WaterNSW advises landholders to monitor river heights

WaterNSW advises landholders to monitor river heights

17 June 2022

WaterNSW is advising landholders to be alert for river height fluctuations as a result of releases from Blowering Dam in the coming days and weeks.

With the Bureau of Meteorology (BoM) forecasting a higher likelihood of wet weather ahead, the dam catchment already saturated and the storage also receiving inflow from electricity generation upstream, a future spill cannot be discounted.

To manage storage levels in recent months WaterNSW has released large volumes of water from the dam, which is currently approximately 99.2% of capacity and releasing 7000 megalitres per day (ML/day).

In the past month WaterNSW has steadily released more than 260,000 megalitres from the dam to manage storage levels and accommodate inflow from power generation activity and rainfall.

Operational releases from Blowering are currently capped by channel capacity rule constraints to not exceed a total flow rate of 9300 ML/day at Tumut, including downstream tributary inflows.

Over the past 12 months the La Nina weather pattern has generated more than 1800 gigalitres (GL) of inflow into the dam, which holds 1630 GL when it is 100%.

Landholders are advised to monitor release rates and river impacts: ·

Agency

Information

Website

Bureau of Meteorology (BOM)

Weather forecasts and warnings

BOM

NSW State Emergency Service (SES)

Flooding and severe weather warnings and advice

NSW SES

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