The Ogallala -- or High Plains -- Aquifer is one of the largest aquifers in the world, supplying about 30 percent of all the ground water drawn in the United States. It supports an istimate 12.7 million acres of irrigated land in eight states, including Kansas. But some parts of the aquifer are running out of water. Harvest Public Media's Eric Durban brings us this audio postcard from a drilling site in southwest Kansas where researchers are seeking a better understanding of how the aquifer works.
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