2011/2022: Herbert River Ingham (Qld). Pesticides: Multiple

Herbert River at Ingham

2365 pesticide detections July 2011 and May 2022

Diuron: 405 detections of Diuron between Oct 2011 and May 2022. 1.48ug/L (max 22/1/13). 0.109ug/L (av.)

2,4-D: 287 detections of 2,4-D between Jul 2012 and May 2022. 0.95ug/L (max 14/3/22). 0.1022ug/L (av.)

Ametryn: 39 detections of Ametryn between Nov 2011 and Jan 2022. 0.08ug/L (max 29/12/20). 0.0129ug/L (av.)

Atrazine: 266 detections of Atrazine between Oct 2011 and Mar 2022. 2.8ug/L (max 24/12/18). 0.112ug/L (av.)

Bromacil: 16 detections of Bromacil between Dec 2016 and May 2022. 0.15ug/L (max 29/12/20). 0.0563ug/L (av.)

Chlorpyrifos: 1 trace detection of Chlorpyrifos detected 1/1/22.

Diazinon: 14 detections of Diazinon between Dec 2016 and Apr 2022. 0.001ugL (max 18/5/17). 0.0002ug/L (av.)

Fluroxypur: 190 detections of Fluroxypur between Jan 2012 and May 2022. 0.094ug/L (max 23/2/20). 0.1306ug/L (av.)

Haloxyfop: 30 detections of Haloxyfop between Mar 2016 and Feb 2022. 0.09ug/L (max 11/1/19). 0.0153ug/L (av.)

Hexazinone: 341 detections of Hexazinone between Nov 2011 and Apr 2022. 0.43ug/L (max 14/12/16). 0.0512ug/L (av.)

Imazapic: 84 detections of Imazapic between Aug 2015 and Apr 2022. 0.17ug/L (max 25/8/15). 0.0128ug/L

Imidacloprid: 321 detections of Imidacloprid between Dec 2012 and May 2022. 1.9ug/L (max 17/11/21). 0.1007ug/L (av.)

Isoxaflutole: 27 detections of Isoxaflutole between Dec 2016 and Jan 2022. 0.04ug/L (max 28/1/22). 0.0054ug/L (av.)

MCPA: 73 detections of MCPA between Dec 2016 and May 2022. 0.6ug/L (max 16/2/22). 0.0502ug/L (av.)

Metolachlor: 147 detections of Metolachlor between Nov 2011 and March 2022. 0.72ug/L (max 14/12/16). 0.057ug/L (av.)

Metsulfuron Methyl: 12 detections of Metsulfuron Methyl between Feb 2013 and May 2017. 0.03ug/L (max 15/2/13). 0.0041ug/L (av.)

Metribuzin: 15 detections of Metribuzin between Mar 2016 and Oct 2017. 0.05ug/L (max 19/10/17). 0.014ug/L (av.)

Pendimethalin: 1 detection of Pendimethalin 17/11/21 0.03ug/L

Prometryn: 12 detections of Prometryn between Dec 2016 and Jan 2022. 0.03ug/L (max 2/1/22). 0.0028ug/L (av.)

Simazine: 26 detections of Simazine between Nov 2016 and Apr 2021. 0.9ug/L (max 19/5/17). 0.0581ug/L (av.)

Tebuthiuron: 44 detections of Tebuthiuron between Dec 2016 and Mar 2022. 0.02ug/L (max 11/3/22). 0.0059ug/L (av.)

Terbuthylazine: 4 detections of Terbuthylazine between Dec 2020 and Feb 2022. 0.06ug/L (max 17/11/21). 0.0325ug/L (av.)

Triclopyr: 10 detections of Triclopyr between Mar 2017 and Dec 2021. 0.56ug/L (max 9/3/20). 0.0754ug/L (av.)

Source: Pesticide Reporting Portal – Queensland Government. https://storymaps.arcgis.com/stories/c0f0c6d7d88a4fd3a5541fe59f41ff75

HerbertĀ  River at Ingham

Ametryn 7.8kg, Total Atrazine 120kg, Diuron 270kg, Hexazinone 81kg

Land Use Yield

Ametryn (Sugarcane) 0.032 kg/km2

Atrazine (Cropping, Forestry & Sugarcane) 0.18kg/km2

Diuron (Cropping, Horticulture & Sugarcane) 0.98kg/km2

Hexazinone (Forestry, Grazing & Sugarcane) 0.014kg/km2

Source: Reef Water Quality Protection Plan. Total Suspended Solids, Nutrients & Pesticide Loads (2012-2013) for Rivers that Discharge to the Great Barrier Reef – Great Barrier Reef Catchment Loads Monitoring 2012-2013

https://www.reefplan.qld.gov.au/measuring-success/paddock-to-reef/assets/2012-2013-gbr-catchment-loads-technical-report.pdf

An evaluation of the prevalence of alternate pesticides of environmental concern in Great Barrier Reef catchments: RP57C 2014
Rachael A Smith, Ryan Turner, Susi Vardy, Rae Huggins, Rohan Wallace, Michael St.J. Warne
Water Quality and Investigations, Environmental Monitoring and Assessment Sciences, Science Division, Queensland Department of Science, Information Technology, Innovation and the Arts.

Herbert River at Ingham

Pesticides: Ametryn, Atrazine, Diuron, Hexazinone, Metsulfuron Methyl, 2,4-D, Triclopyr, Metolachlor