What were typical reductions in urban water use during the last drought?
In 1991, the driest single year of the last drought, large urban water agencies used measures such as voluntary conservation, mandatory rationing, and extensive education and outreach programs to achieve 20% – 30% water reductions.

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1. What is a drought?
2. What differentiates a normal rainfall year from a dry year?
3. What were typical reductions in urban water use during the last drought?
4. When was California’s last major drought?
5. How do droughts affect groundwater use?