Erica Gies is a Bay Area native, a National Geographic Explorer, an independent environmental journalist, and the author, most recently, of “Water Always Wins: Thriving in an Age of Drought and Deluge.” Gies details how we have over-engineered and mechanized water delivery in California. She explains how both our agriculture and our built environment have done almost irreparable damage to the future of our water supply. Based on her observations around the world, she tells us about “slow water” and offers some solutions and limited hope for the future.