Water Plan (Pioneer Valley) 2002
sec.19Performance indicators for environmental flow objectives
Start here
Get a plain-English read of sec.19
Turn the raw legal text into a practical explanation grounded in Water Plan (Pioneer Valley) 2002.
sec.19 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; 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; and mean wet season flow; and for assessing baseflow in subcatchment area 12— daily flow less than 1ML; and daily flow less than 50ML. s 19 amd 2009 SL No. 212 s 22
- (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; 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; 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; and (iii) mean wet season flow; and
- (i) flow regime class; and
- (ii) annual proportional flow deviation; and
- (iii) mean wet season flow; and
- (d) for assessing baseflow in subcatchment area 12— (i) daily flow less than 1ML; and (ii) daily flow less than 50ML.
- (i) daily flow less than 1ML; and
- (ii) daily flow less than 50ML.
- (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; and
- (i) mean annual flow; and
- (ii) 1.5 year daily flow volume; and
- (iii) 5 year daily flow volume; and