Glenmore Creek

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Subcatchments

Smaller subcatchments within the Glenmore Creek Catchment include:

  • Sandalwood Creek
  • Bowen River
  • Glenmore Creek
  • Ten Mile Creek
  • Parrot Creek

Vegetation

Riparian Habitat

iTRARC analysis of Riparian Habitat indicates that this subcatchment was in relatively poor (C+) condition in the 1970s and the condition has worsened to very poor (D) in 2004. This is due to an increase in the amount of gullying and scalding and an increase in the number of gaps in the riparian zone. The field survey scores support this assessment with two very poor sites, one poor, and one good.

iTRARC Scores

Catchment Class 2 D
Maximum iTRARC Score 18 (A)
1970s Score 6 (C+)
2004 Score 0 (D)
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 tributary streams and the main channel
  • Increased number of low cover hill slopes next the to channel network
  • Large increase in the amount of gullying/scalding

TRARC (field survey) scores

Survey SiteScoreRegenerationWeeds
Parrot Ck49.1 (D)0 (D)1 sp: 10% cover (B)
Ten Mile Ck [#1]49.9 (D)2 (B)0 (A)
Ten Mile Ck [#2]75.8 (B)2 (B)0 (A)
Average 58.3 (C)

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

Wetlands

This sub-division is poorly known ecologically, hence the poor degree of confidence. The creeks are generally dry with limited habitat availability, though some waterholes are present in Parrot Creek and this creek was rated highly by Blackman et al. (2002). Condition is not well known though thought to be similar to adjoining sub-divisions that are also dominated by grazing as their land-use.

Reference: Assessing the condition of Wetlands in the Burdekin catchment

For more information see Glenmore Creek wetland condition

Water

SedNet Modelling of Water Quality

Model results for the Glenmore Creek subcatchment are summarized as follows:

  • Subcatchment modelled area: 1,567 sq. km.
  • Source contributions: Hillslope = 41%; Gully = 50%; Streambank = 2%
  • Area of subcatchment with <50% ground cover: 332 sq. km or 21% of subcatchment
  • Hillslope sediment supply: 258 kg/ha/yr
  • Total suspended sediment (flow weighted) supply: 92 kt/yr
  • Total suspended sediment supply (flow weighted; normalized to area): 593kg/ha/yr
  • Total suspended sediment end-of-subcatchment (flow weighted) yield: 86 kt/yr
  • Event Mean Concentration (EMC - flow weighted): 763 mg/L
  • Mean Annual Flow: 112,887 ML

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

Gully and hillslope erosion are both identified as major sources of sediment and particulate nutrients affecting water quality within the Glenmore Creek sub-catchment (50% & 41% respectively). Extensive gully erosion is reported from Glenmore Creek sub-catchment. Total suspended sediment loss from all sources is predicted to be moderate (593 kg/ha/yr). The event mean concentration of suspended sediment is predicted to be moderately high (763 mg/L).

Water Quality Monitoring

There are no water quality monitoring data available for this catchment.

Relevant information of Water Quality Monitoring in the Bowen Broken Bogie River Basin:

Environmental Uses and Values

Aquatic Ecosystems

The aquatic ecosystem values of Glenmore Creek subcatchment are poorly known and, while considered to be Slightly to Moderately Disturbed (SMD) as a consequence of the surrounding land use for cattle grazing, the biological communities are thought to remain in a healthy condition and ecosystem integrity is likely to be largely retained. No High Ecological Value (HEV) waters have been identified in the subcatchment.

Stock Watering

Water supply for production of healthy livestock.

Cultural and Spiritual

Custodial use of water resources by Birri and Wirri traditional owners.

References:

Landuse

Principle land uses within the Glenmore Creek subcatchment as a proportion of total area:

  • Grazing: 96.2%
  • Conservation & minimal use: 3.75%
  • Water: Limited water activity use identified.
  • Urban & semi urban: Limited urban and semi urban water activity use identified.

Grazing Land

Glenmore Creek is a relatively small subcatchment where the principle land use is grazing on natural pastures.

Land Condition

Definition of ABCD land condition framework

No data available for Land Condition in the Glenmore Creek sub-catchment.

Ground Cover

No data available for Ground Cover in the Glenmore Creek sub-catchment.

Resource Condition Summary

Glenmore Creek is a relatively small subcatchment where the principle land use is grazing on natural pastures. Less than 4% of the land area is set aside for conservation and minimal use. Riparian habitat in the subcatchment has declined over the last 30 years due to clearing of vegetation along the main streams and tributaries, and increased gullying and scalding on floodplains. The catchment was in quite poor (C) condition in the 1970s, but by 2004 its condition had declined to very poor (D). Field survey scores support this assessment. Rosella Creek is a largely sandy, dry seasonal creek system with limited habitat availability, although some waterholes are present in Parrot Creek. However, very little is known about the ecology and condition of aquatic habitats.

Gully and hillslope erosion are both identified by models as major sources of sediment and particulate nutrients affecting water quality in the Glenmore Creek subcatchment. The rate of soil erosion is predicted to be moderate, but below the basin average, while the total soil loss from the subcatchment is quite low compared to other basin subcatchments. No rapid assessment data for land condition and ground cover are available for the subcatchment. Analysis of ground cover from satellite imagery identifies areas of low ground cover and high vulnerability to 'D' condition in the vicinity of Parrot Creek and the lower reaches and tributaries of Glenmore Creek. Extensive gully erosion is reported from the Glenmore Creek subcatchment.

Water quality in the Glenmore Creek subcatchment is predicted by models to be moderately impacted by suspended sediment during wet season flow events, with elevated concentrations at the end-of-subcatchment. There are no water quality monitoring data, however, with which to compare the modelled concentrations and loads.

Draft Environmental Values

The aquatic ecosystem values of the Glenmore Creek subcatchment are poorly known and, while considered to be Slightly to Moderately Disturbed (SMD) as a consequence of the surrounding land use for cattle grazing, the biological communities are thought to remain in a healthy condition and ecosystem integrity is likely to be largely retained. No High Ecological Value (HEV) waters have been identified in the subcatchment. Little is known about the human use Environmental Values of water in the subcatchment, which are thought to be limited to use for stock watering and the cultural and spiritual values of the Birri and Wirri traditional owners.

Maps

References

GlenmoreCreek.jpg
Download Catchment Layer as *.kml (requires Google Earth)

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