This ARB system installation collected stormwater from an estimated 28 m 2 (350 sq. ft.) of roof area. The overflow and bypass drains into a customized front-yard rain garden. During the 3.5-month data collection period—the dry summer months of 2016—the homeowners relied heavily on the 6,000 L of free clean water collected to irrigate their landscaped garden.
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Case Study: Withrow Ave (PDF)