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This site is monitored by NIWA and is one of the original National River Water Quality Network (NRWQN) sites dating back to 1989.

Ngaruroro River at Whanawhana site is a HBRC fresh water quality & ecology monitoring site.

The Ngaruroro River site downstream of Hawke's Bay Dairies (off Matapiro Road) is a HBRC fresh water quality & ecology monitoring site.

The North Otago Freshwater Management Unit (FMU) covers about 296,000 hectares and extends from Waitaki Bridge down through Oamaru, Moeraki, and Palmerston townships to the bottom of the southern branch of the Waikouaiti River. Major rivers within the FMU include the Kakanui, Shag, Waikouaiti and P...

This is a water quality site right below the control gates of Lake Waikare, therefore it is fed directly by Lake Waikare. The catchment is extensive, and it primarily comprises of pastural land.

The Waiotu and Whakapara rivers form the headwaters of the Wairua River. They begin in the eastern ranges between Whangarei and Kawakawa and join in the northern part of the Hikurangi Swamp. Both river catchments quickly turn from native forest to pastoral land, which is the dominant land use and bo...

Nottingham Stream is one of two main tributaries that converge to form the Huritini-Halswell River. It is a spring-fed plains stream, and one of the four sites monitored monthly in the Huritini-Halswell River catchment by Christchurch City Council for surface water quality. This site has been monito...

The Nukuhou River winds across a wide stretch of intensely farmed pastoral land.  This expanse of floodplain is bounded by rolling hill country with a mixture of drystock farming, forestry and indigenous forest cover.  The floodplain narrows as it moves north, bounded to the west by the Kererutahi F...

The Ōākuramatapū (Ōākura) River drains a mainly agricultural catchment. It is relatively short, rising in the nearby Kaitake range and the north-western area of Te Papa-Kura-o-Taranaki (the National Park). The river flows beside the small Oākura town and the historical Oākura Pa near the river mouth...

The water quality site on the Ohaeroa Stream is located under the SH22 Bridge. The riparian zone in the vicinity of the monitoring site is dense with barberry bushes, willows and manuka.

Ōhapi Creek flows to the northeast of Temuka.  It is classified as a spring-fed waterway and is a tributary of the Ōrāri River. Environment Canterbury currently samples water quality quarterly and macroinvertebrates are sampled once annually during summer as part of the aquatic ecosystem health moni...

Located East of Levin and in close proximity to the Tararua Ranges this is a popular picnicing and swimming spot during summer.