Impervious surfaces—mainly artificial structures such as pavements, roads, sidewalks, driveways and parking lots, as well as industrial areas such as airports, ports and logistics and distribution centres that are covered by water-resistant materials such as asphalt, concrete, brick, stone—including rooftops, were mapped along with other surface types to produce the following categories:• Buildings (Class Name = 0)• Other impervious (driveways, carparks, etc) (Class Name = 2)• Roads (Class Name = 3)Image processing was conducted by Lynker Analytics using machine learning techniques on Auckland Council’s most recent orthophotography—7.5 cm pixel resolution (2017) covering all the region’s urban settlements and beyond; and 50 cm pixel resolution (2010-2012) covering the region’s remaining, predominantly rural areas—to produce two separate (urban and rural) land cover datasets.Land Cover 2017 is the companion dataset to Impervious Surfaces.A copy of the full background report can be obtained from the Regional Planning team in Auckland Council’s Healthy Waters department.
