Ogallala Aquifer · All Facts

Ogallala Aquifer
Nebraska's Ogallala Aquifer underlies much of the state and is one of the world's largest underground freshwater sources, containing an estimated <hl>3 billion acre-feet of water</hl> — enough to cover the entire US in 1.5 feet of water.
SrcUSGS

Next evidence →YellowstoneWyoming's Yellowstone, established in 1872, was the world's first national park. The state has the smallest population of any US state — roughly 580,000 people — fewer than many individual US cities.

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YellowstoneWyoming's Yellowstone, established in 1872, was the world's first national park. The state has the smallest population of any US state — roughly 580,000 people — fewer than many individual US cities.
Independence HallPennsylvania's Independence Hall in Philadelphia is where both the Declaration of Independence (1776) and the US Constitution (1787) were debated and signed — making it the only building where both founding documents were created.
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