Lawrence J. MacDonnell, J.D., Ph.D., is an attorney and consultant in Boulder, Colorado, who recently retired from the University of Wyoming College of Law where he taught water law, public land law, and natural resources law. Having served as the first director of the Natural Resources Law Center at the University of Colorado School of Law from 1983 to 1994, between 1995 and 2009 he worked as an attorney and consultant focusing primarily on water resources and ways to make natural resource development more environmentally compatible. His publications include numerous books, law review articles, journal articles, and research reports. In addition, he has given more than 250 invited presentations.