Tohono Chul Sin Aguas Garden passive water-harvesting demonstration
This is a water-harvesting demonstration garden within the larger Tohono Chul Gardens. Gravity distributes parking lot and roof runoff to an irrigation ditch with gates that control which vegetated basins receive the runoff.
The Sin Aguas Garden is planted within water-harvesting earthworks that capture stormwater runoff from a parking lot on the east end of the Park. This can provide all the needed water for appropriate dryland crops/plantings. But here, perhaps to maintain a lush appearance even in dry times and drought, plantings are also supplementary irrigated with a drip irrigation system hooked up to municipal water supply.
The water-harvesting earthworks of the Tohono Chul Sin Aguas Garden was designed by Russ Buhrow, who in the 1980s farmed a productive 1-acre farm irrigated solely with passively harvested rainwater and stormwater from an apartment complex roof, parking lot, and city street.
For more information on the Sin Aguas Garden see:
7366 N Paseo Del Norte, Tucson, AZ 85704
Hours: 8am – 5pm daily
Cost: Adult $15, children (age 5-12) $6 (under 5) free
This location is included in the following tours:
See the new, full-color, revised editions of Brad’s award-winning books
– available a deep discount, direct from Brad:
THE book to get you started. Shows you how to assess your free on-site waters, then create an integrated plan to harvest them.
Easy calculations provided to estimate the volume of your free on-site waters, plus a plant appendix with simple calculations to estimate the water needs of your plants, so you can set up systems whereby your plants can be irrigated solely by free on-site waters once established.
This book gives you step-by-step instructions for multiple types of water-harvesting earthworks or rain gardens for a diverse array of different contexts.
Also has a chapter devoted to how to create gravity-fed greywater harvesting systems, and an appendix on how to harvest your dark greywater (kitchen sink drain water).