Difference between revisions of "Abbot Bay Catchment"

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<p>Reference:[http://wiki.nqdrytropics.com.au/images/e/e9/Assessing_the_condition_of_Riparian_Vegetation_in_the_Burdekin_catchment.pdf Assessing the condition of Riparian Vegetation in the Burdekin catchment]</p>
 
<p>Reference:[http://wiki.nqdrytropics.com.au/images/e/e9/Assessing_the_condition_of_Riparian_Vegetation_in_the_Burdekin_catchment.pdf Assessing the condition of Riparian Vegetation in the Burdekin catchment]</p>
  
<p>For more information see [[Abbot Bay Vegetation |Abbot Bay riparian habitat condition summary]]</p>
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'''[[iTRARC]] Scores'''
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<table style="width:75%">
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<tr>
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<td bgcolor="#B0E2FF">'''[[Catchment Class]]'''</td>
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<td bgcolor="#F5F5F5" align="center">1 B</td>
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</tr>
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<tr>
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<td bgcolor="#B0E2FF">'''Maximum iTRARC Score'''</td>
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<td bgcolor="#F5F5F5" align="center">22 (A+)</td>
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</tr>
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<tr>
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<td bgcolor="#B0E2FF">'''1970s Score'''</td>
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<td bgcolor="#F5F5F5" align="center">11 (B)</td>
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</tr>
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<tr>
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<td bgcolor="#B0E2FF">'''2004 Score'''</td>
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<td bgcolor="#F5F5F5" align="center">6 (C)</td>
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</tr>
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<tr>
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<td bgcolor="#B0E2FF">'''Reduction in Ecosystem Services'''</td>
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<td bgcolor="#F5F5F5" align="center">Minor</td>
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</tr>
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<tr>
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<td bgcolor="#B0E2FF">'''Reasons for Change in Score'''</td>
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<td bgcolor="#F5F5F5" align="left">
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* Increased number of gaps in the riparian corridor of headwater streams
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* Floodplain clearing
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* Increased number of gully/scalds</td>
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</tr>
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</table>
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[[TRARC]] (field survey) scores = No [[TRARC]] scores for this subcatchment
  
 
<h2>Wetlands</h2>
 
<h2>Wetlands</h2>

Revision as of 23:29, 17 February 2015


Subcatchments

Smaller subcatchments within the Abbot Bay Catchment include:

  • Elliot River
  • Saltwater Creek
  • Splitters Creek
  • Euri Creek

Topography

The major water courses of the Abbot Bay Catchment are the Elliot River and Euri Creek. The Elliot River stretches from the south of this catchment off the MT Aberdeen National Park and Pine Hill (624 metres). The Stockyard Creek and Manning Camp Creek join the Elliot River from the south-west in the vicinity of Mt View. Butchers Creek joins the Elliot River from the East in the vicinity of Glenmore Station. Finley Creek drains off the slopes of Mt Abbot (1056 metres) and unnamed feature (568 metres), into the Elliot River 8 kilometres south of the Bruce Highway

Vegetation

Riparian Habitat

iTRARC analysis of Riparian Habitat indicates that the catchment condition has decreased since the 1970s primarily due to floodplain clearing and an increase in gullying/scalding within the catchment.

Reference:Assessing the condition of Riparian Vegetation in the Burdekin catchment

iTRARC Scores

Catchment Class 1 B
Maximum iTRARC Score 22 (A+)
1970s Score 11 (B)
2004 Score 6 (C)
Reduction in Ecosystem Services Minor
Reasons for Change in Score
  • Increased number of gaps in the riparian corridor of headwater streams
  • Floodplain clearing
  • Increased number of gully/scalds

TRARC (field survey) scores = No TRARC scores for this subcatchment

Wetlands

The creek systems of this sub-division are ephemeral, only running for short periods after significant rainfall. The coastal freshwater wetlands are also mostly ephemeral or seasonal. Very little is known about these wetlands ecologically, and any permanent waterholes within the creeks are likely small in size and very vulnerable to disturbance. The Directory of Important Wetlands in Australia listing for this area is predominantly based on marine and estuarine wetlands. The freshwater fish fauna of the Don River was surveyed by Hogan and Vallance (1998) in relation to studies examining the possibility of building a water storage on the river. They found that freshwater fish diversity was limited, this probably being attributable to the ephemeral nature of the streams. This area supports a significant horticultural industry, based largely on groundwater extraction. It has and is still being examined for further irrigation development via a channel/pipeline from the Burdekin River. The potential impacts of such development require significant examination but Butler and Lukacs (1998) outlined some issues identified during a preliminary overview of the areas wetlands. Overall, the freshwater wetlands of the area are poorly known, but due to the types of developments that dominate the region (mostly cattle grazing) the departure from natural is considered to be relatively minor.

Reference: Assessing the condition of Wetlands in the Burdekin catchment

For more information see Abbot Bay Wetland condition summary

Water

Abbot Bay is one of the smaller of the Burdekin subcatchments (<1000 sq.km). Hillslope erosion is believed to be the major source of sediment and particulate nutrients influencing water quality within this subcatchment. Loss of sediment and associated particulate nutrients from hillslopes (supply) is considered to be relatively low at 165 kg/ha/yr compared to other subcatchments within the greater Burdekin catchment. The proportion of land with less than 50% ground cover is also relatively low at 12%. The moderate concentrations of sediments are a consequence of the low rainfall and thus, low mean annual flow within this system.

For more information see the Water Quality Information

Land Condition

Definition of ABCD land condition framework

No data available for land condition in the Abbot Bay subcatchment.

Ground Cover

No data available for Ground Cover in the Abbot Bay subcatchment.

Maps

Photos

References

Abbot Bay Catchments.jpg

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