09034: Implementing the Peel–Harvey Water Quality Improvement Plan

    Nutrient-stripping wetland planted on a Serpentine–Jarrahdale property. Courtesy Peel–Harvey Catchment Council
    Nutrient-stripping wetland planted on a Serpentine–Jarrahdale property. Courtesy Peel–Harvey Catchment Council

    In June 2006 the Peel-Harvey catchment system was identified as one of 19 nationwide hotspots for water quality issues, in particular an excess of nutrients. The catchment has a history of extremely poor water quality, with many recorded algae blooms and fish kills.

    The catchment continues to be subject to:

    • intensive urban growth
    • industrial growth
    • intensive and broadacre agriculture.

    The Water Quality Improvement Plan (WQIP) focuses on stripping excess nutrients from the system and monitoring and evaluating the impact of nutrient reduction initiatives.

    The project is responsible for the following:

    • Local governments within the catchment will be supported to design and install stormwater retrofits to improve the quality of water discharged to the environment
    • Nutrient-stripping wetlands will be constructed and landholders supported to protect and restore riparian zones.
    • Water quality monitoring programs will be continued to enable long-term evaluation of catchment-based initiatives.
    Investment: $ 1 000 000
    In-kind contribution: $ 103 000
    Other contribution: $ 102 000
    Delivery organisation: Department of Water and Peel–Harvey Catchment Council
    Project duration: February 2010 - December 2011
    Location: Peel–Harvey Estuary

    Major project achievements

    • Grade banks and bio-filter including 10 000 sedges and rushes established on a demonstration farm in Serpentine-Jarrahdale to reduce water-borne phosphorous export into the Serpentine River.
    • Two phosphorus retention trials completed in cooperation with Friends of Rivers Peel and the Department of Agriculture and Food.
    • Adjustable weir constructed at Mealup Main Drain to recover Lake Mealup.
    • Vegetated swale created at Muddy Creek in Mandurah.
    • Nutrient retention basin constructed at Greenham Way in Kwinana.
    • Detailed design completed for a nutrient stripping wetland at Fouracre Street in Waroona.
    • "On-Farm Water management; a Landholder's perspective" booklet distributed to 1000 community members.

    Project partners

    Department of Environment and Conservation; Lake Mealup Preservation Society; South West Catchments Council; Neil Kentish; Serpentine Jarrahdale Landcare; City of Mandurah; Shire of Waroona; Town of Kwinana; Friends of Rivers Peel; Department of Agriculture and Food; Gnarla Karla Booja; Grahame Lark; South West Aboriginal Land and Sea Council

    More information

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