Water Turbidity
Benchmark Value
Scoring Curve
This curve shows how a field measurement for this indicator would score across all available benchmark forms in this context.
Evidence & Context
The final proposed reference value is 5 NTU.
Water turbidity measured in Nephelometric Turbidity Units (NTU) representing the annual mean turbidity in designated high-health reference zones for an industrial port.
This benchmark represents the upper bound of annual mean water turbidity in high-health reference zones near industrial areas, indicating a managed state where sensitive ecosystems avoid significant chronic stress from turbidity.
Selected based on long-term, multi-site, peer-reviewed monitoring data from the Port of Rockhampton's reference sites, representing a 'slightly disturbed' but ecologically functional system.
Sources (3)
Port of Mackay and Hay Point Ambient Marine Water Quality ..., accessed August 2, 2025,
View SourceTurbidity - Port of Townsville, accessed August 1, 2025,
View SourceGreat Barrier Reef Marine Park Authority (GBRMPA). (2010). Water Quality Guidelines for the Great Barrier Reef Marine Park. Rev. ed. 35
View SourceSupporting Sources (50)
Additional references from the underlying research that informed this benchmark.
'Forever Chemicals' found at Chevron's Barrow Island Gorgon LNG project pose long-term environmental threat - Conservation Council of Western Australia, accessed August 1, 2025,
View Source(PDF) Port of Mackay and Hay Point Ambient Marine Water Quality ..., accessed August 2, 2025,
View Source2024 review of maintenance dredging of Queensland ports - Transport and Main Roads, accessed August 1, 2025,
View Source25 March 2013 Gladstone Review Secretariat P.O. Box 787 Canberra ACT 2601 Dear Sir/Madam Thank you for the opportunity to make - DCCEEW, accessed August 1, 2025,
View Source5 October 2011 Water quality testing shows little change in Gladstone Harbor The State Government has today released a report r, accessed July 21, 2025,
View SourceA review of port activities in the Great Barrier Reef ... - ResearchGate, accessed August 1, 2025,
View SourceAbstract - DCCEEW, accessed August 1, 2025,
View SourceCOMPLIANCE WATER QUALITY MONITORING FOR PORT OF ..., accessed August 1, 2025,
View SourceElevated Turbidity and the Nutrient Removal Capacity of Seagrass - Frontiers, accessed August 1, 2025,
View SourceFeedback between sediment and light for seagrass: Where is it important? - UQ eSpace - The University of Queensland, accessed August 1, 2025,
View SourceFrequently asked questions: Reef 2050 Water Quality Improvement Plan and 2017 Scientific Consensus Statement, accessed August 1, 2025,
View SourceGas seeping to surface from Chevron's Barrow Island oil operation - Boiling Cold, accessed August 1, 2025,
View Sourcegbr-dredge-material-management-appendixb.docx - DCCEEW, accessed August 1, 2025,
View SourceGladstone Turbidity Data Summary, accessed August 1, 2025,
View SourceGorgon Gas Development and Jansz Feed Gas ... - Chevron Australia, accessed August 1, 2025,
View SourceGorgon Gas Development Barrow Island Nature Reserve (EPA Bulletin 1221), accessed August 1, 2025,
View SourceGuidelines - GBRMPA eLibrary, accessed August 1, 2025,
View SourceHorn Island remediation project | Environment, land and water | Queensland Government, accessed August 1, 2025,
View SourceI want to convert kd490 unit - Earthdata Forum - NASA, accessed August 1, 2025,
View SourceIn the Northern Territory, contamination of water caused by resource extraction is linked historically to the inappropriate disposal of waste products, chemicals and heavy metals produced during the mining process. - - Artback NT, accessed August 1, 2025,
View SourceInshore water quality | Reef Authority, accessed August 2, 2025,
View Sourcekey economic issues facing marine based industries in the South-east Marine Region - DCCEEW, accessed August 1, 2025,
View SourceLargest study of water quality effects on Great Barrier Reef | AIMS, accessed August 2, 2025,
View SourceLet there be light - Geoscience Australia, accessed August 1, 2025,
View SourceList of ports in Australia - Wikipedia, accessed August 1, 2025,
View SourceLocation of Queensland standard ports, accessed August 1, 2025,
View SourceLong-term spatial variations in turbidity and temperature provide new insights into coral-algal states on extreme/marginal reefs - ResearchOnline@JCU
View SourceMaintenance Dredging of Queensland Ports Review of 2019 Activities - Transport and Main Roads, accessed August 1, 2025,
View SourceMonitoring light key to guiding port dredging activities | AIMS, accessed August 1, 2025,
View SourceNearshore Turbid-Zone Corals Exhibit High Bleaching Tolerance on the Great Barrier Reef Following the 2016 Ocean Warming Event - Frontiers, accessed August 1, 2025,
View SourceNorth Queensland Bulk Ports Corporation Limited | Annual Report, accessed August 1, 2025,
View SourcePort Curtis Integrated Monitoring Program, accessed August 1, 2025,
View SourcePort of Abbot Point Ambient Marine Water Quality Monitoring ..., accessed August 1, 2025,
View SourcePort of Townsville Communicates Results of Water Quality Monitoring Programs in Real Time - Bentley Systems, accessed August 1, 2025,
View SourcePort of Weipa Ambient Marine Water Quality Monitoring Program (January 2018, accessed August 1, 2025,
View SourcePreliminary assessment of water quality requirements of seagrasses in Western Port - Melbourne Water, accessed August 1, 2025,
View SourceRelative risks to the Great Barrier Reef from degraded water quality, accessed July 18, 2025
View SourceSpatial Patterns in Water Quality Changes during Dredging in Tropical Environments - PMC, accessed August 1, 2025,
View SourceTechnical Guidance - EPA WA, accessed August 1, 2025,
View SourceTorres Strait - Wikipedia, accessed August 1, 2025,
View SourceTrade Statistics for Queensland Ports - Transport and Main Roads, accessed August 1, 2025,
View SourceTurbid Coral Reefs: Past, Present and Future—A Review - MDPI, accessed August 2, 2025,
View SourceTurbid reefs moderate coral bleaching under climate‐related temperature stress - PMC, accessed August 2, 2025,
View SourceWater | Global - Rio Tinto, accessed August 1, 2025,
View SourceWater Managemen Plan - NTEPA, accessed August 1, 2025,
View SourceWater quality - Gladstone Ports Corporation, accessed July 21, 2025,
View SourceWater Quality | Port of Townsville, accessed August 1, 2025,
View SourceWater quality guidelines for the Great Barrier Reef - eAtlas, accessed August 2, 2025,
View SourceWater quality monitoring | North Queensland Bulk Ports Corporation Ltd, accessed August 1, 2025,
View SourceWaterhouse, J. and Devlin, M. (2011) Managing water quality on the Great Barrier Reef: An overview of MTSRF research outputs, 2006-2010, accessed August 1, 2025,
View Source