Tracking the California Drought

Californians are living in the state’s driest period on record. Officials have urged people to conserve as reservoirs run low and demand exceeds a supply stressed by climate change.

A large share of the state’s water is used for agriculture, and growers have seen water deliveries slashed during the drought. State regulators track water use in cities and towns across the state, collecting monthly data from more than 400 urban suppliers that serve about 37.2 million Californians.