Upper Chapman Brook - Bridgelands Road

Basin : Blackwood River

Catchment : Lower Blackwood River

The condition of the Upper Chapman Brook - Bridgelands Road site (site code: UCHAPX2/6090066), in the middle catchment of the Upper Chapman Brook has been assessed on several occasions:

  • 19 June 2012 (one day only)
  • 22-23 October 2012
  • 4-5 February 2013

Note: this site is close to the Upper Chapman Brook - Upstream Bridgelands Road (BR37UPPE1/6090084) site, but is considered a separate sampling site.

The assessment was conducted using standard methods from the South West Index of River Condition. Measures chosen for this assessment included fish and crayfish, macroinvertebrates, aquatic habitat, water quality (dissolved oxygen and temperature logged over 24h, and electrical conductivity, pH, colour, alkalinity, turbidity and nutrients), fringing vegetation, channel morphology, erosion, connectivity, local land use and flow.

Condition summary

The site was assessed as part of an assessment of river condition in the lower catchment of the Blackwood River – view report here.

A snapshot of the condition of the Upper Chapman Brook can be found here.

Fish and crayfish

Three fish and four crayfish species were found at this site:

  • Bostockia porosa (Nightfish)
  • Galaxias occidentalis (Western minnow)
  • Nannoperca vittata (Western pygmy perch)
  • Cherax cainii (Smooth marron)
  • Cherax quinquecarinatus (Gilgie)
  • Cherax crassimanus (Restricted gilgie)
  • Cherax destructor (Yabby)

Only fish and crayfish are targeted by sampling methods. Other species that were caught and/or observed are listed below:

  • Westralunio carteri (Carter’s freshwater mussel)

Please contact the River Science Branch for specific yearly species counts.

Click on the images below to learn more.

Species found in subcatchment

This includes all species found within the subcatchment of the assessment site, from this and previous studies in the area. The photos are linked to more information about each species, including maps of where they are expected across the south-west.

Explore other sites in the catchment