2019/2023: Kolan River at Barrage, Avondale (Qld). Pesticides: Multiple

Kolan River at Barrage

425 pesticide detections between Nov 2019 and Feb 2023

Diuron: 59 detections of Diuron between Nov 2019 and Feb 2023. 0.96ug/L (max 19/11/21). 0.1947ug/L (av.)

2,4-D: 46 detections of 2,4-D between Feb 2020 and Feb 2023. 0.4ug/L (max 19/11/21). 0.1015ug/L (av.)

Atrazine: 63 detections of Atrazine between Jan 2020 and Feb 2023. 0.74ug/L (max 26/2/23). 0.072ug/L (av.)

Bromacil: 13 detections of Bromacil between Feb 2020 and Mar 2020. 0.27ug/L (max 25/2/20). 0.1323ug/L (av.)

Chlorpyrifos: 12 trace detections of Chlorpyrifos between Feb 2020 and Nov 2021.

Diazinon: 4 trace detections of Diazinon in Nov 2021.

Fluroxypur: 6 detections of Fluroxypur between Feb 2020 and Dec 2022. 0.16ug/L (max 28/11/21). 0.105ug/L (av.)

Haloxyfop: 16 detections of Haloxyfop between Nov 2021 and Feb 2023. 0.17ug/L (max 9/1/22). 0.0456ug/L (av.)

Hexazinone: 25 detections of Hexazinone between Jan 2020 and Feb 2023. 0.17ug/L (max 12/12/22). 0.0164ug/L (av.)

Imazapic: 44 detections of Imazapic between Feb 2020 and Feb 2023. 0.1ug/L (max 10/2/20). 0.0286ug/L (av.)

Imidacloprid: 45 detections of Imidacloprid between Feb 2020 and May 2022. 0.19ug/L (max 14/11/21). 0.0604ug/L (av.)

MCPA: 6 detections of MCPA between Nov 2021 and Oct 2022. 0.05ug/L (max 30/10/22). 0.0283ug/L (av.)

Metolachlor: 74 detections of Metolachlor between Feb 2020 and Feb 2023. 0.31ug/L (max 25/2/20). 0.0558ug/L (av.)

Metsulfuron Methyl: 1 detection of Metsulfuron Methyl 9/3/22 0.02ug/L

Metribuzin: 5 detections of Metribuzin between May 2022 and Dec 2022. 0.07ug/L (max 30/6/22). 0.04ug/L (av.)

Tebuthiuron: 5 detections of Tebuthiuron in Dec 2021. 0.03ug/L (max 11/12/21). 0.018ug/L (av.)

Triclopyr: 1 detection of Triclopyr 25/10/22 0.1ug/L