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Eutrophication is a general term describing a process in which nutrients accumulate in a body of water, resulting in an increased growth of microorganisms that may deplete the oxygen of water. Eutrophication may occur naturally or as a result of human actions. Manmade, or cultural, eutrophication occurs when sewage, industrial wastewater, fertilizer runoff, and other nutrient sources are released into the environment. Such nutrient pollution usually causes algal blooms and bacterial growth, resulting in the depletion of dissolved oxygen in water and causing substantial environmental degradation.
The Waikato River is the longest river in New Zealand, running for 425 kilometres (264 mi) through the North Island. It rises on the eastern slopes of Mount Ruapehu, joining the Tongariro River system and flowing through Lake Taupō, New Zealand's largest lake. It then drains Taupō at the lake's northeastern edge, creates the Huka Falls, and flows northwest through the Waikato Plains. It empties into the Tasman Sea south of Auckland, at Port Waikato. It gives its name to the Waikato region that surrounds the Waikato Plains. The present course of the river was largely formed about 17,000 years ago. Contributing factors were climate warming, forest being reestablished in the river headwaters and the deepening, rather than widening, of the existing river channel. The channel was gradually eroded as far up river as Piarere, leaving the old Hinuera channel through the Hinuera Gap high and dry. The remains of the old course are seen clearly at Hinuera, where the cliffs mark the ancient river edges. The Waikato's main tributary is the Waipā River, which converges with it at Ngāruawāhia.
The Taupō Volcanic Zone (TVZ) is a volcanic area in the North Island of New Zealand. It has been active for at least the past two million years and is still highly active.
Hazard analysis and critical control points, or HACCP, is a systematic preventive approach to food safety from biological, chemical, and physical hazards in production processes that can cause the finished product to be unsafe and designs measures to reduce these risks to a safe level. In this manner, HACCP attempts to avoid hazards rather than attempting to inspect finished products for the effects of those hazards. The HACCP system can be used at all stages of a food chain, from food production and preparation processes including packaging, distribution, etc. The Food and Drug Administration (FDA) and the United States Department of Agriculture (USDA) require mandatory HACCP programs for juice and meat as an effective approach to food safety and protecting public health. Meat HACCP systems are regulated by the USDA, while seafood and juice are regulated by the FDA. All other food companies in the United States that are required to register with the FDA under the Public Health Security and Bioterrorism Preparedness and Response Act of 2002, as well as firms outside the US that export food to the US, are transitioning to mandatory hazard analysis and risk-based preventive controls (HARPC) plans.
Lake Manapouri is located in the South Island of New Zealand. The lake is situated within the Fiordland National Park and the wider region of Te Wahipounamu South West New Zealand World Heritage Area.
The Waipā River is in the Waikato region of the North Island of New Zealand. The headwaters are in the Rangitoto Range east of Te Kūiti. It flows north for 115 kilometres (71 mi), passing through Ōtorohanga and Pirongia, before flowing into the Waikato River at Ngāruawāhia. It is the Waikato's largest tributary. The Waipā's main tributary is the Puniu River.
Lake Ōkāreka is one of four small lakes lying between Lake Rotorua and Lake Tarawera, in the Bay of Plenty Region of New Zealand's North Island. The others are Lake Rotokakahi, Lake Tikitapu, and Lake Ōkataina. All lie within the Ōkataina Caldera, along its western edge.
The Piako River is a lowland river system that drains into the Firth of Thames on the North Island of New Zealand. Together with the Waihou River, it is one of the two main rivers systems which drains the Hauraki Plains. It is the dominant river system in the Matamata-Piako District, and on its journey it passes through the towns of Morrinsville and Ngatea.
The Chinook salmon is the largest and most valuable species of Pacific salmon. Its common name is derived from the Chinookan peoples. Other vernacular names for the species include king salmon, Quinnat salmon, Tsumen, spring salmon, chrome hog, Blackmouth, and Tyee salmon. The scientific species name is based on the Russian common name chavycha (чавыча).
Lake Apopka is the fourth largest lake in the U.S. state of Florida. It is located 15 miles (24 km) northwest of Orlando, mostly within the bounds of Orange County, although the western part is in Lake County. Fed by a natural spring, rainfall and stormwater runoff, water from Lake Apopka flows through the Apopka-Beauclair Canal and into Lakes Beauclair and Dora. From Lake Dora, water flows into Lake Eustis, then into Lake Griffin and then northward into the Ocklawaha River, which flows into the St. Johns River. Multiple parks or nature trails are present around the lake including Magnolia Park, Lake Apopka Wildlife Drive, Ferndale Preserve, Oakland Nature Preserve, Dr. Bradford Memorial Park, and Newton Park, named for A. B. Newton.
Lake Rotoiti is a lake in the Bay of Plenty region of New Zealand. It is the northwesternmost in a chain of lakes formed within the Okataina Caldera. The lake is close to the northern shore of its more famous neighbour, Lake Rotorua, and is connected to it via the Ohau Channel. It drains to the Kaituna River, which flows into the Bay of Plenty near Maketu.
The Whangamarino River is a lowland river of the Waikato Region of New Zealand's North Island, draining the Whangamarino Wetland and associated farmland catchment. The river converges with the Waikato River just north of Meremere. The main tributary is the Maramarua River, which starts in the Hunua Ranges and forms the northern catchment of the Whangamarino River.
Water pollution in New Zealand is an increasing concern for those who use and care for waterways and for New Zealand regulatory bodies. An increase in population is linked to an increase in water pollution, due to a range of causes such as rural land use, industrial use and urban development. Fresh water quality is under pressure from agriculture, hydropower, urban development, pest invasions and climate change. While pollution from point sources has been reduced, diffuse pollution such as nutrients, pathogens and sediments development and from stormwater in towns is not under control. There are more than 800 water quality monitoring sites around New Zealand that are regularly sampled.
Water pollution in Canterbury, New Zealand has become a major environmental issue, largely due to pollution from agricultural sources, but also industrial and urban sources.
Rotokauri is a semi-rural suburb split between western Hamilton and Waikato District in New Zealand. It is one of the future urban zones of Hamilton, along with Peacocke. The northeastern parts of Rotokauri, within Hamilton, are sometimes called Burbush and Baverstock. Part of Rotokauri was taken into Hamilton with the 10th city extension in November 1989. Until then it had been in the Waipa County Council area.
Water supply and sanitation in New Zealand is provided for most people by infrastructure owned by territorial authorities including city councils in urban areas and district councils in rural areas. As at 2021, there are 67 different asset-owning organisations.
Mangātarere Stream is a small gravel-bed stream in central Wairarapa, New Zealand, that originates in the Tararua Ranges. It is located close to the township of Carterton and is the main tributary to the Waiohine River. The Waiohine flows into the Ruamāhanga River, southeast of Greytown.
Lake Harihari is a dune-dammed lake 10 km south of Kawhia in the Waikato region of New Zealand. Its water quality is the best amongst the Waikato dune lakes. It is ranked eighth in importance in the region. Its quality has been attributed to its remoteness.
Lake Whangape is shallow, supertrophic, lateral and the second largest lake in the lower Waikato River basin in New Zealand. One source said the name translated to 'a large sheet of water', another that it was a chief's name.
Lake Killarney is a small lake in New Zealand's South Island. It is in Tākaka just off State Highway 60. Previously used for swimming, it is now polluted due to nutrient runoff. Efforts are underway to improve water quality.
References
- ↑ "Lake Mangakaware". LAWA. Retrieved 18 August 2024.
- ↑ "Lake Mangakaware". Lakes 380. Retrieved 18 August 2024.
- ↑ "Lake Mangakaware: Improving the quality of inflowing Catchment water" (PDF). waikatoregion. Retrieved 18 August 2024.
- ↑ "Lake Mangakaware" (PDF). waikatobotsoc. Retrieved 18 August 2024.
37°56′01″S175°13′12″E / 37.93361°S 175.22000°E
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