Three Low-Pro's were installed in San Antonio area. The interesting feature about this project is the collection roof layout to maximize rainwater collection. Due to the rocky terraine, this is an area where an above-ground guzzler is most proctical.
The total surface area for collection is about 181 sq ft. (guzzler 37 sq ft, roof 144 sq ft) This will result in 113 gallons of water per 1" of rain.
Photos courtesy of Clayton Huebner, Texas