Changes

*'''[[Wet ponds|Detention ponds and stormwater basins]]''' store excess runoff and release it gradually.

*'''[[Wet ponds|Detention ponds and stormwater basins]]''' store excess runoff and release it gradually.

*'''Underground stormwater storage''' can help prevents sewer overflows. For example, the 4km long West Beaches Storage Tunnel in Toronto stores and treats combined sewer overflows and stormwater to prevent untreated sewage from entering Lake Ontario. It helps prevent localized flooding by collecting and storing water and uses [[sedimentation]] and UV disinfection to improve water quality (McNally, 2017) <ref name=McNally>McNally. 2017. Western Beaches Tunnel – Toronto, ON. http://mcnally.ca/tunneling-projects/western-beaches-tunnel-toronto/#:~:text=Project%20Outline,pump%20station%20at%20Strachan%20Avenue.</ref>.

*'''Underground stormwater storage''' can help prevents sewer overflows. For example, the 4km long West Beaches Storage Tunnel in Toronto stores and treats combined sewer overflows and stormwater to prevent untreated sewage from entering Lake Ontario. It helps prevent localized flooding by collecting and storing water and uses [[sedimentation]] and UV disinfection to improve water quality (McNally, 2017) <ref name=McNally>McNally. 2017. Western Beaches Tunnel – Toronto, ON. http://mcnally.ca/tunneling-projects/western-beaches-tunnel-toronto/#:~:text=Project%20Outline,pump%20station%20at%20Strachan%20Avenue.</ref>.

*'''Levees and floodwalls''' are most often used to protect against riverine and coastal flooding, and can also be used around buildings to protect from overland flooding.

*'''Levees and floodwalls''' are most often used to protect against riverine and coastal flooding, and can also be used around buildings to protect from surface flooding.

===Green Infrastructure & LID Solutions===

===Green Infrastructure & LID Solutions===