NICASIO, CALIFORNIA – MAY 28: Dry cracked earth is visible as water levels are low at Nicasio Reservoir on May 28, 2021 in Nicasio, California. Marin County is under mandatory water-use restrictions that orders residents to refrain from washing cars at home, refilling pools and watering lawns once a week. According to the U.S. Drought Monitor, 16% of California is in exceptional drought, the most severe level of dryness. (Photo by Justin Sullivan/Getty Images)