Ngatu, and Lake Rotoroa. There is a possibility to use these as "window lakes" presenting an extension of the groundwater table ("window lakes" would be affected by groundwater pumping due to the direct hydraulically connection with the aquifer), there is however, little data available on which to base a conclusion. Use of the aquifer for the avocado industry has caused concerns for the public regarding water security for local communities, and the potential environmental impact on the nearby Kaimaumau wetland. References Far North District Tombolos Peninsulas of the Northland Region Kauri gum