Subsidence around Wairākei geothermal field
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Subsidence around Wairākei geothermal field
Extracting steam at Wairākei has caused the ground to subside. This map shows the total subsidence, measured over almost 50 years, from 1953 to 2001. The contour interval is 1 metre. The greatest subsidence, up to 14 metres, is in the immediate area of the borefield. A larger area has subsided by over a metre, indicating that extraction of geothermal fluid may affect a large area in the long term.
Source: Contact Energy
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