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A 2,800 gallon rain tank with a debris screen collects and stores rain water from a nearby building roof. During the dry season, the water is pumped through a drip irrigation system to water the surrounding landscape.
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Stacked open-celled crates under weed cloth capture storm water in the rain garden and allow it to soak into the ground instead of running off into the street.
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Grasses in the rain garden can withstand both periods of flooding and dry spells.
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The 2,800 gallon rain tank overflows into the rain garden when full.
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Drip irrigation lines are laid down and emitters are placed near the plants before a layer of mulch is spread on top.
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Rain garden excavation
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When it rains, the 4,300 square foot roof drains into the rain tank . When the rain tank is full, it overflows into the rain garden lined with drain rock and slowly seeps into the ground.
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Pittosporum was planted to screen the cistern and protect it from direct sunlight.
