WaterNSW managing inflows as rain forecast persists

WaterNSW managing inflows as rain forecast persists

24 November 2021

WaterNSW is seeking to reduce downstream impacts in key regional valleys by capturing inflows where possible and holding back peak flows into dams already near capacity.

Inflows into WaterNSW dams in the Gwydir and Namoi valleys are falling, along with downstream tributary peaks, providing an opportunity to continue releases before further rain in coming days.

At Copeton Dam (100%) on the Gwydir River releases have been increased to 10 gigalitres per day (GL/day). The dam is receiving 19 GL/day, down from a peak on 22 November of 130 GL/day.

Keepit Dam (>100%) has reduced releases to 20 GL/day, with inflows persisting at 15 GL/day.

Operations at Wyangala Dam (94.6%) on the Lachlan River, Burrendong Dam (126.8%) on the Macquarie River and Burrinjuck Dam (89.6%) on the Murrumbidgee River have created storage capacity to receive inflows.

Blowering Dam (97.4%) releases are under review and could increase, to create storage capacity.

WaterNSW is continuing to monitor conditions and manage airspace releases in line with weather advice from the Bureau of Meteorology and in consultation with regional airspace advisory panels.

ValleyDam % (rising/falling) Inflows GL/day Releases GL/day
Murrumbidgee Burrinjuck 89.6 ↔ 88
Murrumbidgee Blowering 97.4 ↓ 6 7  
Lachlan Wyangala 94.6 ↔46
Macquarie Burrendong 126.8 ↓ 6 11.5
Namoi Keepit 100.6 ↓15 20
Gwydir Copeton   100.1 ↔1910

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96.5
Saturday 27 November
0.7
2,491,620 ML
2,581,850 ML
9,081 ML
1,298 ML
17,603 ML
Saturday 27 November