Dr. Doug Shields is a hydraulic engineer with interests in backwater management, large wood, effects of vegetation on levee reliability, response of fluvial systems to disturbance, impacts of agriculture on water quality, and environmental design criteria for river engineering. Current work includes nutrient regulation by river backwaters, assessment of reservoir operational protocols on flood risk, impacts of flood control and pipeline project on river corridor habitats, He has over 43 years’ experience, having participated or led research and consulting projects in all major regions of the Continental US, with primary experience in the Southeast. He has also participated in research symposia in Japan, South Korea, Taiwan, Germany, the U.K., and the Czech Republic. Doug is a registered civil engineer (MS P.E. 08360), a diplomat of the American Academy of Water Resources Engineers, a Fellow of the American Society of Civil Engineers and a Fellow of the Environmental and Water Resources Engineering Institute.