In this report, the University of Arizona Water Resources Research Center provides complementary information to these studies in the form of a descriptive look at environmental enhancement projects throughout the State of Arizona. The report examines the more subjective aspects of environmental enhancement projects. At the outset of the project we sought to answer a series of questions: Who are the key players in the implementation of environmental enhancement projects and what factors drive the project's undertaking? What are the benefits of these projects? How are these projects using scarce water resources? Do they have legal claim to these water sources? And how long will supplementary water be required? Along with answers to these questions, we sought lessons learned both through the specific projects and from the wider lens of the 30 projects taken as a whole.