Rain Garden
Ulumalu Street

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Before: Previously, the rain water would just run from the roof/downspout and down the driveway into the street. Additionally, wedelia (an invasive weed) was taking over the area adjacent to the driveway.

After: This area is much nicer now with the addition of the rain garden, and the homeowner even added some nice solar lights along the side of the rain garden.

Brief description of rain garden:
Two tiered rain garden running the length of  the driveway capturing stormwater from the roof and watering a beautiful rain garden instead of running off the driveway into the street.  This is a unique design for a rain garden, but it turned out looking really nice and is a great solution for many homeowners that have narrow areas running along their driveways.

Date installed:
February 21, 2014

Property type:
Residential

Rain garden is capturing water from which impervious surface?
Roof

Approximate square footage of impervious surface the rain garden is treating:
737

Approximate square footage of rain garden:
90

Describe how the water is routed to the rain garden:
Down spout was re-routed and buried under the concrete walkway (required concrete cutting and back filling)

Pre-build infiltration rate (in/hour):
3

Did you amend your soil to increase permeability?
Yes

If yes, what did you use to amend the soil?
Mulch and compost

List some of the plants used in the rain garden:
Carex, pohinahina, kalo, aeae, kupukupu, pauohiiaka, hibiscus