Green Interventions:

Roof Drains to Raingardens at All Downspouts:

Half of Lawn Replaced by Garden with Native Landscaping:

Porous Pavement used on Driveway, Sidewalk and other non-street pavement:

Green Roofs:

Provide Tree Cover for an Additional 25% of Lot:

Use Drainage Swales instead of Stormwater Pipes:

Site Statistics:

Select a scenario:

Custom Dense Urban Neighborhood Single Family Home, Urban New Development, Suburban Single Family Home, Suburban

Is this an existing site:

Total size of site:

acres

Number of lots:

Average Roof Size, including Garage:

ft.²

Average Number of Trees on Lot:

Average Driveway Area:

ft.²

Average Impermeable patio, deck, alley or parking lot:

ft.²

Sidewalk Width:

ft.

Average Street Width:

ft.

Soil Type:

A B C D

Average Slope:

1% 3%

Real Discount Rate:

%

Life Cycle in Years:

5 10 20 30 50 100