Improving water-use efficiency remains a challenge for U.S. irrigated agriculture
U.S. agriculture accounts for 80-90 percent of the Nation’s consumptive water use (water lost to the environment by evaporation, crop transpiration, or incorporation into products). The 17 Western States account for nearly three-quarters of U.S. irrigated agriculture. While substantial technological innovation has already occurred in irrigation systems, significant room for improvement in farm irrigation efficiency still exists. Between 1994 and 2008, the combined share of Western irrigated acres using improved gravity-flow and low-pressure sprinkler systems has increased but the rate at which traditional irrigation systems have been replaced with more efficient, improved systems has slowed over the past decade. This chart comes from the Amber Waves September 2012 finding, Improving Water-Use Efficiency Remains a Challenge for U.S. Irrigated Agriculture.