PG&E suggests that you shut off your gas and electricity during major flooding, if you know how to do so safely. This action can prevent damage to the gas and electrical equipment in your home.
Follow these guidelines to turn off your home’s gas safely:
Turn off the electric supply to the entire household at the main electric switch. Never touch the electric switch or circuit breaker with wet hands or while standing in water. Learn more about turning your electricity on and off. Visit Turning Your Electricity On and Off.