Lake Taupo

Lake Taupo is a lake in the North Island of New Zealand. It is in the caldera of the Taupo Volcano. With a surface area of, it is the largest lake by surface area in New Zealand, and the second largest freshwater lake by surface area in geopolitical Oceania after Lake Murray (Papua New Guinea). Motutaiko Island lies in the south east area of the lake.Lake Taupo has a perimeter of approximately 193 kilometres and a deepest point of 186 metres. It is drained by the Waikato River (New Zealand's longest river), and its main tributaries are the Waitahanui River, the Tongariro River, and the Tauranga Taupo River. It is a noted trout fishery with stocks of introduced brown and rainbow trout.Lake formation and volcanismLake Taupo is in a caldera created by a supervolcanic eruption which occurred approximately 26,500 years ago. According to geological records, the volcano has erupted 28 times in the last 27,000 years. It has ejected mostly rhyolitic lava, although Mount Tauhara formed from dacitic lava.