Day 14, Wangaratta to Sydney

Got up this morning to thunder and lightning in Wangaratta. Not good prospects for aerial surveying today. Thankfully the storm was small and had gone through by the time we needed to go flying.

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The Ovens River, aerial waterbird survey, 2025

Photo: The Ovens River


Our plane after the thunderstorm passed through

Survey details

  • Calendar plane icon
    Date

    Friday 17th October 2025

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    Author

    Richard Kingsford

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    Project
  • Style three pin binoculars icon
    Observers

    Richard Kingsford (UNSW), Paul Wainwright (SA DEW)

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    Pilot

    Thomas Clark

We started surveying along the King River, where there were only a few Wood Ducks. 
Then it was over to the Ovens River, without any dams upstream, it has many small lagoons.
From here it was on to the Keiwa River.
The Ovens and Kiewa Rivers in Victoria run through largely cleared farming land but there are still many of the original parts of the floodplain holding water. These small lagoons were where we saw most of the waterbirds with small flocks of Wood Ducks and Black Duck. There were also flocks of up to fifty Straw-necked Ibis, particularly on the Kiewa River.
We then flew to refuel in Albury.
From here, we flew over Hume Dam on the River Murray.
Hume Dam wall, releasing water to the River Murray, aerial waterbird survey, 2025
Hume Dam on the River Murray, aerial waterbird survey, 2025

Hume Dam wall, releasing water to the River Murray.

Hume Dam is an extensive river regulation structure on the River Murray.

We then headed south along the Mitta Mitta River. This is now heavily impacted with water stored behind Dartmouth Dam upstream. The water coming from the bottom of the dam is freezing, much colder than normal temperatures. This affects native animals, including platypus which are in trouble in this river. 
Water was primarily confined to the main channel of the Mitta Mitta River, as it flowed through the woodlands. There were only a few Wood Ducks and some Black Ducks.
There are two river regulation structures on the Mitta Mitta River, including this dam below Dartmouth Dam.
This dam had some Black Duck, Wood Duck and two Black Swans. 
We flew up the Mitta Mitta River and over the massive Dartmouth Dam wall, which holds back large amounts of water. 
Dartmouth Dam wall, aerial waterbird survey, 2025
Dartmouth Dam with low water levels, aerial waterbird survey, 2025
Snowy Mountains, aerial waterbird survey, 2025
Lake Eucumbene, aerial waterbird survey, 2025

Dartmouth Dam covers an huge expanse of water but we did not see a waterbird because it is too deep.

The water levels were down (currently about 72% of volume*), exposing the dead trees around the edge of the dam, ‘drowned’ by the water.

From here it was over the Snowy Mountains

and over the massive Lake Eucumbene, one of the dams of the Snowy Mountains Hydroelectricity Scheme.

We have now completed the second of five scheduled legs of the survey for 2025 and today we finish off back in Bankstown.

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