The map below divides the Waikato region into seven major catchment zones – each containing Waikato Regional Council monitoring sites. For each site, we show how good the water quality is for human contact recreation and for ecological uses (the plants and animals that live in the water).
Click on a monitoring site for details, or the text at the bottom of the page provides the names of the streams and sites if that is easier for you.
Note that this page doesn't include Waikato River sites. Click here for Waikato River monitoring.
Graph data based on samples collected during the period 2011-15. Note: Apart from the NIWA and some other sites, baseflow clarity result is based on samples collected during the period 2008-12.
• Awakino River at Awakau Rd • Awakino River at Gribbon Rd • Awaroa River at Otaua Rd Bridge • Awaroa Stream at Rotowaro• Hikutaia River near Maratoto Rd • Hinemaiaia River at State Highway 1 • Kaniwhaniwha Stream at Wright Rd • Karapiro Stream at Hickey Rd Bridge • Kauaeranga River near Christian Camp • Kauwanui Stream at State Highway 5 Bridge • Kirikiriroa Stream at Tauhara Dr, Hamilton • Komakorau Stream at Henry Rd • Kuratau River - lakeside • Kuratau River at State Highway 41 (Moerangi) • Little Waipa Stream at Arapuni-Putararu Rd • Mangaharakeke Stream at State Highway 30 • Mangakara stream at state highway 5 • Mangakino River at Sandel Rd • Mangakotukutuku Stream at Peacock Rd, Hamilton • Mangamingi Stream at Paraonui Rd Bridge • Manganui River near Manganui Rd • Mangaohoi Stream at Maru Rd • Mangaokewa Stream at Te Kuiti • Mangaone Stream at Annebrook Rd• Mangaonua Stream at Hoeka Rd • Mangaonua Stream at Te Miro Rd • Mangaotaki River at State Highway 3 Bridge • Mangapiko Stream at Bowman Rd• Mangapu Stream at Otorohanga (SH3) • Mangatangi River at Maramarua • Mangatawhiri River at Lyons Rd • Mangatutu Stream at Walker Rd Bridge • Mangauika Stream at Te Tahi • Mangawara Stream at Rutherford Rd Bridge • Mangawhero Stream at Cambridge-Ohaupo Rd • Mangawhero Stream at Mangawara Rd • Mapara Stream at stream mouth • Marokopa River at Te Anga • Matahuru Stream at Waiterimu Rd Bridge • Mokau River at Awakau Rd • Mokau River at Mangaokewa Rd • Mokau River at Totoro Rd • Mokauiti Stream at Aria • Ohaeroa Stream at State Highway 22 • Ohautira River at Te Uku-Waingaro Rd • Ohinemuri River at Karangahake (NIWA site) • Ohinemuri River upstream of Waihi • Ohinemuri River upstream of Waikino • Ohote Stream at Whatawhata-Horotiu Rd• Oparau River at Oparau • Opuatia Stream at Ponganui Rd • Oraka Stream at Lake Rd • Otamakokore Stream at Hossack Rd • Piako River at Kiwitahi • Piako River at Paeroa-Tahuna Rd Bridge • Piakonui Stream at Piakonui Rd • Pokaiwhenua Stream at Arapuni-Putaruru Rd • Pueto Stream at Broadlands Rd Bridge • Puniu River at Bartons Corner Rd • Tahunaatara Stream at Ohakuri Rd • Tairua River at Morrison's Bridge, Hikuai • Tapu River on Tapu-Coroglen Rd• Tauranga-Taupo River near Kiko Rd • Tawarau River near Speedies Rd • Tokaanu Stream at Turangi • Tokaanu Tailrace • Tongariro River at Turangi (NIWA site) • Torepatutahi Stream at Vaile Rd • Waerenga Stream at Taniwha Rd • Waiau River at 309 Road • Waihaha River at Western Bay Rd • Waihou River at Okauia • Waihou River at Te Aroha (NIWA site) • Waihou River at Whites Rd • Waingaro River at Ruakiwi Rd • Waiohotu Stream at Waiohotu Rd • Waiomou Stream near Te Poi • Waiotapu Stream at Campbell Rd • Waiotapu Stream at Homestead Rd • Waipa River at Mangaokewa Rd • Waipa River at Otewa (NIWA site) • Waipa River at Otorohanga (SH3) • Waipa River at Pirongia-Ngutunui Rd Bridge • Waipa River at Whatawhata (NIWA site) • Waipapa Stream at Tirohanga Rd • Waitahanui River near Blake Rd • Waitakaruru River at Coxhead Rd Bridge • Waitawhiriwhiri Stream at Edgecumbe St, Hamilton • Waitekauri River at Waikino • Waitetuna River at Te Uku• Waitoa River at Landsdowne Rd Bridge • Waitoa River at Mellon Rd • Waitomo Stream at Otorohanga (SH 31) • Waitomo Stream near Waitomo Caves • Waiwawa River at Coroglen • Whakapipi Stream at State Highway 22 • Whakauru Stream at Tokoroa (SH1) • Whangamarino river at Island block rd • Whangamarino river at Jefferies rd bridge • Whangamata stream • Whanganui stream • Whangape stream at lake outlet • Wharekawa River at Wharekawa (SH25) • Whareroa Stream • Whirinaki Stream at Corbett Rd