New South Wales Consolidated Regulations

WATER SHARING PLAN FOR THE PHILLIPS CREEK, MOOKI RIVER, QUIRINDI CREEK AND WARRAH CREEK WATER SOURCES 2003 - REG 17

17 Flow classes

(1) The following flow classes are established in the Phillips Creek Water Source as the basis for sharing of daily flows:

(a) very low flow class at or less than 2 megalitres per day (hereafter "ML/day"),

Note: The 2 ML/day corresponds to the estimated 45 th percentile of flows for all days of the year, and is referred to as the cease to pump on a falling river and the commence to pump on a rising river.

(b) C class flows greater than 2 ML/day and at or less than 63 ML/day, and

(c) D class flows greater than 63 ML/day.

(2) The following flow classes are established in the Mooki River Water Source as the basis for sharing of daily flows:

(a) very low flow class at or less than 100 ML/day on a rising river and at or less than 50 ML/day on a falling river, as measured at the Mooki River at Breeza and protected through to the end of the system,

Note: The 100 ML/day corresponds to the estimated 18 th percentile of flows for all days of the year, and is referred to as the cease to pump on a rising river and the 50 ML/day is referred to as the commence to pump on a falling.

(b) C class flows greater than 100 ML/day on a rising river and 50ML/day on a falling river, and at or less that 1,000 ML/day,

(c) D class:

(i) flows greater than 1,000 ML/day and at or less than 3,000 ML/day at the Mooki River at Breeza for all access licences in the Mooki River Water Source, or

(ii) for all access licences only nominating works downstream of the Werris Creek inflow, flows greater than 1,000 ML/day and at or less than 3,000 ML/day at Mooki River at Ruvigne, if flows at Mooki River at Breeza are less than 50 ML/day, and

(d) E class:

(i) flows greater than 3,000 ML/day at Mooki River at Breeza for all access licences in the Mooki River Water Source, or

(ii) for all access licences only nominating works downstream of the Werris Creek inflow, flows greater than 3,000 ML/day at Mooki River at Ruvigne, if flows at Mooki River at Breeza are less than 50 ML/day.

(3) The following flow classes are established in the Quirindi Creek Water Source as the basis for sharing of daily flows:

(a) very low flow class at or less than 2 ML/day,

Note: The 2 ML/day corresponds to the estimated 50 th percentile of flows for all days of the year, and is referred to as the cease to pump on a falling river and the commence to pump on a rising river.

(b) C class flows greater than 2 ML/day and at or less than 100 ML/day, and

(c) D class flows greater than 100 ML/day.

(4) The following flow classes are established in the Warrah Creek Water Source as the basis for sharing of daily flows:

(a) very low flow class at or less than 4 ML/day,

Note: The 4 ML/day corresponds to the estimated 50 th percentile and is referred to as the cease to pump on a falling river and the commence to pump on a rising river.

(b) C class flows greater than 4 ML/day and at or less than 185 ML/day, and

(c) D class flows greater than 185 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.