New South Wales Consolidated Regulations

WATER SHARING PLAN FOR THE COMMISSIONERS WATERS WATER SOURCE 2003 - REG 17

17 Flow classes

This Plan establishes the following flow classes as the basis for sharing of daily flows:

(a) For Zone 1:

(i) very low flow class at or less than 1 megalitres per day (hereafter "ML/day"),

Note: The 1 ML/day in subclause (i) corresponds to the estimated 85 th percentile of all days in December, and is referred to as the cease to pump on a falling river and the commence to pump on a rising river.

(ii) combined A and B class flows greater than 1 ML/day and at or less than 9 ML/day, and

(iii) C class flows greater than 9 ML/day.

(b) For Zone 2:

(i) very low flow class at or less than 1 ML/day, or

(ii) only while Armidale water treatment plant discharges flushing effluent into Dumaresq Creek, very low flow class at or less than visible flow applicable to those licences listed in Schedule 5, at a location defined on each of these licences, and

(iii) combined A and B class flows greater than 1 ML/day and at or less than 9 ML/day, and

(iv) C class flows greater than 9 ML/day.

Note: The flow classes have been determined based on flow information that inherently includes seasonal effects as well as evaporation and seepage losses.