Green Values Stormwater Management Calculator

Area	Construction Cost	Annual Maintance Cost	Typical Useful Life
Flat Roof ?	$ 4 per ft² \| edit	$ 0.14 /Year per ft² \| edit	20 Years \| edit
Pitched Roof ?	$ 4 per ft² \| edit	$ 0.14 /Year per ft² \| edit	20 Years \| edit
Sidewalk ?	$ 7.32 per ft² \| edit	$ 0.0193 /Year per ft² \| edit	40 Years \| edit
Patio, pool deck, etc. ?	$ 12.52 per ft² \| edit	$ 1 /Year per ft² \| edit	25 Years \| edit
Parking Surface ?	$ 3.05 per ft² \| edit	$ 0.93 /Year per ft² \| edit	15 Years \| edit
Driveway ?	$ 6 per ft² \| edit	$ 2.25 /Year per ft² \| edit	20 Years \| edit
Pool, Water Features, etc. ?	$ 72 per ft² \| edit	$ 7.65 /Year per ft² \| edit	25 Years \| edit
Street ?	$ 4.33 per ft² \| edit	$ 0.055 /Year per ft² \| edit	35 Years \| edit
Lawn/Turf ?	$ 0.7 per ft² \| edit	$ 0.12 /Year per ft² \| edit	12.5 Years \| edit
Flower Bed/Garden ?	$ 0.7 per ft² \| edit	$ 0.12 /Year per ft² \| edit	12.5 Years \| edit
Vegetable Garden ?	$ 0.7 per ft² \| edit	$ 0.12 /Year per ft² \| edit	12.5 Years \| edit
Shrub and Bushes ?	$ 0.7 per ft² \| edit	$ 0.12 /Year per ft² \| edit	12.5 Years \| edit
Raised deck ?	$ 15 per ft² \| edit	$ 1.5 /Year per ft² \| edit	15 Years \| edit
Natural Open Area ?	$ 0 per ft² \| edit	$ 0 /Year per ft² \| edit	100 Years \| edit
Natural Wetlands ?	$ 1.4 per ft² \| edit	$ 0.03 /Year per ft² \| edit	20 Years \| edit
Natural Water ?	$ 0 per ft² \| edit	$ 0 /Year per ft² \| edit	100 Years \| edit

Start from a template or design a custom scenario.

Urban Home

Small lot 6,075 ft² (135' x 45')

a small house
garage
sidewalk
yard

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Apartment

Medium lot 8,400 ft² (140' x 60')

a building
sidewalk
patio
very small yard

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Suburban

Large lot 24,000ft² (200' x 120')

a large house
garage
driveway
sidewalk
yard

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Commercial

Large lot 50,000 ft² (250' x 200')

a building
parking lot
driveway
small amount of landscaping

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Urban Park Area

6.8 Acres Area With a Park

3 Acre park
Streets and sidewalks
Residential buildings, lawns and landscaping

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Community Garden

Small lot 6,075 ft² (135' x 45')

5 100' x 4' Raised Beds
Paved Sidewalks
Staging Area
Lawn Walkways

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Urban Farm

One Acre Lot

.75 Acres Cultivated
2 Hoop houses
Small tool shed
Shipping Container
Paved Staging Area
Lawn Walkways

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Urban School Grounds

Large Urban Lot (375' x 330')

School Building
Auxilary Building
Parking Lot
Paved Play Area
Playground
Sidewalks etc.

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Custom Scenario

Customize:

Enter a location for local rainfall data:

Volume Capacity Capture Goal

Increase the capacity of the landscape to capture at least 0 inches of water over the impervious areas. For this scenario that is equal to 0 ft³ or a volume of 0 gallon.

edit goal

The Green Infrastructure BMPs included below can provide runoff reduction benefits through infiltration, evapotranspiration, and reuse of captured stormwater for irrigation and other non-potable uses. Green infrastructure BMPs provide additional environmental benefits including carbon sequestration, reduced energy use, and groundwater recharge in addition to reduced construction and maintenance costs and extended design life. Experiment with applying different combinations of BMPs then see how you can progress towards meeting the specified runoff reduction goal, reduce total runoff volume from the site (annually and for the average storm), reduce site imperviousness, and affect life-cycle costs and benefits.

Roof Water Capture

Green Roof

Rain Barrel

Cistern

Drywell

Roof Water Redirection

Rain Garden

Planter Boxes

Foundation/Perimeter Drain

Landscaping

Trees

Amended Soil

Bio-Swales

Urban Farming/Gardening

Raised Bed

Vegetation Filter Strip

Native Vegetation

Directing Runoff

Parking Lot Swales

Roadside Swales

Permeable Paving

Permeable Patio

Permeable Parking

Permeable Sidewalks

Permeable Driveway

Permeable Streets

Cost Details

	Area	Initial Cost	Annual Maintenance Cost	Life Cycle Cost (NPV)
Flat Roof	ft²	$	$	$
Green Roof	ft²	$	$	$
Rain Barrel	ft²	$	$	$
Cistern	ft²	$	$	$
Drywell	ft²	$	$	$
Rain Garden	ft²	$	$	$
Planter Boxes	ft²	$	$	$
Foundation/Perimeter Drain	ft²	$	$	$
Trees	ft²	$	$	$
Amended Soil	ft²	$	$	$
Bio-Swales	ft²	$	$	$
Urban Farming/Gardening	ft²	$	$	$
Raised Bed	ft²	$	$	$
Vegetation Filter Strip	ft²	$	$	$
Native Vegetation	ft²	$	$	$
Parking Lot Swales	ft²	$	$	$
Roadside Swales	ft²	$	$	$
Permeable Patio	ft²	$	$	$
Permeable Parking	ft²	$	$	$
Permeable Sidewalks	ft²	$	$	$
Permeable Driveway	ft²	$	$	$
Permeable Streets	ft²	$	$	$
Flat Roof BMPs Total	ft²	$	$	$
Remaining Flat Roof area	ft²	$	$	$
Flat Roof with BMPs	ft²	$	$	$
Pitched Roof	ft²	$	$	$
Green Roof	ft²	$	$	$
Rain Barrel	ft²	$	$	$
Cistern	ft²	$	$	$
Drywell	ft²	$	$	$
Rain Garden	ft²	$	$	$
Planter Boxes	ft²	$	$	$
Foundation/Perimeter Drain	ft²	$	$	$
Trees	ft²	$	$	$
Amended Soil	ft²	$	$	$
Bio-Swales	ft²	$	$	$
Urban Farming/Gardening	ft²	$	$	$
Raised Bed	ft²	$	$	$
Vegetation Filter Strip	ft²	$	$	$
Native Vegetation	ft²	$	$	$
Parking Lot Swales	ft²	$	$	$
Roadside Swales	ft²	$	$	$
Permeable Patio	ft²	$	$	$
Permeable Parking	ft²	$	$	$
Permeable Sidewalks	ft²	$	$	$
Permeable Driveway	ft²	$	$	$
Permeable Streets	ft²	$	$	$
Pitched Roof BMPs Total	ft²	$	$	$
Remaining Pitched Roof area	ft²	$	$	$
Pitched Roof with BMPs	ft²	$	$	$
Sidewalk	ft²	$	$	$
Green Roof	ft²	$	$	$
Rain Barrel	ft²	$	$	$
Cistern	ft²	$	$	$
Drywell	ft²	$	$	$
Rain Garden	ft²	$	$	$
Planter Boxes	ft²	$	$	$
Foundation/Perimeter Drain	ft²	$	$	$
Trees	ft²	$	$	$
Amended Soil	ft²	$	$	$
Bio-Swales	ft²	$	$	$
Urban Farming/Gardening	ft²	$	$	$
Raised Bed	ft²	$	$	$
Vegetation Filter Strip	ft²	$	$	$
Native Vegetation	ft²	$	$	$
Parking Lot Swales	ft²	$	$	$
Roadside Swales	ft²	$	$	$
Permeable Patio	ft²	$	$	$
Permeable Parking	ft²	$	$	$
Permeable Sidewalks	ft²	$	$	$
Permeable Driveway	ft²	$	$	$
Permeable Streets	ft²	$	$	$
Sidewalk BMPs Total	ft²	$	$	$
Remaining Sidewalk area	ft²	$	$	$
Sidewalk with BMPs	ft²	$	$	$
Patio, pool deck, etc.	ft²	$	$	$
Green Roof	ft²	$	$	$
Rain Barrel	ft²	$	$	$
Cistern	ft²	$	$	$
Drywell	ft²	$	$	$
Rain Garden	ft²	$	$	$
Planter Boxes	ft²	$	$	$
Foundation/Perimeter Drain	ft²	$	$	$
Trees	ft²	$	$	$
Amended Soil	ft²	$	$	$
Bio-Swales	ft²	$	$	$
Urban Farming/Gardening	ft²	$	$	$
Raised Bed	ft²	$	$	$
Vegetation Filter Strip	ft²	$	$	$
Native Vegetation	ft²	$	$	$
Parking Lot Swales	ft²	$	$	$
Roadside Swales	ft²	$	$	$
Permeable Patio	ft²	$	$	$
Permeable Parking	ft²	$	$	$
Permeable Sidewalks	ft²	$	$	$
Permeable Driveway	ft²	$	$	$
Permeable Streets	ft²	$	$	$
Patio, pool deck, etc. BMPs Total	ft²	$	$	$
Remaining Patio, pool deck, etc. area	ft²	$	$	$
Patio, pool deck, etc. with BMPs	ft²	$	$	$
Parking Surface	ft²	$	$	$
Green Roof	ft²	$	$	$
Rain Barrel	ft²	$	$	$
Cistern	ft²	$	$	$
Drywell	ft²	$	$	$
Rain Garden	ft²	$	$	$
Planter Boxes	ft²	$	$	$
Foundation/Perimeter Drain	ft²	$	$	$
Trees	ft²	$	$	$
Amended Soil	ft²	$	$	$
Bio-Swales	ft²	$	$	$
Urban Farming/Gardening	ft²	$	$	$
Raised Bed	ft²	$	$	$
Vegetation Filter Strip	ft²	$	$	$
Native Vegetation	ft²	$	$	$
Parking Lot Swales	ft²	$	$	$
Roadside Swales	ft²	$	$	$
Permeable Patio	ft²	$	$	$
Permeable Parking	ft²	$	$	$
Permeable Sidewalks	ft²	$	$	$
Permeable Driveway	ft²	$	$	$
Permeable Streets	ft²	$	$	$
Parking Surface BMPs Total	ft²	$	$	$
Remaining Parking Surface area	ft²	$	$	$
Parking Surface with BMPs	ft²	$	$	$
Driveway	ft²	$	$	$
Green Roof	ft²	$	$	$
Rain Barrel	ft²	$	$	$
Cistern	ft²	$	$	$
Drywell	ft²	$	$	$
Rain Garden	ft²	$	$	$
Planter Boxes	ft²	$	$	$
Foundation/Perimeter Drain	ft²	$	$	$
Trees	ft²	$	$	$
Amended Soil	ft²	$	$	$
Bio-Swales	ft²	$	$	$
Urban Farming/Gardening	ft²	$	$	$
Raised Bed	ft²	$	$	$
Vegetation Filter Strip	ft²	$	$	$
Native Vegetation	ft²	$	$	$
Parking Lot Swales	ft²	$	$	$
Roadside Swales	ft²	$	$	$
Permeable Patio	ft²	$	$	$
Permeable Parking	ft²	$	$	$
Permeable Sidewalks	ft²	$	$	$
Permeable Driveway	ft²	$	$	$
Permeable Streets	ft²	$	$	$
Driveway BMPs Total	ft²	$	$	$
Remaining Driveway area	ft²	$	$	$
Driveway with BMPs	ft²	$	$	$
Pool, Water Features, etc.	ft²	$	$	$
Green Roof	ft²	$	$	$
Rain Barrel	ft²	$	$	$
Cistern	ft²	$	$	$
Drywell	ft²	$	$	$
Rain Garden	ft²	$	$	$
Planter Boxes	ft²	$	$	$
Foundation/Perimeter Drain	ft²	$	$	$
Trees	ft²	$	$	$
Amended Soil	ft²	$	$	$
Bio-Swales	ft²	$	$	$
Urban Farming/Gardening	ft²	$	$	$
Raised Bed	ft²	$	$	$
Vegetation Filter Strip	ft²	$	$	$
Native Vegetation	ft²	$	$	$
Parking Lot Swales	ft²	$	$	$
Roadside Swales	ft²	$	$	$
Permeable Patio	ft²	$	$	$
Permeable Parking	ft²	$	$	$
Permeable Sidewalks	ft²	$	$	$
Permeable Driveway	ft²	$	$	$
Permeable Streets	ft²	$	$	$
Pool, Water Features, etc. BMPs Total	ft²	$	$	$
Remaining Pool, Water Features, etc. area	ft²	$	$	$
Pool, Water Features, etc. with BMPs	ft²	$	$	$
Street	ft²	$	$	$
Green Roof	ft²	$	$	$
Rain Barrel	ft²	$	$	$
Cistern	ft²	$	$	$
Drywell	ft²	$	$	$
Rain Garden	ft²	$	$	$
Planter Boxes	ft²	$	$	$
Foundation/Perimeter Drain	ft²	$	$	$
Trees	ft²	$	$	$
Amended Soil	ft²	$	$	$
Bio-Swales	ft²	$	$	$
Urban Farming/Gardening	ft²	$	$	$
Raised Bed	ft²	$	$	$
Vegetation Filter Strip	ft²	$	$	$
Native Vegetation	ft²	$	$	$
Parking Lot Swales	ft²	$	$	$
Roadside Swales	ft²	$	$	$
Permeable Patio	ft²	$	$	$
Permeable Parking	ft²	$	$	$
Permeable Sidewalks	ft²	$	$	$
Permeable Driveway	ft²	$	$	$
Permeable Streets	ft²	$	$	$
Street BMPs Total	ft²	$	$	$
Remaining Street area	ft²	$	$	$
Street with BMPs	ft²	$	$	$
Lawn/Turf	ft²	$	$	$
Green Roof	ft²	$	$	$
Rain Barrel	ft²	$	$	$
Cistern	ft²	$	$	$
Drywell	ft²	$	$	$
Rain Garden	ft²	$	$	$
Planter Boxes	ft²	$	$	$
Foundation/Perimeter Drain	ft²	$	$	$
Trees	ft²	$	$	$
Amended Soil	ft²	$	$	$
Bio-Swales	ft²	$	$	$
Urban Farming/Gardening	ft²	$	$	$
Raised Bed	ft²	$	$	$
Vegetation Filter Strip	ft²	$	$	$
Native Vegetation	ft²	$	$	$
Parking Lot Swales	ft²	$	$	$
Roadside Swales	ft²	$	$	$
Permeable Patio	ft²	$	$	$
Permeable Parking	ft²	$	$	$
Permeable Sidewalks	ft²	$	$	$
Permeable Driveway	ft²	$	$	$
Permeable Streets	ft²	$	$	$
Lawn/Turf BMPs Total	ft²	$	$	$
Remaining Lawn/Turf area	ft²	$	$	$
Lawn/Turf with BMPs	ft²	$	$	$
Flower Bed/Garden	ft²	$	$	$
Green Roof	ft²	$	$	$
Rain Barrel	ft²	$	$	$
Cistern	ft²	$	$	$
Drywell	ft²	$	$	$
Rain Garden	ft²	$	$	$
Planter Boxes	ft²	$	$	$
Foundation/Perimeter Drain	ft²	$	$	$
Trees	ft²	$	$	$
Amended Soil	ft²	$	$	$
Bio-Swales	ft²	$	$	$
Urban Farming/Gardening	ft²	$	$	$
Raised Bed	ft²	$	$	$
Vegetation Filter Strip	ft²	$	$	$
Native Vegetation	ft²	$	$	$
Parking Lot Swales	ft²	$	$	$
Roadside Swales	ft²	$	$	$
Permeable Patio	ft²	$	$	$
Permeable Parking	ft²	$	$	$
Permeable Sidewalks	ft²	$	$	$
Permeable Driveway	ft²	$	$	$
Permeable Streets	ft²	$	$	$
Flower Bed/Garden BMPs Total	ft²	$	$	$
Remaining Flower Bed/Garden area	ft²	$	$	$
Flower Bed/Garden with BMPs	ft²	$	$	$
Vegetable Garden	ft²	$	$	$
Green Roof	ft²	$	$	$
Rain Barrel	ft²	$	$	$
Cistern	ft²	$	$	$
Drywell	ft²	$	$	$
Rain Garden	ft²	$	$	$
Planter Boxes	ft²	$	$	$
Foundation/Perimeter Drain	ft²	$	$	$
Trees	ft²	$	$	$
Amended Soil	ft²	$	$	$
Bio-Swales	ft²	$	$	$
Urban Farming/Gardening	ft²	$	$	$
Raised Bed	ft²	$	$	$
Vegetation Filter Strip	ft²	$	$	$
Native Vegetation	ft²	$	$	$
Parking Lot Swales	ft²	$	$	$
Roadside Swales	ft²	$	$	$
Permeable Patio	ft²	$	$	$
Permeable Parking	ft²	$	$	$
Permeable Sidewalks	ft²	$	$	$
Permeable Driveway	ft²	$	$	$
Permeable Streets	ft²	$	$	$
Vegetable Garden BMPs Total	ft²	$	$	$
Remaining Vegetable Garden area	ft²	$	$	$
Vegetable Garden with BMPs	ft²	$	$	$
Shrub and Bushes	ft²	$	$	$
Green Roof	ft²	$	$	$
Rain Barrel	ft²	$	$	$
Cistern	ft²	$	$	$
Drywell	ft²	$	$	$
Rain Garden	ft²	$	$	$
Planter Boxes	ft²	$	$	$
Foundation/Perimeter Drain	ft²	$	$	$
Trees	ft²	$	$	$
Amended Soil	ft²	$	$	$
Bio-Swales	ft²	$	$	$
Urban Farming/Gardening	ft²	$	$	$
Raised Bed	ft²	$	$	$
Vegetation Filter Strip	ft²	$	$	$
Native Vegetation	ft²	$	$	$
Parking Lot Swales	ft²	$	$	$
Roadside Swales	ft²	$	$	$
Permeable Patio	ft²	$	$	$
Permeable Parking	ft²	$	$	$
Permeable Sidewalks	ft²	$	$	$
Permeable Driveway	ft²	$	$	$
Permeable Streets	ft²	$	$	$
Shrub and Bushes BMPs Total	ft²	$	$	$
Remaining Shrub and Bushes area	ft²	$	$	$
Shrub and Bushes with BMPs	ft²	$	$	$
Raised deck	ft²	$	$	$
Green Roof	ft²	$	$	$
Rain Barrel	ft²	$	$	$
Cistern	ft²	$	$	$
Drywell	ft²	$	$	$
Rain Garden	ft²	$	$	$
Planter Boxes	ft²	$	$	$
Foundation/Perimeter Drain	ft²	$	$	$
Trees	ft²	$	$	$
Amended Soil	ft²	$	$	$
Bio-Swales	ft²	$	$	$
Urban Farming/Gardening	ft²	$	$	$
Raised Bed	ft²	$	$	$
Vegetation Filter Strip	ft²	$	$	$
Native Vegetation	ft²	$	$	$
Parking Lot Swales	ft²	$	$	$
Roadside Swales	ft²	$	$	$
Permeable Patio	ft²	$	$	$
Permeable Parking	ft²	$	$	$
Permeable Sidewalks	ft²	$	$	$
Permeable Driveway	ft²	$	$	$
Permeable Streets	ft²	$	$	$
Raised deck BMPs Total	ft²	$	$	$
Remaining Raised deck area	ft²	$	$	$
Raised deck with BMPs	ft²	$	$	$
Natural Open Area	ft²	$	$	$
Green Roof	ft²	$	$	$
Rain Barrel	ft²	$	$	$
Cistern	ft²	$	$	$
Drywell	ft²	$	$	$
Rain Garden	ft²	$	$	$
Planter Boxes	ft²	$	$	$
Foundation/Perimeter Drain	ft²	$	$	$
Trees	ft²	$	$	$
Amended Soil	ft²	$	$	$
Bio-Swales	ft²	$	$	$
Urban Farming/Gardening	ft²	$	$	$
Raised Bed	ft²	$	$	$
Vegetation Filter Strip	ft²	$	$	$
Native Vegetation	ft²	$	$	$
Parking Lot Swales	ft²	$	$	$
Roadside Swales	ft²	$	$	$
Permeable Patio	ft²	$	$	$
Permeable Parking	ft²	$	$	$
Permeable Sidewalks	ft²	$	$	$
Permeable Driveway	ft²	$	$	$
Permeable Streets	ft²	$	$	$
Natural Open Area BMPs Total	ft²	$	$	$
Remaining Natural Open Area area	ft²	$	$	$
Natural Open Area with BMPs	ft²	$	$	$
Natural Wetlands	ft²	$	$	$
Green Roof	ft²	$	$	$
Rain Barrel	ft²	$	$	$
Cistern	ft²	$	$	$
Drywell	ft²	$	$	$
Rain Garden	ft²	$	$	$
Planter Boxes	ft²	$	$	$
Foundation/Perimeter Drain	ft²	$	$	$
Trees	ft²	$	$	$
Amended Soil	ft²	$	$	$
Bio-Swales	ft²	$	$	$
Urban Farming/Gardening	ft²	$	$	$
Raised Bed	ft²	$	$	$
Vegetation Filter Strip	ft²	$	$	$
Native Vegetation	ft²	$	$	$
Parking Lot Swales	ft²	$	$	$
Roadside Swales	ft²	$	$	$
Permeable Patio	ft²	$	$	$
Permeable Parking	ft²	$	$	$
Permeable Sidewalks	ft²	$	$	$
Permeable Driveway	ft²	$	$	$
Permeable Streets	ft²	$	$	$
Natural Wetlands BMPs Total	ft²	$	$	$
Remaining Natural Wetlands area	ft²	$	$	$
Natural Wetlands with BMPs	ft²	$	$	$
Natural Water	ft²	$	$	$
Green Roof	ft²	$	$	$
Rain Barrel	ft²	$	$	$
Cistern	ft²	$	$	$
Drywell	ft²	$	$	$
Rain Garden	ft²	$	$	$
Planter Boxes	ft²	$	$	$
Foundation/Perimeter Drain	ft²	$	$	$
Trees	ft²	$	$	$
Amended Soil	ft²	$	$	$
Bio-Swales	ft²	$	$	$
Urban Farming/Gardening	ft²	$	$	$
Raised Bed	ft²	$	$	$
Vegetation Filter Strip	ft²	$	$	$
Native Vegetation	ft²	$	$	$
Parking Lot Swales	ft²	$	$	$
Roadside Swales	ft²	$	$	$
Permeable Patio	ft²	$	$	$
Permeable Parking	ft²	$	$	$
Permeable Sidewalks	ft²	$	$	$
Permeable Driveway	ft²	$	$	$
Permeable Streets	ft²	$	$	$
Natural Water BMPs Total	ft²	$	$	$
Remaining Natural Water area	ft²	$	$	$
Natural Water with BMPs	ft²	$	$	$
Other BMPs not replacing any specific area.
Green Roof	ft²	$	$	$
Rain Barrel	ft²	$	$	$
Cistern	ft²	$	$	$
Drywell	ft²	$	$	$
Rain Garden	ft²	$	$	$
Planter Boxes	ft²	$	$	$
Foundation/Perimeter Drain	ft²	$	$	$
Trees	ft²	$	$	$
Amended Soil	ft²	$	$	$
Bio-Swales	ft²	$	$	$
Urban Farming/Gardening	ft²	$	$	$
Raised Bed	ft²	$	$	$
Vegetation Filter Strip	ft²	$	$	$
Native Vegetation	ft²	$	$	$
Parking Lot Swales	ft²	$	$	$
Roadside Swales	ft²	$	$	$
Permeable Patio	ft²	$	$	$
Permeable Parking	ft²	$	$	$
Permeable Sidewalks	ft²	$	$	$
Permeable Driveway	ft²	$	$	$
Permeable Streets	ft²	$	$	$

Area	Construction Cost	Annual Maintance Cost	Typical Useful Life
Flat Roof ?	$ 4 per ft² \| edit	$ 0.14 /Year per ft² \| edit	20 Years \| edit
Pitched Roof ?	$ 4 per ft² \| edit	$ 0.14 /Year per ft² \| edit	20 Years \| edit
Sidewalk ?	$ 7.32 per ft² \| edit	$ 0.0193 /Year per ft² \| edit	40 Years \| edit
Patio, pool deck, etc. ?	$ 12.52 per ft² \| edit	$ 1 /Year per ft² \| edit	25 Years \| edit
Parking Surface ?	$ 3.05 per ft² \| edit	$ 0.93 /Year per ft² \| edit	15 Years \| edit
Driveway ?	$ 6 per ft² \| edit	$ 2.25 /Year per ft² \| edit	20 Years \| edit
Pool, Water Features, etc. ?	$ 72 per ft² \| edit	$ 7.65 /Year per ft² \| edit	25 Years \| edit
Street ?	$ 4.33 per ft² \| edit	$ 0.055 /Year per ft² \| edit	35 Years \| edit
Lawn/Turf ?	$ 0.7 per ft² \| edit	$ 0.12 /Year per ft² \| edit	12.5 Years \| edit
Flower Bed/Garden ?	$ 0.7 per ft² \| edit	$ 0.12 /Year per ft² \| edit	12.5 Years \| edit
Vegetable Garden ?	$ 0.7 per ft² \| edit	$ 0.12 /Year per ft² \| edit	12.5 Years \| edit
Shrub and Bushes ?	$ 0.7 per ft² \| edit	$ 0.12 /Year per ft² \| edit	12.5 Years \| edit
Raised deck ?	$ 15 per ft² \| edit	$ 1.5 /Year per ft² \| edit	15 Years \| edit
Natural Open Area ?	$ 0 per ft² \| edit	$ 0 /Year per ft² \| edit	100 Years \| edit
Natural Wetlands ?	$ 1.4 per ft² \| edit	$ 0.03 /Year per ft² \| edit	20 Years \| edit
Natural Water ?	$ 0 per ft² \| edit	$ 0 /Year per ft² \| edit	100 Years \| edit

Land Use	Original Area	Area including BMP(s)
Total Impervious Area	0 ft²	0 ft²
Total Landscape Area	0 ft²	0 ft²
Total BMP Area		0 ft²
Total Lot Area	0 ft²	0 ft²
Other Volume Control		0 gallons

Runoff	Without BMPs	With BMPs	Difference
Average Annual Rainfall: " Rain
Runoff	"	"	%
Runoff Volume	ft³ gal.	ft³ gal.	ft³ gal.
Average Storm Rainfall: " Rain
Runoff	"	"	%
Runoff Volume	ft³ gal.	ft³ gal.	ft³ gal.

Hydrology	Without BMPs	With BMPs	Difference
Average Initial Abstractions Rainfall: " Rain
Initial Abstractions	"	"	%
Initial Abstractions Volume	ft³ gal.	ft³ gal.	ft³ gal.
Average Cumulative Abstractions
Cumulative Abstractions	"	"	%
Cumulative Abstractions Volume	ft³ gal.	ft³ gal.	ft³ gal.
Curve Number

Financial Benefit	Annual Benefits	Life Cycle Benefits (NPV)
Owner Total	$0	$0
Reduced Energy Use from Trees	$	$
Reduced Energy Use from Green Roof	$	$
Community Total	$0	$0
Reduced Air Pollutants from Trees	$	$
Carbon Dioxide Sequestration from Trees	$	$
Compensatory Value of Trees	$	$
Groundwater Replenishment	$	$
Reduced Treatment benefits	$	$
Total	$0	$0

Real Estate Benefit

Effect of GSI Installations on Home Sales Price

Evaluate benefits of green infrastructure to prevent urban flooding.

Compare the performance, costs, and benefits of Green Infrastructure to conventional stormwater practices.

Start from a template or design a custom scenario.

Urban Home

Apartment

Suburban

Commercial

Urban Park Area

Community Garden

Urban Farm

Urban School Grounds

Custom Scenario

Where do you plan to add green infrastructure?

lot area:

impervious areas:

landscape areas:

How many properties are based on the characteristics above?

Enter a location for local rainfall data:

Rainfall data for:

Volume Capacity Capture Goal

Budget (optional)

Flooding Costs (optional)

Roof Water Capture

Roof Water Redirection

Landscaping

Directing Runoff

Permeable Paving

Cost Details

You have a Problem!

Volume Capacity Capture Goal

Total Land Use

Land Use

Volume Control

Runoff and Hydrology

Cost Summary

Benefits

Increased Real Estate Value?

Additional Benefits

Value From	Existence	Area
Rain Gardens, Swales, Planters, Etc.	%	%
Wetland, Trenches, Basins	%	%
Permeable Paving	%	%
Green Roof, Rain Barrel, Cistern, Etc.	%	%
Trees	%	%
Total	0%	0%

Advanced Settings

Rainfall Data

Financial Costs

Curve Numbers

Real Estate Benefit

Effect of GSI Installations on Home Sales Price

Cost Assumptions

Construction Costs

Annual Maintenance Costs

Component Lifespan

Evaluate benefits of green infrastructure to prevent urban flooding.

Compare the performance, costs, and benefits of Green Infrastructure to conventional stormwater practices.

Start from a template or design a custom scenario.

Urban Home

Apartment

Suburban

Commercial

Urban Park Area

Community Garden

Urban Farm

Urban School Grounds

Custom Scenario

Where do you plan to add green infrastructure?

lot area:

impervious areas:

landscape areas:

How many properties are based on the characteristics above?

Enter a location for local rainfall data:

Rainfall data for:

Volume Capacity Capture Goal

Budget (optional)

Flooding Costs (optional)

Roof Water Capture

Roof Water Redirection

Landscaping

Directing Runoff

Permeable Paving

Cost Details

You have a Problem!

Volume Capacity Capture Goal

Total Land Use

Land Use

Volume Control

Runoff and Hydrology

Cost Summary

Benefits

Increased Real Estate Value?

Additional Benefits