Nitrogen and phosphorous level in the Theresa Catchment 2013-14. Source: Fitzroy Partnership for River Health; see http://riverhealth.org.au/report_card/ehi/2013/theresa/nutrient
Data used o produce Figure WAT15 in the Inland Waters theme of the 2016 State of the Environment Report, available at
https://soe.environment.gov.au/theme/inland-water/topic/2016/water-quality#inland-water-figure-15