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Lake Kohata is a small coastal dune lake located within the Whanganui River Catchment. In 2015, Horizons Regional Council commenced quarterly water quality monitoring of the lake by helicopter. In 2015, NIWA assessed the ecological condition of the lake using Submerged Plant Indicators (LakeSPI).

Lake Koitiata is a shallow coastal dune lake located within the Rangitīkei River Catchment. In 2014, Horizons Regional Council commenced quarterly water quality monitoring of the lake by helicopter. In 2015, NIWA assessed the ecological condition of the lake using Submerged Plant Indicators (LakeSPI...

Lake Koputara is a shallow coastal dune lake located within the Rangitīkei River Catchment. In 2014, Horizons Regional Council commenced quarterly water quality monitoring of the lake by helicopter. In 2016, NIWA assessed the ecological condition of the lake using Submerged Plant Indicators (Lake...

Lake Lyndon / Te Hāpua Waikawa is a high country lake located in the upper Rakaia River catchment near Porters Pass. This lake is monitored for water quality in the centre of the lake, during the summer months. State and trends may not be displayed on this page due to limited sampling frequency...

Lake Marion is a small and deep high country lake located in the Hurunui River catchment north of Lake Sumner. State and trends may not be displayed on this page due to limited sampling frequency. But the available data can still be accessed for each parameter by clicking on the icon for the paramet...

Lake Opuha is a man-made reservoir designed for irrigation, near the township of Fairlie. Ewarts Corner boat ramp is located on the northern end of the lake near the Opuha river inflows. This site is monitored for recreational water quality during the summer months only.  

Lake Pauri is a deep coastal dune lake located within the Whanganui River catchment and is used by the Wanganui Sailing Club for youth lessons. In 2014, Horizons Regional Council commenced water quality monitoring by boat on a quarterly basis (monthly since 2019). In 2015, NIWA assessed the ecologic...

Lake Pearson / Ōpōrea is a high country lake located near the upper Waimakariri River. This lake is monitored for water quality in the centre of the lake, during the summer months. State and trends may not be displayed on this page due to limited sampling frequency. But the available data can still...

Lake Rerewhakaaitu is the southernmost Rotorua Te Arawa lake. At 438m above sea level, it is also the highest. It occupies a shallow basin in the centre of its 37sq km catchment and has a maximum depth of 15.8m. Pasture is the dominant land cover, although exotic and indigenous forest cover has incr...

Lake Rotoehu was formed by the lava damming of a river valley. Exotic forestry in the catchment area has increased since 1977 and land cover is now evenly distributed between forest, indigenous vegetation and pasture. Geothermal inputs enter the lake via a stream to the southeast at Waitangi Springs...

Lake Rotoiti is the third-largest Rotorua Te Arawa lake and occupies part of the Haroharo Caldera. The lake deepens from west to east, changing from an average of 10m deep to a maximum of 125m northeast of Gisborne Point. The 123.7sq km catchment is mainly covered in indigenous vegetation (36.4 perc...

Lake Rotongaio is a polymictic lowland lake and is the shallowest lake in the cluster of lakes known as the Putere Lakes. The lake covers 9.3 hectares and has a maximum depth of 5 metres. The lake has high cultural significance for local iwi. Monthly surface water quality monitoring is currently und...