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.


Depaving is the process of removing unnecessary pavement which contributes to stormwater pollution. Removing these impervious surfaces also allows for the creation of community green spaces and increases the land available for urban farming and habitat restoration. In some cases, a site may be depaved, and then turned into a rain garden.

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depave Projects

Total Square Feet26,200
Earliest Project DateMar, 2014
Latest Project DateJun, 2019


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

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