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[[File:Screenshot 2025-09-12 113952.png|500px|thumb|right|Recommended regional 90th percentile volume targets for Ontario <ref>MECP. 2022. Low Impact Development Stormwater
[[File:Screenshot 2025-09-12 113952.png|500px|thumb|right|Recommended regional 90th percentile volume targets for Ontario (MECP, 2022) <ref>MECP. 2022. Low Impact Development Stormwater
Management Guidance Manual Draft. https://ero.ontario.ca/public/2022-01/Draft%20LID%20Stormwater%20Management%20Guidance%20Manual%202022.pdf</ref>]]
Management Guidance Manual Draft. https://ero.ontario.ca/public/2022-01/Draft%20LID%20Stormwater%20Management%20Guidance%20Manual%202022.pdf</ref>]]
[[File:Pearson_Graph.png|thumb|Typically designed to handle the smaller, most frequent storm events, LID practices in Southern Ontario are usually sized according to the 90th percentile event]]
[[File:Pearson_Graph.png|thumb|Typically designed to handle the smaller, most frequent storm events, LID practices in Southern Ontario are usually sized according to the 90th percentile event]]