A year ago, when stay-at-home orders were a newly disorienting fact of life, I started taking long walks through my neighborhood on L.A.’s Westside. Wandering south from Palms into Culver City, I realized I live near a huge concrete channel — a creek, trapped in place — with a bike path along the water, and a view of oil pumpjacks rising and falling atop the Baldwin Hills. There were beautiful murals, too, showing a healthy, thriving waterway. They were hashtagged #KnowYourWatershed. And the more I admired them, the more I realized that I did not, in fact, know my watershed, despite growing up not far from here.