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==Guidelines==
==Guidelines==
[[File:Temporal changes (5-yr median) 1966 - 2022.jpg|thumb|600px|Temporal changes in 5-year median chloride concentration (1966-2020). All stations had higher median chloride concentrations in 2016-2020 compared to the last time 5-year median concentrations were culminated into a report (2011-2015) and the difference in concentration between time periods appeared to be greater for stations with higher chloride concentrations. The reasons behind this pattern are unknown and warrant further investigation, but median concentrations are above the chronic level of 120 mg/L in all of the more urbanized watersheds, south towards Lake Ontario (TRCA, 2021).<ref name="example2">TRCA. 2021. Spatial Patterns (2016-2020) and Temporal Trends (1966-2020) in Stream Water Quality across TRCA’s Jurisdiction. Prepared by Watershed Planning and Ecosystem Science. October, 2021. https://trcaca.s3.ca-central 1.amazonaws.com/app/uploads/2021/10/29113334/2016-2020-SWQ-Report-v11_FINAL_AODA-FA.pdf</ref>]]
[[File:Temporal changes (5-yr median) 1966 - 2022.jpg|thumb|600px|Temporal changes in 5-year median chloride concentration (1966-2020). All stations had higher median chloride concentrations in 2016-2020 compared to the last time 5-year median concentrations were culminated into a report (2011-2015) and the difference in concentration between time periods appeared to be greater for stations with higher chloride concentrations. The reasons behind this pattern are unknown and warrant further investigation, but median concentrations are above the chronic level of 120 mg/L in all of the more urbanized watersheds, south towards Lake Ontario (TRCA, 2021).<ref name="example2">TRCA. 2021. Spatial Patterns (2016-2020) and Temporal Trends (1966-2020) in Stream Water Quality across TRCA’s Jurisdiction. Prepared by Watershed Planning and Ecosystem Science. October, 2021. https://sustainabletechnologies.ca/app/uploads/2021/10/2016-2020-SWQ-Report-v11_FINAL_AODA-FA.pdf</ref>]]
[[File:Avg. chloride conc 2016 - 2020.jpg|thumb|600px|Average chloride concentration between 2016 - 2020 from collected grab samples. Most stations in the Southeastern part of TRCA's watershed within the Etobicoke, Mimico Creeks and the Humber River had much higher than the CWQG acute level of chloride (640mg/L), some at more than ~3 times this concentration (TRCA, 2021).<ref name="example2" />.]]
[[File:Avg. chloride conc 2016 - 2020.jpg|thumb|600px|Average chloride concentration between 2016 - 2020 from collected grab samples. Most stations in the Southeastern part of TRCA's watershed within the Etobicoke, Mimico Creeks and the Humber River had much higher than the CWQG acute level of chloride (640mg/L), some at more than ~3 times this concentration (TRCA, 2021).<ref name="example2" />.]]