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153A: Meaning of earthquake-prone dam and flood-prone dam
or “Explains how dams are classified as risky in big earthquakes or floods based on their size and chance of breaking”

You could also call this:

“Rules for unsafe dams in special areas still apply to actions taken before the area was made special”

If you have a dam that’s considered dangerous and it’s in an area that has been specially marked under subpart 6B, some rules still apply. These rules are about things that happened before the area was marked. For example, if someone took action to make the dam safe, gave a notice about the dam’s danger, or did work on the dam because of a notice, those things still count. Also, if someone used a special document called a warrant to take action on the dam, that still matters too. The rules about dangerous dams (sections 153 to 162) only keep working for these specific situations after the area has been marked.

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Next up: 153B: Owner must notify regional authority of dangerous dam

or “If you think your dam might be dangerous, you must tell the local authorities right away.”

Part 2 Building
Safety of dams: Dangerous dams

153AABuildings in areas designated under subpart 6B

  1. If a building located in an area that has been designated under subpart 6B is a dangerous dam, sections 153 to 162 continue to apply to the dam after the designation only for the purpose of—

  2. an action taken in relation to the dam under section 154(1)(a) or (b) before the designation comes into force:
    1. a notice given in relation to the dam under section 154(1)(c), or work carried out in accordance with the notice or under section 156, before the designation comes into force:
      1. an action taken in relation to the dam under a warrant issued under section 157.
        Notes
        • Section 153AA: inserted, on , by section 14 of the Building Amendment Act 2019 (2019 No 27).