Archive for Category: "Water supply"
Scarcity of freshwater is a defining feature of the American West, and planet Earth. Nearly 97% of the world’s H2O is in the oceans. More than two-thirds of the globe’s freshwater is frozen in glaciers and polar ice caps. Below are a trio of graphics to visualize water on Earth. I’ve found these slides useful […]
The elevations of Lake Powell and Lake Mead, two critical reservoirs on the Colorado River, are like the Dow and S&P 500 for water in the Southwest. These closely watched metrics serve as simple barometers and summaries of how things are going in a fiendishly complex system, be it the U.S. economy or a watershed […]
The World Resources Institute has developed Aqueduct, an interactive mapping tool that offers a fascinating look at water-related risks and stresses, including projected impacts due to climate change. Using global data donated by Coca-Cola, one of several heavyweight corporate partners (Goldman Sachs and General Electric founded the Aqueduct Alliance), WRI has analyzed and visualized a […]
The Colorado River, lifeblood of the Southwest, is in trouble. Demand for river water is rising as the region’s population continues to grow, but the Colorado’s inherently capricious supply is increasingly in doubt due to climate change. A federal report released in December took an exhaustive look at the challenges facing the Colorado River Basin […]
Americans use an average of 410 billion gallons of water per day. Where does all that water come from and where does it go? Flow diagrams from the Lawrence Livermore National Laboratory provide excellent summaries of the nation’s water use. These graphics, also known as Sankey diagrams, show how much we pump from groundwater aquifers, […]
In the West and around the nation, the price of water keeps going up. Since 2010, Circle of Blue has been gathering water rate data in the 20 largest U.S. cities, plus 10 regionally representative cities. From 2011 to 2012, single-family residential water prices rose an average of 7.3 percent; since 2010, the increase is […]