Difference between revisions of "Abbot Bay Catchment"

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The Abbot Bay Catchment is one of 51 sub catchments of the larger [[Burdekin River|Burdekin]] Catchment. The Abbot Bay Catchment covers an area of approximately 1188 square kilometres. This represents less than 1% of the entire Burdekin Catchment.
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{{CategoryPage
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|content=
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<h2>Subcatchments</h2>
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<p>Smaller subcatchments within the Abbot Bay Catchment include: </p>
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<ul class=”lists”>
 +
<li>Elliot River
 +
<li>Saltwater Creek
 +
<li>Splitters Creek
 +
<li>Euri Creek
 +
</ul>
  
==Subcatchments==
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<h2>Topography</h2>
Smaller Catchments within the Abbot Bay Catchment include:
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<p>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</p>
  
* [[Elliot River - Abbot Bay Catchment | Elliot River]]
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<h2>Vegetation</h2>
* [[Saltwater Creek - Abbot Bay Catchment | Saltwater Creek]]
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<h3>Riparian Habitat</h3>
* [[Splitters Creek - Abbot Bay Catchment | Splitters Creek]]
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<p>[[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. </p>
* [[Euri Creek - Abbot Bay Catchment | Euri Creek]]
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==Topography==
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'''iTRARC Scores'''
The major water courses of the Abbot Bay Catchment are the [[Elliot River - Abbot Bay Catchment | Elliot River]] and [[Euri Creek - Abbot Bay Catchment | Euri Creek]]. The [[Elliot River - Abbot Bay Catchment | Elliot River]] stretches from the south of this catchment off the [[Mount Aberdeen National Park | MT Aberdeen National Park]] and Pine Hill (624 metres). The [[Stockyard Creek]] and [[Manning Camp Creek | Manning Camp Creeks]] join the [[Elliot River - Abbot Bay Catchment | Elliot River]] from the south-west in the vicinity of [[Mt View]] (GDA94 MGA Zone 55 593164E 7774580N). [[Butchers Creek - Abbot Bay Catchment | Butchers Creek]] joins the [[Elliot River - Abbot Bay Catchment | Elliot River]] from the East in the vicintiy of [[Glenmore Station]] (GDA94 MGA Zone 55 591654E 7782252N). [[Finley Creek - Abbot Bay Catchment | Finley Creek]] drains off the slopes of [[MT Abbot]](1056 metres) and unnamed feature (568 metres) at (GDA94 MGA Zone 55 584910E 7775273N), into the [[Elliot River - Abbot Bay Catchment | Elliot River]] 8 kilometres south of the [[Bruce Highway]]
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==Vegetation==
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<table style="width:85%">
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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>
 +
</tr>
 +
<tr>
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<td bgcolor="#B0E2FF">'''1970s Score'''</td>
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<td bgcolor="#F5F5F5" align="center">11 (B)</td>
 +
</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>
 +
<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">'''Increase in Potential for Erosion'''</td>
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<td bgcolor="#F5F5F5" align="center">Moderate</td>
 +
</tr>
 +
<tr>
 +
<td bgcolor="#B0E2FF">'''Reasons for Change in Score'''</td>
 +
<td bgcolor="#F5F5F5" align="left">
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* Increased number of gaps in the riparian corridor of headwater streams
 +
* Floodplain clearing
 +
* Increased number of gully/scalds</td>
 +
</tr>
 +
</table>
  
===Riparian Habitat===
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[[TRARC]] (field survey) scores = No [[TRARC]] scores for this subcatchment
The following information is summarized from the ACTFR report: '''Assessing the condition of riparian vegetation in the Burdekin catchment using satellitte imagery and field surveys''' by ''Leo Lymburner and John Dowe. 2006.'' This report can be accessed from the report section below. 
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<p>Reference:[https://drive.google.com/file/d/0B2eYGb5_l-adRjZJWlU3Z19acmM/view?usp=sharing Assessing the condition of Riparian Vegetation in the Burdekin catchment]</p>
  
[[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.
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<h2>Wetlands</h2>
 +
<p>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. </p>
  
[[Abbot Bay Vegetation|more...]]
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<p>Reference: [https://drive.google.com/file/d/0B2eYGb5_l-adSDA3ekItMmt1SVE/view?usp=sharing Assessing the condition of Wetlands in the Burdekin catchment]</p>
  
==Wetlands==
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<p>For more information see [[Abbot Bay Wetlands|Abbot Bay Wetland condition summary]] </p>
The following information is summarized from the ACTFR report: '''Assessing the condition of Wetlands in the Burdekin catchment using existing GIS and field knowledge for CCI''' by ''Mirjam Maughan, Damien Burrows, Barry Butler, Leo Lymburner and George Lukacs. 2006.'' This report can be accessed from the report section below.
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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.
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<h2>Water</h2>
  
[[Abbot Bay Wetlands|Abbot Bay wetland condition summary...]]
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<h3>SedNet Modelling of Water Quality</h3>
 
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==Water ==
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===SedNet Modelling of Water Quality===
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The following statistics are summarized from the CSIRO report: '''Improved SedNet Modelling of Grazng Lands in the Burdekin Catchment''' by Kinsey-Henderson, A., Sherman, B. and Bartley, R. 2007. This report can be accessed from the report section below.
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Model results for the Abbot Bay subcatchment are summarized as follows:
 
Model results for the Abbot Bay subcatchment are summarized as follows:
 
 
*Subcatchment modelled area 838 sq. km.  
 
*Subcatchment modelled area 838 sq. km.  
 
 
*Source contributions: Hillslope = 70%; Gully = 5%; Streambank = 25%  
 
*Source contributions: Hillslope = 70%; Gully = 5%; Streambank = 25%  
 
 
*Area of subcatchment with <50% ground cover: 104 sq. km or 12% of subcatchment  
 
*Area of subcatchment with <50% ground cover: 104 sq. km or 12% of subcatchment  
 
 
*Hillslope sediment supply: 165 kg/ha/yr  
 
*Hillslope sediment supply: 165 kg/ha/yr  
 
 
*Total suspended sediment (flow weighted) supply: 72 kt/yr  
 
*Total suspended sediment (flow weighted) supply: 72 kt/yr  
 
 
*Total suspended supply (flow weighted;normalized to area):828kg/ha/yr
 
*Total suspended supply (flow weighted;normalized to area):828kg/ha/yr
 
 
*Total suspended sediment end-of-subcatchment (flow weighted) yield: 66 kt/yr  
 
*Total suspended sediment end-of-subcatchment (flow weighted) yield: 66 kt/yr  
 
 
*Event Mean Concentration (EMC - flow weighted): 474 mg/L  
 
*Event Mean Concentration (EMC - flow weighted): 474 mg/L  
 
 
*Mean Annual Flow:  139,025 ML.
 
*Mean Annual Flow:  139,025 ML.
  
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.
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<p>Reference: [https://drive.google.com/file/d/0B2eYGb5_l-adYndoMXVOSjM5Ym8/view?usp=sharing Improved SedNet Modelling of Grazing Land in the Burdekin Catchment]</p>
  
===Water Quality Monitoring===
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<p>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.</p>
  
''Water Quality Sampling Sites''
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<h3>Water Quality Monitoring</h3>
* [http://maps.google.com/maps?f=q&hl=en&geocode=&q=-20.01037+148.11607&ie=UTF8&ll=-20.01029,148.116131&spn=0.104521,0.159645&t=h&z=13&iwloc=addr&om=1 Euri Creek - Google Map]
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The [[Water Quality Monitoring | monitoring site]] in the Abbot Bay (Euri Creek) catchment is located at the Bruce Highway and has been sampled by the NQ Dry Tropics Volunteers program for 2 years (2005/06 and 2006/07 wet seasons). The catchment area for this monitoring site is 421 sq km, of which 82.2% is used for grazing.  Suspended sediment concentrations for Euri Creek have been moderate (mean concentration for samples collected of 157 mg/L) compared to other sampling sites located on the coastal plan in the Burdekin Region. The flow-weighted annual load for Euri Creek has been calculated at 12,900 tonnes using the 2 years of monitoring data which is considerably lower the annual load predicted by the SedNet model of 39,400 tonnes.
  
The [[Water Quality Monitoring | monitoring site]] in the Abbot Bay (Euri Creek) catchment is located at the Bruce Highway and has been sampled by the BDTNRM Volunteers program for 2 years (2005/06 and 2006/07 wet seasons). The catchment area for this monitoring site is 421 sq km, of which 82.2% is used for grazing.  Suspended sediment concentrations for Euri Creek have been moderate (mean concentration for samples collected of 157 mg/L) compared to other sampling sites located on the coastal plan in the Burdekin Region.  The flow-weighted annual load for Euri Creek has been calculuted at 12,900 tonnes using the 2 years of monitoring data which is considerably lower the annual load predicted by the SedNet model of 39,400 tonnes.
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<p>Relevant information of [[Water Quality Monitoring]]:</p>
 
+
<ul class=”lists”>
 
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<li>[[Water Quality Monitoring]]
Relevant information of [[Water Quality Monitoring]] in the [[Townsville Coastal|Townsville Catchments Basin]] can be found by following these links:
+
<li>[[Water Quality Monitoring results]]
* [[Water Quality Monitoring]]
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<li>[https://drive.google.com/file/d/0B2eYGb5_l-adVmVhX3pJeklISVU/view?usp=sharing Event-based community water quality monitoring in the Burdekin Dry Tropics Region: 2002-2007. Volume 1]
* [[Water Quality Monitoring results]]
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<li>[https://drive.google.com/file/d/0B2eYGb5_l-adY0RueDNBVVZSYVU/view?usp=sharing Event-based community water quality monitoring in the Burdekin Dry Tropics Region: 2002-2007. Volume 2]
* [http://www.actfr.jcu.edu.au/idc/groups/public/documents/technical_report/jcudev_016590.pdf Event-based community water quality monitoring in the Burdekin Dry Tropics Region: 2002-2007. Volume 1]
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</ul>
* [http://www.actfr.jcu.edu.au/idc/groups/public/documents/technical_report/jcudev_016591.pdf Event-based community water quality monitoring in the Burdekin Dry Tropics Region: 2002-2007. Volume 2]
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===Environmental Uses and Values===
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The following summary of environmental uses and values is based on information extracted from the following  reports: '''Social, Economic, Cultural and Environmental Values of Streams and Wetlands in the Burdekin Dry Tropics Region''' by ''Greiner, R and Hall, N. 2006'' and '''Burdekin Basin Draft Water Resource Plan''' by ''Queensland Dept. of Natural Resources, Mines and Water, 2006''. The Greiner and Hall 2006 report may be accessed from the report section below.
+
 
+
 
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[[Definition of Environmental Values in the Queensland Water Quality Guidelines]]
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+
 
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[[Image:Fish.jpg]] Aquatic Ecosystems:
+
  
 +
<h2>Environmental Uses and Values</h2>
 +
<h3>Aquatic Ecosystems</h3>
  
 
[[Abbot Bay subcatchment draft HEV waters]]
 
[[Abbot Bay subcatchment draft HEV waters]]
  
 
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<h3>Irrigation</h3>
[[Image:Irrigator.jpg]] Irrigation
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Irrigation for horticulture in the eastern fringe of the Abbot Bay catchment.
 
Irrigation for horticulture in the eastern fringe of the Abbot Bay catchment.
  
 
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<h3>Stock Watering</h3>
 
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[[Image:Cow.jpg]] Stock Watering:
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Water supply for production of healthy livestock.
 
Water supply for production of healthy livestock.
  
 
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<h3>Industrial Uses</h3>
 
+
[[Image:Pollution.jpg]]  Industrial Uses:
+
 
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Abbot Point Coal mine.
 
Abbot Point Coal mine.
  
 +
<h3>Cultural and Spiritual</h3>
 +
<p>Custodial use of water resources by Juru traditional owners.</p>
  
 +
References:
 +
*[[Definition of Environmental Values in the Queensland Water Quality Guidelines]] </p>
 +
*[https://drive.google.com/file/d/0B2eYGb5_l-adTzB5bnhqT0lxZTQ/view?usp=sharing Social, Economic, Cultural and Environmental values of streams and wetlands in the Burdekin Dry Tropics region.]
  
[[Image:Feet.jpg]]  Cultural and Spirtual:
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<h3>Land Condition</h3>
  
Custodial use of water resources by Juru traditional owners.
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<p>[[Definition of ABCD land condition framework]]</p>
  
==Landuse==
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<p>No data available for land condition in the Abbot Bay subcatchment. </p>
  
===Mining===
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<h3>Ground Cover</h3>
* [[Abbot Point Bulk Coal Pty Ltd]] (GDA94 MGA Zone 55 613080E 7799611N)
+
  
 +
<p>No data available for [[Ground Cover]] in the Abbot Bay subcatchment. </p>
  
===Grazing Land===
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<h3>Maps</h3>
 
+
====='''Land Condition'''=====
+
 
+
[[Definition of ABCD land condition framework]]
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+
No data available for land condition in the Abbot Bay subcatchment.
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+
====='''Ground Cover'''=====
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No data available for [[Ground Cover]] in the Abbot Bay subcatchment.
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+
==Maps==
+
 
<gallery>
 
<gallery>
image:AbbotBay.jpg|Abbot Bay
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image:AbbotBay.jpg|<center>Abbot Bay</center>
image:LanduseAbbotBay.jpg|Abbot Bay Landuse (focus on Abbot Bay)
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image:LanduseAbbotBay.jpg|<center>Abbot Bay Landuse (focus on Abbot Bay)</center>
image:AbbotBayWet.jpg|Abbot Bay Wetlands
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image:AbbotBayWet.jpg|<center>Abbot Bay Wetlands</center>
image:GoogleAbbotBay.jpg|Abbot Bay Catchment - Google Image
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image:GoogleAbbotBay.jpg|<center>Abbot Bay Catchment - Google Image</center>
image:AbbotBayGeology.jpg|Abbot Bay Geology
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image:AbbotBayGeology.jpg|<center>Abbot Bay Geology</center>
image:Abbot Bay Catchment 250K.jpg|250K Topographic Base
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image:Abbot Bay Catchment 250K.jpg|<center>250K Topographic Base</center>
image:Abbot Bay Catchment hillshade.jpg|Catchment Hillshade
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image:Abbot Bay Catchment hillshade.jpg|<center>Catchment Hillshade</center>
image:Abbot Bay Mindmap.jpeg|Watercourses
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image:Abbot Bay Mindmap.jpeg|<center>Watercourses</center>
image:Abbot Bay Minor Catchments.jpg|Minor Catchments
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image:Abbot Bay Minor Catchments.jpg|<center>Minor Catchments</center>
 
</gallery>
 
</gallery>
  
Please feel free to download the maps in the following formats:
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<h3>Photos</h3>
 
+
* [http://www.actfr.jcu.edu.au/Projects/PDF/AbbotBay.pdf Abbot Bay Map] as *.pdf ([http://www.adobe.com/ap/products/acrobat/readstep2.html requires Acrobat Reader])
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* [http://www.actfr.jcu.edu.au/Projects/PDF/LanduseAbbotBay.pdf Abbot Bay Landuse Map] as *.pdf ([http://www.adobe.com/ap/products/acrobat/readstep2.html requires Acrobat Reader])
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* [http://www.actfr.jcu.edu.au/Projects/PDF/AbbotBayGeology.pdf Abbot Bay Geology Map] as *.pdf ([http://www.adobe.com/ap/products/acrobat/readstep2.html requires Acrobat Reader])
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* [http://www.actfr.jcu.edu.au/Projects/Google/AbbotBay.kmz Catchment Layer] as *.kmz ([http://earth.google.com/ requires Google Earth])
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==Photos==
+
 
<gallery>
 
<gallery>
 
image:AbbotBay1.jpg
 
image:AbbotBay1.jpg
image:AbbotBay2.jpg
 
image:AbbotBay3.jpg
 
 
</gallery>
 
</gallery>
  
==Reports==
+
<h3>References</h3>
* [http://www.actfr.jcu.edu.au/idc/groups/public/documents/technical_report/jcudev_015431.pdf Assessing the condition of Riparian Vegetation in the Burdekin catchment for CCI (2.8 Mb)]
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<ul class="lists">
* [http://www.actfr.jcu.edu.au/idc/groups/public/documents/technical_report/jcudev_015430.pdf Assessing the condition of Wetlands in the Burdekin catchment for CCI (10 Mb)]
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<li> [https://drive.google.com/file/d/0B2eYGb5_l-adRjZJWlU3Z19acmM/view?usp=sharing Assessing the condition of Riparian Vegetation in the Burdekin catchment (2.8 Mb)]
* [http://www.bdtnrm.org.au/cci/monitoring/downloads/Water-quality-issues-in-the-Burdekin-without-appx-bandw.pdf Water Quality Issues in the Burdekin Region (3.8Mb)]
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<li> [https://drive.google.com/file/d/0B2eYGb5_l-adSDA3ekItMmt1SVE/view?usp=sharing Assessing the condition of Wetlands in the Burdekin catchment (10 Mb)]
* [http://www.actfr.jcu.edu.au/idc/groups/public/documents/technical_report/jcudev_015428.pdf Monitoring of sediments and nutrients in the Burdekin Dry Tropics region: 2005-06 wet season (4.3 Mb)]
+
<li> [https://drive.google.com/file/d/0B2eYGb5_l-adY2pLcGZCVW9sWGc/view?usp=sharing Water Quality Issues in the Burdekin Region (3.8Mb)]
* [http://www.actfr.jcu.edu.au/idc/groups/public/documents/technical_report/jcudev_015421.pdf Event based Water Quality Monitoring in the Burdekin Dry Tropics Region: 2004/05 wet season (3.1 Mb)]
+
<li> [https://drive.google.com/file/d/0B2eYGb5_l-adLXk5V2oweUxOVm8/view?usp=sharing Monitoring of sediments and nutrients in the Burdekin Dry Tropics region: 2005-06 wet season (4.3 Mb)]
* [http://www.actfr.jcu.edu.au/idc/groups/public/documents/technical_report/jcudev_015423.pdf A report into the water quality condition of the Burdekin River and surrounds based on the AIMS end-of-catchment sampling program (13.2 Mb)]
+
<li> [https://drive.google.com/file/d/0B2eYGb5_l-adVmVhX3pJeklISVU/view?usp=sharing Event-based community water quality monitoring in the Burdekin Dry Tropics Region: 2002-2007. Volume 1]
* [http://www.actfr.jcu.edu.au/idc/groups/public/documents/technical_report/jcudev_015438.pdf Limnological assessment and benchmarking of key sentinel wetlands in the Burdekin catchment]
+
<li> [https://drive.google.com/file/d/0B2eYGb5_l-adY0RueDNBVVZSYVU/view?usp=sharing Event-based community water quality monitoring in the Burdekin Dry Tropics Region: 2002-2007. Volume 2]
* [http://www.bdtnrm.org.au/cci/monitoring/downloads/Sednet-modelling-Burdekin.pdf Improved SedNet Modelling of Grazing Land in the Burdekin Catchment(812Kb)]
+
<li> [https://drive.google.com/file/d/0B2eYGb5_l-adbFIyTkxRa0VNRFE/view?usp=sharing Event based Water Quality Monitoring in the Burdekin Dry Tropics Region: 2004/05 wet season (3.1 Mb)]
* [http://www.bdtnrm.org.au/cci/targets/downloads/Burdekin-Waterways_UsesValues_Final-Report_July06.pdfSocial, Economic, Cultural and Environmental values of streams and wetlands in the Burdekin Dry Tropics region. (23.5Mb)]
+
<li> [https://drive.google.com/file/d/0B2eYGb5_l-addWtYR2djQmVQVkU/view?usp=sharing A report into the water quality condition of the Burdekin River and surrounds based on the AIMS end-of-catchment sampling program (13.2 Mb)]
* Draft High Ecological Value waters assessment for BDT WQIP
+
<li> [https://drive.google.com/file/d/0B2eYGb5_l-adSzZwYWRVSnUzSm8/view?usp=sharing Limnological assessment and benchmarking of key sentinel wetlands in the Burdekin catchment Part 1]
 
+
<li> [https://drive.google.com/file/d/0B2eYGb5_l-adYUxQTmZKVmxHZkU/view?usp=sharing Limnological assessment and benchmarking of key sentinel wetlands in the Burdekin catchment Part 2]
==Data==
+
<li> [https://drive.google.com/file/d/0B2eYGb5_l-adYndoMXVOSjM5Ym8/view?usp=sharing Improved SedNet Modelling of Grazing Land in the Burdekin Catchment (812Kb)]
 +
<li> [https://drive.google.com/file/d/0B2eYGb5_l-adTzB5bnhqT0lxZTQ/view?usp=sharing Social, Economic, Cultural and Environmental values of streams and wetlands in the Burdekin Dry Tropics region.]
 +
</ul>
  
* [[CQ Remnant Beach Scrub Mapping]]
+
|image=
 +
[[file:Abbot Bay Catchments.jpg|400px]]
 +
}}
  
* [[Region Wide Datasets]]
+
[[Category:Ecosystems]][[Category:Condition]]
* [[Bowen Broken Bogie Activities]]
+
* [[Brigalow Belt North Bioregion Boundary]]
+

Latest revision as of 04:32, 16 June 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.

iTRARC Scores

Catchment Class 1 B
Maximum iTRARC Score 22 (A+)
1970s Score 11 (B)
2004 Score 6 (C)
Reduction in Ecosystem Services Minor
Increase in Potential for Erosion Moderate
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

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

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

SedNet Modelling of Water Quality

Model results for the Abbot Bay subcatchment are summarized as follows:

  • Subcatchment modelled area 838 sq. km.
  • Source contributions: Hillslope = 70%; Gully = 5%; Streambank = 25%
  • Area of subcatchment with <50% ground cover: 104 sq. km or 12% of subcatchment
  • Hillslope sediment supply: 165 kg/ha/yr
  • Total suspended sediment (flow weighted) supply: 72 kt/yr
  • Total suspended supply (flow weighted;normalized to area):828kg/ha/yr
  • Total suspended sediment end-of-subcatchment (flow weighted) yield: 66 kt/yr
  • Event Mean Concentration (EMC - flow weighted): 474 mg/L
  • Mean Annual Flow: 139,025 ML.

Reference: Improved SedNet Modelling of Grazing Land in the Burdekin Catchment

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.

Water Quality Monitoring

The monitoring site in the Abbot Bay (Euri Creek) catchment is located at the Bruce Highway and has been sampled by the NQ Dry Tropics Volunteers program for 2 years (2005/06 and 2006/07 wet seasons). The catchment area for this monitoring site is 421 sq km, of which 82.2% is used for grazing. Suspended sediment concentrations for Euri Creek have been moderate (mean concentration for samples collected of 157 mg/L) compared to other sampling sites located on the coastal plan in the Burdekin Region. The flow-weighted annual load for Euri Creek has been calculated at 12,900 tonnes using the 2 years of monitoring data which is considerably lower the annual load predicted by the SedNet model of 39,400 tonnes.

Relevant information of Water Quality Monitoring:

Environmental Uses and Values

Aquatic Ecosystems

Abbot Bay subcatchment draft HEV waters

Irrigation

Irrigation for horticulture in the eastern fringe of the Abbot Bay catchment.

Stock Watering

Water supply for production of healthy livestock.

Industrial Uses

Abbot Point Coal mine.

Cultural and Spiritual

Custodial use of water resources by Juru traditional owners.

References:

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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