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The long walk - assessing stream health in Waitakere
https://niwa.co.nz/freshwater/freshwater-update/freshwater-update-33-may-2010/the-long-walk-assessing-stream-health-in-waitakere
Water quality maps and information, April to June 2012
https://niwa.co.nz/freshwater-and-estuaries/freshwater-and-estuaries-update/freshwater/update/54/water-quality-maps-and-information-april-to-june
Freshwater Update 54, July 2012
https://niwa.co.nz/freshwater-and-estuaries/freshwater-and-estuaries-update/freshwater/update/54