The NSW Department of Climate Change, Energy, the Environment and Water (DCCEEW) has issued a rising river alert for the Snowy River between Jindabyne Dam and Dalgety in southern NSW for tomorrow, November 21.
The river will rise due to the last high-flow event in a series of eight planned high-flow environmental releases from Jindabyne Dam via the spillway to the Snowy River during 2024.
A daily flow volume of 2410 megalitres will be released over 24 hours from Jindabyne Dam from midnight (00:00am) on Thursday night.
The release will include a peak flow rate from 8am to 4pm equivalent to 3837 megalitres per day for the eight-hour period.
The flow rate will drop to a target of 751 megalitres per day on Friday, November 22.
The river level at Dalgety is expected to rise by approximately 0.4 m.
These levels do not include the effect of rainfall or wet conditions in the catchment, which may increase flow rates and water depths.
The environmental benefits from this release are expected to be greatest between the dam wall and the junction with the Delegate River.
However, the flow will be noticeable further down into Victoria.
Natural tributary inflows will also contribute to water levels as the release moves down the Snowy River.
Water released from Jindabyne Dam may take approximately six to 10 hours to reach Dalgety Weir at this flow rate and around three to four days to arrive at Orbost in Victoria, subject to catchment conditions.
Landholders downstream of Jindabyne Dam are advised to take all necessary precautions with stock, fencing and property in proximity to the river.
As the release flows through the system people should refrain from entering or crossing swollen waterways.
Conditions will be closely monitored in the lead up to the release. Planned flows may be modified or cancelled subject to weather, environmental or operational conditions nearer to the release.
