New South Wales Consolidated Regulations

WATER SHARING PLAN FOR THE TENTERFIELD CREEK 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 0.2 megalitres per day (hereafter "ML/day"),

Note: The 0.2 ML/day corresponds to the estimated 80 th percentile of all days, and is referred to as the cease to pump on a falling river and the commence to pump on a rising river.

(ii) C class flows greater than 0.2 ML/day and at or less than 3.0 ML/day, and

(iii) D class flows greater than 3.0 ML/day.

(b) For Zone 2:

(i) very low flow class at or less than 2.0 ML/day,

Note: The 2.0 ML/day corresponds to the estimated 75 th percentile of all days, and is referred to as the cease to pump on a falling river and the commence to pump on a rising river.

(ii) C class flows greater than 2.0 ML/day and at or less than 21 ML/day, and

(iii) D class flows greater than 21 ML/day.

(c) For Zone 3:

(i) very low flow class at or less than 1.0 ML/day,

Note: The 1.0 ML/day corresponds to the 75 th percentile of all days, and is referred to as the cease to pump on a falling river and the commence to pump on a rising river.

(ii) C class flows greater than 1.0 ML/day and at or less than 9.0 ML/day, and

(iii) D class flows greater than 9.0 ML/day.

(d) For Zone 4:

(i) very low flow class at or less than 1.0 ML/day,

Note: The 1.0 ML/day corresponds to the estimated 60 th percentile of all days, and is referred to as the cease to pump on a falling river and the commence to pump on a rising river.

(ii) C class flows greater than 1.0 ML/day and at or less than 8.0 ML/day, and

(iii) D class flows greater than 8.0 ML/day.

(e) For Zone 5:

(i) very low flow class at or less than 4.5 ML/day,

Note: The 4.5 ML/day corresponds to the estimated 75 th percentile of all days, and is referred to as the cease to pump on a falling river and the commence to pump on a rising river.

(ii) C class flows greater than 4.5 ML/day and at or less than 124.0 ML/day, and

(iii) D class flows greater than 124.0 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.