Water Plan (Logan Basin) 2007
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, the following— 50% daily flow; 90% daily flow; daily flow less than 1ML; number of periods of no flow of at least 1 month but less than 3 months; number of periods of no flow of at least 3 months but less than 6 months; number of periods of no flow of at least 6 months; and for assessing periods of medium to high flow, the following— mean annual flow; 1.5 year daily flow volume; 5 year daily flow volume; 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, the following— (i) 50% daily flow; (ii) 90% daily flow; (iii) daily flow less than 1ML; (iv) number of periods of no flow of at least 1 month but less than 3 months; (v) number of periods of no flow of at least 3 months but less than 6 months; (vi) number of periods of no flow of at least 6 months; and
- (i) 50% daily flow;
- (ii) 90% daily flow;
- (iii) daily flow less than 1ML;
- (iv) number of periods of no flow of at least 1 month but less than 3 months;
- (v) number of periods of no flow of at least 3 months but less than 6 months;
- (vi) number of periods of no flow of at least 6 months; and
- (b) for assessing periods of medium to high flow, the following— (i) mean annual flow; (ii) 1.5 year daily flow volume; (iii) 5 year daily flow volume; (iv) 20 year daily flow volume; and
- (i) mean annual flow;
- (ii) 1.5 year daily flow volume;
- (iii) 5 year daily flow volume;
- (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;
- (ii) 90% daily flow;
- (iii) daily flow less than 1ML;
- (iv) number of periods of no flow of at least 1 month but less than 3 months;
- (v) number of periods of no flow of at least 3 months but less than 6 months;
- (vi) number of periods of no flow of at least 6 months; and
- (i) mean annual flow;
- (ii) 1.5 year daily flow volume;
- (iii) 5 year daily flow volume;
- (iv) 20 year daily flow volume; and
- (i) flow regime class; and
- (ii) annual proportional flow deviation.