Queensland Numbered Acts Queensland Numbered Acts(1) An existing dam has, or a proposed dam after its construction will have, the following failure impact rating if a failure impact assessment, accepted by the chief executive under section 349, for the dam, or the proposed dam after its construction, states that the population at risk is--
(a) for a category 1 failure impact rating--2 or more persons and not more than 100 persons;
(b) for a category 2 failure impact rating--more than 100 persons.
(2) In this section--
population at risk means the number of persons, calculated under the failure impact assessment guidelines, whose safety will be at risk if the dam, or the proposed dam after its construction, fails.