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Land + Water - Cisterns
Plant Material
 Greenroof
The 10,000 sf roof of the warehouse sheds its rain water into a double cistern located in the truck yard. Two galvanized tanks make up the cistern — a 6 foot diameter tank next to the warehouse and an eighteen foot diameter tank across the entry drive. They are connected below ground to create a single 31,500 gallon reservoir, about a month’s worth of summer precipitation.
This water is used primarily to irrigate plant stock and most of the outdoor spigots are connected to this system. A pump and pressure tank make the system operate just like pressurized city water. What happens if there isn’t enough rain? A float in the cistern will refill the tank with city water up to a one foot depth so water will be consistently available, but there is always room for the next big rain.