“People are amazed when they find out how much rainwater they can capture from their roof tops,” said Landscape Architect Bobby Markowitz at a March 15 presentation at the Museum of Art and History in Santa Cruz. A house with a 2,000 square-foot roof can capture 29,900 gallons of water during an average rain year (24 inches). That’s more than a third of the annual water consumed by a typical household (average 226 gallons per day), according to the City of Santa Cruz Water Department website.