[2017] NZEnvC 187 Hawkes Bay Fish Game Council v Hawkes Bay Regional Council [pdf, 11 MB]
...Ditches or drains supporting raupo, flax or other wetland species (eg. Carex sp., Isolepis sp.), or populations of these species in drains or slumps associated with road reserves or rail corridors. Or iii. Areas of wetland habitat specifically designed, instatled and maintained for any of the following purposes: (a) stock watering (including stock ponds), or (b) water storage for the purposes of fire fighting or irrigation (including old gravel pits), or (c) treatment of animal...