This is a summary of presentations made at the 2011 Western States’ Evapotranspiration workshop held in Boise, Idaho on October 12th and 13th. This report is structured in a way to describe the presentations as a function of the stated workshop objectives, without reference to specific authors. The workshop agenda is listed in Appendix A. The PowerPoint presentations used by each presenter can be accessed on the Web at http://www.westernstatesetworkshop.com/past-events/boise-2011. Those PowerPoint presentations were the basis of this report and. In some cases it was necessary to add text not included by the authors. Water managers and users have a tremendous need for more and better information about consumptive water use.. Remote sensing of evapotranspiration (ET) is a powerful, emerging tool that enables water-resource managers to quantify and map ET with unprecedented detail. The 2011 Western States’ Workshop on Remote Sensing of Evapotranspiration was a follow-on to the NASA/USDA Conference on remote sensing of ET held in Silver Spring, MD in April, 2011. That workshop was focused on research and climate-related issues for ET.