This story is part of Flipping the Switch , KQED’s series about California’s transition to clean energy and what it means for you. What works? What doesn’t? And how much does it cost? Driving from Los Angeles to San Francisco , Jordan Harris saw the concrete canals that transport water across the state slowly evaporating under the scorching West Coast sun. Harris said he spent a lot of his life in France, where he noticed how trees lined the canals and protected their precious water from the wind and sun. “And so I started thinking, could we do something similar in California?” California’s extensive network of canals and aqueducts is the lifeblood of the state, providing clean water to populous cities and expansive farms that wouldn’t otherwise have it. While the state has long struggled with evaporation, researchers at UC Davis estimate that California’s total water supply could shrink by up to 25% by 2050, the equivalent of two Lake Shastas.…