The first wells were drilled into the Ogallala during the drought years of the early 1930s.

在奥加拉拉钻的第一口井是在20世纪30年代早期的干旱年代。

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This aquifer was named the Ogallala aquifer after the Ogallala Sioux Indians, who once inhabited the region.

这个含水层被命名为奥加拉拉含水层，以曾经居住在这个地区的奥加拉拉-苏族印第安人的名字命名。

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The Ogallala aquifer is a sandstone formation that underlies some 583,000 square kilometers of land extending from northwestern Texas to southern South Dakota.

奥加拉拉含水层是一个砂岩地层，位于从德克萨斯州西北部延伸到南达科他州南部，约583000平方公里土地的地下。

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The Ogallala aquifer is a major source of drinking and irrigation water for America's central plains.

VOA: special.2011.07.08

Ms.Casey-Lefkowitz says it would carry the oil more than three thousand kilometers, crossing the central United States -- and the Ogallala -- for processing in Texas.

VOA: special.2011.07.08

It shouldn't be best practices to have spills in the Kalamazoo River in Michigan, in the Yellowstone River in Montana and potentially in the future in the Ogallala aquifer which would be crossed by this new proposed Keystone XL pipeline."

VOA: special.2011.07.08

Thousands of miles of pipelines run over the Ogallala aquifer, which cannot be replaced or cleaned-up.

FORBES: It's Crazy To Think Keystone XL Won't Leak

Our ability to grow more food than any nation on Earth depends on the Ogallala.

FORBES: Energy And The Election

In the United States, the biggest source of potable water is the Ogallala Aquifer.

FORBES: Energy And The Election