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The Clutha Valley Development Commission
The Clutha Valley Development Commission was set up to evaluate potential sites, and after drilling test tunnels in the Cromwell Gorge, advised against interfering with known landslide areas which were pronounced highly unstable. -
The Clutha Valley Advisory Committee,
The Clutha Valley Advisory Committee, set up by the National Government, advised against the high dam (Scheme F), preferring the low dam option (Scheme H) which would not flood Cromwell, Lowburn, the Cromwell Gorge Highway, and cause landslide issues. -
Ministry of Works' bulldozers moved onto the site
Ministry of Works' bulldozers moved onto the site and began work, before a Water Right had been obtained and before an environmental impact report. -
The Government applied for a Water Right,
The Government applied for a Water Right, and was granted one for the low dam (Scheme H), because the low dam would be less affected by known landslide issues. However, work continued on the high dam (Scheme F). -
It was realized that there was an over production of electricity and that the dam,
It was realized that there was an over production of electricity and that the dam, especially Scheme F, was not required. Construction continued mainly to keep the work force employed. -
The Government put the Clyde dam project out to tender.
The Government put the Clyde dam project out to tender. Seven tenders were received. The Ministry of Works originally tendered at $156.4 million, later revising this to $117.3 million. -
Workers discovered a faultline directly under the dam and spillways.
Workers discovered a faultline directly under the dam and spillways.Vast amounts of slurry concrete were pumped into tunnels across the fault called “shear pins” to supposedly lock the fault, even though the fault was 12-15kms deep and such “dental concrete” would be instantly broken in a large earthquake. -
An intense investigation began into landslide issues
An intense investigation began into landslide issues, involving up to 40 geologists, revealing large numbers of highly permeable loess underlying large areas of broken rock slides, throughout the gorge. -
Competed
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Offical opening