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→Erosion risk assessments (ERA)
==Erosion risk assessments (ERA)==
==Erosion risk assessments (ERA)==
[[File:Kawartha done era.jpg|400px|thumb|right|link=https://www.kawarthaconservation.com/news/posts/kawartha-conservation-uses-drones-for-erosion-control-at-gateway-of-lindsay/|ERAs divide a project site into areas of low, medium, and high erosion risk to optimize ESC placement. Kawartha Conservation used drones to map erosion risk on this site, helping to protect Sucker Creek other local water bodies from construction-related sediment runoff. Click the image to learn more (Kawartha Conservation, 2025)<ref>https://www.kawarthaconservation.com/news/posts/kawartha-conservation-uses-drones-for-erosion-control-at-gateway-of-lindsay/</ref>.]]
To manage the potential negative impacts of construction activities in the absence of effective ESC measures, Erosion Risk Assessments (ERAs) are conducted to guide the selection and placement of appropriate ESC practices on site.
To manage the potential negative impacts of construction activities in the absence of effective ESC measures, Erosion Risk Assessments (ERAs) are conducted to guide the selection and placement of appropriate ESC practices on site.
{{textbox|ERAs are recommended when:
{{textbox|ERAs are recommended when:
*the extent of land disturbance is greater than 10 ha and duration is longer than 30 days, or
*the extent of land disturbance is greater than 10 ha and duration is longer than 30 days, or
*construction activities are planned in or near natural water features, or
*construction activities are planned in or near natural water features, or
*the site drains to [https://www.ontario.ca/laws/regulation/080230 species at risk] habitat}}
*the site drains to [https://www.ontario.ca/laws/regulation/080230 species at risk] habitat}}
The hybrid qualitative ERA approach is recommended in the above situations with the exception of instances where local regulatory agencies require a different approach. The hybrid qualitative ERA approach estimates erosion risk by dividing a site into areas based on soil, slope, and ground cover, then rating each area as low, moderate, or high [[Erosion#Erosion_potential|erosion risk]] to help choose the right erosion control practices for each stage of construction.
The hybrid qualitative ERA approach is recommended in the above situations, with the exception of instances where local regulatory agencies require a different approach. The hybrid qualitative ERA approach estimates erosion risk by dividing a site into areas based on soil, slope, and ground cover, then rating each area as low, moderate, or high [[Erosion#Erosion_potential|erosion risk]] to help choose the right erosion control practices for each stage of construction. Completing an ERA demonstrates due diligence, identifies high-risk areas early, informs effective BMP selection and placement, guides the use of enhanced controls, and provides context for decision-making.
==ESC plan design==
==ESC plan design==