

Lake

A lake is a body of relatively still fresh or salt water of considerable size, localized in a basin, that is surrounded by land. Lakes are inland and not part of the ocean and therefore are distinct from lagoons, and are larger and deeper than ponds. Lakes can be contrasted with rivers or streams,...

s of the Waitaki

Waitaki River

The Waitaki River is a large river in the South Island of New Zealand, some 110 km long. It is the major river of the Mackenzie Basin.It is a braided river which flows through Lake Benmore, Lake Aviemore and Lake Waitaki. These are ultimately fed by three large glacial lakes, Pukaki, Tekapo,...

 hydroelectric

Hydroelectricity

Hydroelectricity is the term referring to electricity generated by hydropower; the production of electrical power through the use of the gravitational force of falling or flowing water. It is the most widely used form of renewable energy...

 project in New Zealand

New Zealand

New Zealand is an island country in the south-western Pacific Ocean comprising two main landmasses and numerous smaller islands. The country is situated some east of Australia across the Tasman Sea, and roughly south of the Pacific island nations of New Caledonia, Fiji, and Tonga...

's South Island

South Island

The South Island is the larger of the two major islands of New Zealand, the other being the more populous North Island. It is bordered to the north by Cook Strait, to the west by the Tasman Sea, to the south and east by the Pacific Ocean...

. It lies below lakes Aviemore

Lake Aviemore

Lake Aviemore or Mahi Tikumu is a man-made lake in New Zealand's South Island, part of the Waitaki hydroelectric scheme. Immediately upstream is Lake Benmore and downstream Lake Waitaki...

 and Benmore

Lake Benmore

Lake Benmore is a lake located in the South Island of New Zealand. It was artificially created in the 1960s by construction of Benmore Dam. The lake covers an area of approximately 75 km²...

 on the Waitaki River

Waitaki River

The Waitaki River is a large river in the South Island of New Zealand, some 110 km long. It is the major river of the Mackenzie Basin.It is a braided river which flows through Lake Benmore, Lake Aviemore and Lake Waitaki. These are ultimately fed by three large glacial lakes, Pukaki, Tekapo,...

, close to the town of Kurow

Kurow

Kurow is a town in the Waitaki Valley in the South Island of New Zealand, 55 kilometres inland from OamaruThe name of the town is an Anglicised form of the name of the nearby mountain Te Kohurau....

. It is part of the traditional boundary of the Canterbury

Canterbury, New Zealand

The New Zealand region of Canterbury is mainly composed of the Canterbury Plains and the surrounding mountains. Its main city, Christchurch, hosts the main office of the Christchurch City Council, the Canterbury Regional Council - called Environment Canterbury - and the University of Canterbury.-...

 and Otago

Otago

Otago is a region of New Zealand in the south of the South Island. The region covers an area of approximately making it the country's second largest region. The population of Otago is...

 regions (although the official border has been moved southward to include the entire lake, as well as the entire northwest portion of Waitaki District

Waitaki District

The Waitaki district, in the Canterbury and Otago regions of New Zealand, straddles the traditional border between the two regions, the Waitaki River. It has a land area of 7,151.94 km² , divided 59.28% to Canterbury Region and 40.72% to Otago Region. It is the only district on the South...

within the Canterbury Region. http://www.waitaki.govt.nz/NR/rdonlyres/5DD2BC27-EC9C-4E9C-A07D-22EE6F38C991/38699/COUNCILBOUNDARYMAP.jpg

The lake is created by Waitaki Dam, a 36m high spill weir dam built between 1928 and 1934. The Waitaki power station has an installed capacity of 105MW. Waitaki was the last dam built in New Zealand with excavation done with pick and shovel, not heavy machinery. The power station is to be upgraded by Meridian Energy between 2011 and 2016 at a projected cost of $NZ 60 - 80 million.