Sound Impacts is an online portal for all of the region’s practitioners and implementers of Green Infrastructure as well as for anyone curious to see what efforts and investments are being made to protect and improve this region’s natural assets.

  green roof

A green roof is the roof of a building which is partially or completely covered with vegetation. A green roof may consist of features such as a drainage system, filter cloth, root repellant layer, and thermal insulation. Green roofs reduce stormwater runoff by reducing, retaining and delaying runoff during rainfall events.

 Add Project


green roof Projects

Total Square Feet2,025
Earliest Project DateMay, 2013
Latest Project DateMay, 2013


Gallons of Runoff Managed

Annual estimate based on the simple calculation:
square footage x annual rainfall x gallons conversion

For more detailed impact calculations, please visit the dashboard page.

The calculations for Gallons of Runoff Managed were derived by long term monitoring and modeling by Herrera Environmental and provided by Seattle 2030 District

Sound Impacts is in beta state. If you would like to report a bug or data issue, suggest a feature, or get in touch please contact us.