New South Wales Consolidated Regulations

WATER SHARING PLAN FOR THE MACQUARIE AND CUDGEGONG REGULATED RIVERS WATER SOURCE 2003 - REG 59

59 Replenishment flows

(1) The following replenishment flows shall be made when required and when water is available from uncontrolled flows:

(a) up to 10,000 ML/yr to the Gum Cowal/Terrigal system,

(b) up 4,000 ML/yr to Crooked Creek below “Mumblebone”,

(c) up to 1,000 ML/yr to the Bogan River, from Nyngan to the Gunningbar Creek confluence,

(d) up to 1,000 ML/yr to Beleringar Creek, downstream of Albert Priest Canal,

(e) up to 1,500 ML/yr to Reddenville Break, and

(f) up to 5,000 ML/yr to Beleringar Creek.

Note: The replenishment requirements may vary considerably from year to year due to the seasonal conditions. The volumes in subclause (1) are what is necessary to replenish the entire river length in dry antecedent conditions.

(2) The following replenishment flows may be made available when required:

(a) up to 15,000 ML/yr to Marra Creek, from its offtake, downstream to its junction with the Barwon River, and

(b) up to 15,000 ML/yr to the lower Bogan River, downstream of its junction with Gunningbar Creek to its junction with the Barwon River.

(3) Sufficient volumes of water shall be set aside from assured inflows to this water source and reserves held in Windamere Dam and Burrendong Dam water storages to provide for subclause (2).

(4) A replenishment flow of up to 50 ML/day shall be provided below the Macquarie Marshes, from “Miltara” to the Barwon River, at least twice each water year.

(5) Whenever possible, inflows entering the water source from tributary streams downstream of Burrendong Dam shall be used to provide replenishment flows required under subclause (2).

Note: The Northern By-pass Channel may be used to provide the flows under subclause (4), supplementing natural flows through the marshes to maintain the target flow.

Note: In most years, flows through the Macquarie Marshes will provide a continuous water supply at “Miltara”.