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Notes on the Geography of The Western United States: The Great Plains: Photo 10

world pictures The Western United States: The Great Plains

A more expensive solution: center-pivot irrigation, here at the pivot. Note the drop-line sprinkler, that thin pipe hanging down at the right. It's more efficient than heroic, high-pressure sprinklers. Note, too, that very little water comes from it, because this end moves slowly. Out on the other end, the discharge per minute is much greater. In the background, you can see the electric pump that mines water (that's the correct word: "mines") from the Ogallala formation and pushes it through the sprinkler.

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