There are four major rivers scheme targeted rating areas (Kaituna Catchment Control, Rangitāiki-Tarawera, Whakatāne-Tauranga and Waioeka-Otara) and one major drainage scheme covering the Rangitāiki Plains area.
There are also 39 minor drainage and pumping schemes on the Rangitāiki Plains and Ōpōtiki area. In the Rangitāiki Plains area, it is common for properties to contribute to three separate schemes (i.e. the Rangitāiki-Tarawera Rivers Scheme, the Rangitāiki Drainage Scheme and one of the minor pumping schemes).
Each scheme is a different size and has a different number of ratepayers.