World Water Day, which takes place on March 22 every year, was created by the United Nations in 1993 in order to raise awareness about the world’s water crisis and what can be done to tackle it. It offers a great opportunity to think about what water means in your life and to contribute to a global conversation. If you’re fortunate, you live in a country where you don’t have to consider whether water is both available and safe to use. To honor this World Water Day I’m reblogging this post from May 22, 2011. — kenne
Tucson Basin — Image by kenne
The Tucson groundwater recharge basin is located west of Tucson, which uses the natural basin located between two north-south mountain ranges on the Hohokam Indian Reservation. Most of the water used in the Tucson area comes from the ground and is now recharged by water from the Colorado River.
West of Tucson, in the Central Avra Valley’s natural basin, 11 recharge basins have been dug into the sandy ground. On any given day, at least some of them will be sparkling with deep blue water. Tucson sits atop an enormous reserve of groundwater, so the water in these basins flows down to “recharge” the underground aquifer. However, area water needs consume more than the annual rainfall provides to recharge the basin. The city turned to the Colorado River several hundred miles away in its search for more water. For $4 billion, Tucson helped build…
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