Associated Press January 14, 2017
SUFFOLK, Va. (AP) — As a tool against sea-level rise, the idea seems a little counterintuitive: Add water to the ground.
But the laws of physics support it: Pump millions of gallons into a sandy aquifer deep below the Earth's surface, and its porous layers will expand like a sponge. The ground above it will rise, fortifying at least some of the land against the ocean's reach.
For decades, geologists have known that extracting large amounts of water can cause the ground to sink over time, sometimes by dozens of feet in places like California. Pumping it back in has slowed this subsidence and even slightly boosted ground levels in other places, experts say.