Snowy Hydro Limited has been fined $60,000 after sediment impacted water entered Talbingo Reservoir and the Yarrangobilly River in separate incidents in May and July 2025.

The NSW Environment Protection Authority (EPA) found that water carrying sediment from stockpiles of tunnel boring material flowed into a waterway and Talbingo Reservoir after a sediment basin and silt curtain failed. About 18,000 litres of sediment water was later removed.

In July, sediment impacted water entered the Yarrangobilly River when an obstructed dirty water drain diverted polluted water around a sediment basin for a period of around 14 hours during rainfall. The drain had not been included in a pre-rainfall inspection, and sampling following the event showed elevated turbidity downstream of the discharge.

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