Water Testing Results of Sites in the City of Bunbury

RESULTS

Experimental Site 5  

Site: St Mark’s Pond, Picton 

The pH level reaches the upper acceptable limit in 2005 and 2007. This similar situation occurred at Horseshoe lake. The higher readings also occurs at the time of low water levels in the ponds. Limestone or detergents could increase the alkalinity of water.

The Bunbury area is located near an underground limestone ridge, so this could be a natural source of limestone leaching into the groundwater.

Macro invertebrate Sampling in Water sites in Bunbury City

KEY

Site: St Mark’s Pond, Picton  

Checking nets for fish at St Mark’s Pond

St Mark’s Pond, Picton

Conclusion

Our sampling has indicated a fair level of water quality that is able to support a native fish species. The sedges and emergent grasses around parts of the pond perimeter will provide protection and attachment of the developing fish eggs. This small area supports a large diversity of water birds. We have found long neck turtles and swan river goby fish. The sediment of this lake is very thick (up to 10 cm), black and muddy. It forms the original flood plain of the Preston River which flows less than 200m away.

Western Pygmy Perch were released here in 2005, 2006 and 2007. Western Minnow were released in 2006 and 2007.

The pond is surrounded by housing, so people live in very close proximity to a natural mosquito habitat. Releasing the Western Minnow and Western Pygmy Perch is a positive step in controlling the mosquito and midgie problem in this suburban area.

Top

• The Project
  • Introduction
  • Method
• Results
  • Control
  • Breeding Pond
• Release Sites
  • Big Swamp
  • Dodson Lake
  • Five Mile Brook
  • Horseshoe lake
  • St Marks Pond
  • West Street Sump
  • Release Dates
  • Other Sites
• Conclusion
• Conclusion
• Discussion
• Recommendations
• Community Awareness
• Acknowledgements
• Links
  • N.M.S.H.S Wetlands
  • Bunbury City Council
  • N.M.S.H.S
  • Dolphin Discovery Centre