Located in the Sonoran Desert, NOLS Southwest receives an average rainfall of 3-16 inches per year. Rainwater harvesting made human settlement in southern Arizona possible as far back as 3,500 years ago. But to compensate for the arid environment today, the Central Arizona Project pumps Colorado River water over 300 miles to Tucson via a pipeline. This unsustainable source currently makes up more than a third of Tucson’s water supply.
At NOLS Southwest, and the city of Tucson in general, we're making strides implementing innovative smart water practices in order to take advantage of the rainfall we do get and secure a more sustainable water supply.Read More