. During droughts, water for irrigation is pumped from the
ground. When ground water is pumped excessively, the water table
lowers. In California, lowering water tables have been linked to
reduced water quality and sinkholes. A particular well in
California’s Inland Empire has been monitored over many years. In
1994, the water level was 250 feet below the land surface. In 2000,
the water level was 261 feet below the surface. In 2006, the water
level was 268 feet below...