Yabba Falls: Top Plunge with Annette's Cascades above

Selected for Google Maps and Google Earth

With a discharge (Q) of 290ML during the day of this photo, and more than 400ML the previous day, Yabba Falls is quite a spectacle. Due to difficult access, these falls are not much known. This is one of the first published photographs of Yabba Falls. Seen here is the top plunge only, but the total fall of c500ft/165M includes a series of drops beginning with the vertical plunge into the plunge pool, rapids, chute (2nd falls) and cascades. Yabba Creek rises on the Conondale/Jimna Ranges and descends through forested areas flowing NNW towards the South Burnett catchment at first. After flowing past the forestry township of Jimna it begins to meander through a granite area that has been cleared for cattle grazing. At Old Yabba Station, this upper section of Yabba Creek then turns at right angles into hard metamorphic rocks and drops over Yabba Falls and heads towards the Mary River. Yabba Falls therefore represents the point at which the Yabba's headwaters were captured from the Burnett Catchment. Such stream captures are significant in the zoological history of the Mary River ecosystem, for the Yabba/Mary is home to the (now endangered) Mary River Cod, a species very closely related to the cod of the inland rivers of the Murray-Darling catchment.

Let me addend the following (which I have subsequently stumbled upon which supports my thesis above) from Wikipedia:

Australia provides a particularly fascinating series of examples of freshwater fish species and distributions resulting from river capture events. The formerly massive Great Dividing Range runs the length of the eastern coastline of Australia and has isolated native freshwater fish populations east and west of the range for millions of years. In the last two million years erosion has reduced the Great Dividing Range to a critical point where west-to-east river capture events have been possible. A number of native fish species that originated in the Murray-Darling river system to the west are (or were) found naturally occurring in a number of coastal systems spanning almost the entire length of the range.

None of the river capture events that allowed native fish of the Murray-Darling system to cross into and colonise these East Coast river systems seem to have formed permanent linkages. The colonising Murray-Darling fish in these East Coast river systems have therefore become isolated from their parent species, and due to isolation, the founder effect, genetic drift and natural selection, have become separate species (see allopatric speciation).

Examples include:

_Golden perch (Dawson-Fitzroy river system, central Queensland)._
_Eel-tailed catfish (several rivers, northern New South Wales) (However, note recent genetic research which now indicates eel-tailed catfish colonised east coast drainages in multiple colonisation events relatively recently (by evolutionary standards) and may subsequently have colonised the Murray-Darling system via an east-to-west river capture event, contrary to usual west-to-east capture events listed here.)_
_Macquarie perch (Hawkesbury-Nepean rivers, Shoalhaven River, southern New South Wales)._
_River blackfish (multiple rivers, Victoria)._
_Murray cod, whose eastern species/subspecies are:_
    _Eastern freshwater cod (Clarence River system, northern New South Wales. It was also found in the Richmond River system in New South Wales but that population is now extinct.)_
    _Brisbane River cod (Brisbane River system, southern Queensland. That population is now extinct, and its exact taxonomic status is not known.)_
    _**The Mary River cod (Yabba Creek and the Mary River, southern Queensland.)**_
_The mountain galaxias species complex (multiple rivers, southern Queensland, New South Wales, Victoria)._

I. Stehbens MSc BA FRGS

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Comments (7)

Geerten on March 4, 2012

beauty!

Ian Stehbens on March 4, 2012

Great joy for me, Geerten. Glad you like it.

Ian

diego_cue on March 7, 2012

what a fantastic view Ian! Saludos, diego

Ian Stehbens on March 13, 2012

I am very pleased to have had the opportunity, at last, to be able to photograph these falls from the air, and to share them with you Diego. They have been part of my life from a very early age, and my first photograph of them was taken when I was a boy as I lay flat on the ground looking down into the gorge.

Later on I tried approaching them by hiking up into the gorge but was beaten by the series of small falls or cascades in the next gorge around the corner.

So it is with a real joy that I have this photo now, with the sun shining through a small window in the clouds - just for me, it seemed!

Kind regards,

Ian

Ian Stehbens on March 23, 2012

Through posting this photo of Yabba Falls, I have at last been shown two other photos of the Yabba Falls. Both are historical images in sepia.

One is of this plunge section taken c.1900 and looking up from the beside the plunge pool. A copy of it is held by the State Library of Victoria.

The second image views the entire falls (this top plunge section, the rapids, chute and bottom cascades) from a high vantage point east of the falls. It was photographed by the owners of Yabba Station in 1913, and is held by the descendant family.

Ian Stehbens on April 10, 2012

This photograph was taken on Wednesday morning, March 29, 2012 two days after a small flood peak had passed. The rainfall recordings for the catchment for that week are provided by the Bureau of Meteorology.

Normally the water at the top of the plunge forms two separate streams but in this image those streams had coalesced.

Ian Stehbens on April 11, 2012

Annette's Cascades that lead from the Homestead Pool to the Top Plunge of Yabba Falls were named after the younger daughter of Arthur and Kathleen Bassingthwaighte, owners of Yabba Station for many years. The homestead in which the Bassingthwaighte family lived is located only 500M above the falls.

Annette is now the current owner of "Old Yabba Station", the northern section of the former Yabba Station.

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Photo details

  • Uploaded on March 3, 2012
  • © All Rights Reserved
    by Ian Stehbens

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