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The Wairoa River site at Railway Bridge is a HBRC fresh water quality monitoring site. This site is influenced by the tides. Interpretation of the ecological data may be affected by salt water.

The Wairoa River site is located on the mainstem of the river, approximately 13km from the Tamaki Strait. The channel is surrounded by farmland and partially shaded by large exotic trees. The upstream catchment covers an area of 14,884ha, predominantly comprised of rural land uses. This is a paired...

The Wairoa River flows through the Wairoa township and is used for waka ama, waterskiing, swimming, rowing, jetskiing and other boating.  A nearby destination playground is popular with families and a cycle/walking trail heads to the coast. Because this site can be influenced by both salt and freshw...

The Wairoa River U/S Mangaaruhe site is a HBRC fresh water quality and ecology monitoring site.

The Wairoa Tributary site is located on private property in a tributary stream of the Wairoa River. The stream is a second order, high gradient stream in the foothills of the Hunua Ranges, approximately 30km from the coast. The upstream catchment is entirely native forest and covers an area of 218ha...

The Wairua River above Whangarei flows southwest into the Kaipara Harbour. It is one of the major tributaries of the greater Wairoa River. The catchment upstream of the sampling site is predominantly pastoral and the river cuts through hard sediments along a low gradient.  This site was monitored by...

The Wairuna River is a tributary of the Pomahaka River. It runs through a rural catchment and water quality is impacted by intensive agriculture.

In 2020 Waikato Regional Council (WRC) transferred the monitoring functions of the Taupō catchment to Tūwharetoa Māori Trust Board (TMTB). This site is now monitored by TMTB. The water quality site on the Waitahanui River is accessed via an angler track off Blake Road and is a short distance from St...

Waitakaruru River (Hauraki Plains) water quality site at Coxhead Road Bridge. The riparian zone consists largely of grassy banks but there are also native and exotic trees that line the banks in places. The fine substrate present provides suitable habitat for dense aquatic plant growths at this site...

This site was monitored by NIWA up until 2022, and is one of the original National River Water Quality Network (NRWQN) sites dating back to 1989.   Click on an indicator below to see the monitoring results. Please refer to "Waitaki River at SH82" site for recent monitoring by Environment Canterbur...

This site was monitored by NIWA up until 2022, and is one of the original National River Water Quality Network (NRWQN) sites dating back to 1989.   Click on an indicator below to see the monitoring results. Please refer to "Waitaki River at SH1" site for recent monitoring by Environment Canterbury...

The Waitangi River flows east, from its origins close to the northern shore of Lake Omapere, reaching the Bay of Islands close to the historic settlement of Waitangi.