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North America
AcresofCrops

Click through the interactive spreadsheets to see how phosphorous loading in the Great Lakes region has changed in the last decade and how these trends relate to changes in cropping patterns since the 1950s and land use patterns since the 1980s.

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MaumeeSanduskyGraphic-web-1000

A breakdown of the different types of phosphorous in Ohio’s Maumee and Sandusky rivers that have led to algal blooms in Lake Erie since the 1970s.

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Animation Screenshot

University of Michigan study provides online video scenarios of fast and expansive movement of oil in two Great Lakes.

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breaking point

Completed in 1935, Hoover Dam supplies electricity to 29 million people in Arizona, California and Nevada.

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banner-Rousseau_UpperColoRiver_34

Along the 1,800-mile river basin,locals wrestle with water demands.

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©JGanter_LakeMead_G3_1102-1000

Despite drying conditions, four states plan additional water projects.

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ppt3

When layered, maps of annual precipitation in Texas and Kansas show the stark moisture division in the United States between the wet East and the dry West running through the Great Plains.

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ogallala-map-three

Click through the interactive Google Fusion Tables infographic to see how planting trends have been affected by time, as well as how irrigated acreage has changed over the last two decades.

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ogallala-map-two

Click through the interactive Google Fusion Tables infographic to see how water use has changed over the last two decades, as well as how these trends relate to fluctuation of groundwater tables within the Ogallala Aquifer since the 1940s.

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Hydro Resources, a well-drilling contractor, works around the clock to punch new holes in the Ogallala Aquifer in Kansas. The Ogallala, the primary water source in the Great Plains, is declining because billions of gallons are pumped out each year to irrigate corn, soybeans, wheat, and cotton.

A plan to reduce water use by 20 percent was voted down last week.

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A golden circle, this one near Edson, Kansas, is the tell-tale sign of an irrigated corn field ready for harvest. Farmers in the Great Plains produce some of the highest corn yields in the world thanks in part to abundant water supplies from the Ogallala Aquifer. The aquifer, however, is draining away because more water is pumped out than filters back in.

Using less water for agriculture is an idea spreading across the Great Plains.

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Texas drought Dust Bowl agriculture Great Plains

Strong winds and dry soils are a frightful combination.

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drought-history

The current three-year dry cycle is the state’s worst ever.

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ca-drought-map

One of the world’s largest canal systems moves billions of gallons of water to where it does not naturally flow.

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ogallala-banner-drought

Rainfall deficit is worse than the 1930s Dust Bowl.

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ExtremeRain

The Southwest is drying out, while the Northeast is becoming wetter.

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video-tutorial

Watch this tutorial to learn how to use Circle of Blue’s Google Fusion Tables maps that show changes in California’s water use over the last two decades and how these trends relate to population demographics and water contamination from arsenic.

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live-historic-data

Watch this short tutorial to learn how to use Qlikview’s tool that was endorsed by the White House Climate Initiative.

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arsenic-map

Click through the interactive Google Fusion Tables infographic to see how water pollution in California’s Central Valley has changed in the last decade and how these trends relate to population demographics.

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banner-water-use

Click through the interactive Google Fusion Tables infographic to see how California’s water use has changed over the last two decades and how these trends relate to population demographics and water contamination.

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