Tantangara Dam: Difference between revisions

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The Base Passing Flow releases typically occur during drier weather.
 
A modified ‘flow scaling’ approach used to set SRIF releases to the Snowy River has also been applied to the SMRIF in the Murrumbidgee River (<ref>Williams S. (2014) Strategy for the Snowy Montane Rivers Increased Flows 2014-15. NSW Government, Sydney.</ref>; <ref>Williams S. (2015) Strategy for the Snowy Montane Rivers Increased Flows 2015-16. NSW Government, Sydney.5</ref>; <ref>Williams S. (2016) Strategy for the Snowy Montane Rivers Increased Flows 2016-17. NSW Government, Sydney.</ref>; <ref>Williams S. (2017) Ecological process: the basis for flow based river rehabilitation in the Snowy Montane Rivers. NSW Government, Sydney </ref>). This modified approach uses the recorded flows in a nearby natural catchment (in a year where similar volumes of flow occurred) to set daily releases. For releases to the Murrumbidgee River from Tantangara dam, the initial daily flow targets were set using the 1991-92 flow sequence for the Murrumbidgee River above Tantangara (station No. 410535). Daily targets were then amended to account for operational implementation.
 
The SWIOID 2002 identifies a target of 27GL (i.e. 30% of the Mean Annual Natural Flow- MANF) in a full allocation scenario. Since 2005-06, environmental water has been released to the Upper Murrumbidgee River to repair the condition of the river.