Water Plan (Gold Coast) 2006
sec.12Performance indicators for environmental flow objectives
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sec.12 Performance indicators for environmental flow objectives
The performance indicators for the environmental flow objectives are— for assessing periods of low flow— 50% daily flow; and 90% daily flow; and daily flow less than 1ML; and number of periods of no flow of at least 1 month but less than 3 months; and number of periods of no flow of at least 3 months but less than 6 months; and number of periods of no flow of at least 6 months; and for assessing periods of medium to high flow— mean annual flow; and 1.5 year daily flow volume; and 5 year daily flow volume; and 20 year daily flow volume; and for assessing seasonal flow patterns— flow regime class; and annual proportional flow deviation.
- (a) for assessing periods of low flow— (i) 50% daily flow; and (ii) 90% daily flow; and (iii) daily flow less than 1ML; and (iv) number of periods of no flow of at least 1 month but less than 3 months; and (v) number of periods of no flow of at least 3 months but less than 6 months; and (vi) number of periods of no flow of at least 6 months; and
- (i) 50% daily flow; and
- (ii) 90% daily flow; and
- (iii) daily flow less than 1ML; and
- (iv) number of periods of no flow of at least 1 month but less than 3 months; and
- (v) number of periods of no flow of at least 3 months but less than 6 months; and
- (vi) number of periods of no flow of at least 6 months; and
- (b) for assessing periods of medium to high flow— (i) mean annual flow; and (ii) 1.5 year daily flow volume; and (iii) 5 year daily flow volume; and (iv) 20 year daily flow volume; and
- (i) mean annual flow; and
- (ii) 1.5 year daily flow volume; and
- (iii) 5 year daily flow volume; and
- (iv) 20 year daily flow volume; and
- (c) for assessing seasonal flow patterns— (i) flow regime class; and (ii) annual proportional flow deviation.
- (i) flow regime class; and
- (ii) annual proportional flow deviation.
- (i) 50% daily flow; and
- (ii) 90% daily flow; and
- (iii) daily flow less than 1ML; and
- (iv) number of periods of no flow of at least 1 month but less than 3 months; and
- (v) number of periods of no flow of at least 3 months but less than 6 months; and
- (vi) number of periods of no flow of at least 6 months; and
- (i) mean annual flow; and
- (ii) 1.5 year daily flow volume; and
- (iii) 5 year daily flow volume; and
- (iv) 20 year daily flow volume; and
- (i) flow regime class; and