Ngatamariki
The Ngatamariki Geothermal System is a highly dynamic area and since 1995 some springs have formed, others have dried up, and there has been a hydrothermal eruption.
Natural features
- Two large alkaline-chloride pools surrounded by bubbling acidic pools and numerous springs and pools.
- There are six areas of sinter-depositing springs.
- One spring has dense brilliant white calcite sinter 2m wide, for 5m along its outflow.
- In late 1998, a new geyser appeared at Ngatamariki after a bank collapsed and blocked a natural upwelling of geothermal fluid.
- Some thermal ferns are present.
Condition
Ngatamariki is classified as a Development Geothermal System by Environment Waikato.
Currently, the site is in a good condition. However, there are unstable banks near several of the springs, which may collapse. Future logging of the nearby pine plantation could damage the sinter terraces.
