Preston River - Dardanup Road West
Basin : Preston River
Catchment : Preston River
River condition at the Dardanup Road West site (site code: PR40PRES1, site reference: 6114021) on the Preston River has been assessed as part of the Healthy Rivers Program (Healthy Rivers), using standard methods from the South West Index of River Condition (SWIRC). The SWIRC incorporates field and desktop data from the site and from the broader catchment. Field data collected included the following indicators, assessed over about a 100 m length of stream:
- Aquatic biota: fish and crayfish community information (abundance of native and exotic species across size classes, general reproductive and physical condition)
- Water quality: dissolved oxygen, temperature, specific conductivity, and pH (logged in-situ over 24 hours) as well as laboratory samples for colour, alkalinity, turbidity and nutrients
- Aquatic habitat: e.g. water depth, substrate type, presence of woody debris and detritus, type and cover of macrophytes and draping vegetation
- Physical form: channel morphology, bank slope and shape, bioconnectivity (barriers to migration of aquatic species), erosion and sedimentation
- Fringing zone: width and length of vegetation cover within the river corridor and lands immediately adjacent, structural intactness of riparian and streamside vegetation
- Hydrology: measures of flow (velocity) at representative locations (compared against data from stream gauging stations within the system)
- Local land use: descriptions of local land use types and activities (compared against land use mapping information for the catchment)
This is the first assessment of this site using the SWIRC methods. At this time no previous assessments of river ecology had been reported.
Assessments are listed below:
- 2020 – summer (February 26-27 ): Healthy Rivers
At this site, water quality was also logged over an extended period:
- 2019-2020 (December-April): Healthy Rivers
Other departmental data: The Dardanup Road West site is about 7 km downstream of gauging station number 611004 on the Preston River at Boyanup, which is owned by the department and is currently monitored.
Search using the site code or site reference in the Department of Water and Environmental Regulation’s Water Information Reporting (WIR) system to find data for this site and nearby sampling points (flow, surface water quality, groundwater monitoring, department’s meteorological data). See also the Bureau of Meteorology website for additional meteorological data for the area.
A complete condition summary for this site has not been published. Please contact the department’s River Science team for further information (please provide the site code and sampling dates).
The image below indicates conditions at the Dardanup Road West site during field work in February 2020. February is within the Noongar season of Bunuru, which is generally the hottest and often driest part of the year.
Images are provided in the gallery at the bottom of the page to show general site conditions and species recorded.
Species found in subcatchment
Species found at the site
Fish and crayfish
As this was the first time this site had been sampled using SWIRC methods, the species expected to occur here (listed below) are based on species reported from studies conducted elsewhere in the subcatchment. As differences in habitat within a reach naturally influence species distributions, and variability in methods between sampling programs can affect the species caught, this list is only indicative.
Note: collection of fauna from WA’s inland aquatic ecosystems requires a license from the Department of Primary Industries and Regional Development (DPIRD) and also the Department of Biodiversity, Conservation and Attractions (DBCA). All species collected must be reported to these agencies as part of license conditions.
Only fish and freshwater crustaceans (crayfish and shrimp) that typically inhabit river channels are targeted by the standard SWIRC sampling methods.