Doug is a registered civil engineer (MS P.E. 08360) specializing in hydraulics, geomorphology, water quality and restoration of freshwater aquatic and riparian habitats.

He has over 40 years of experience on a wide variety of projects involving stream habitat restoration, water quality, stream ecology, and protection of cultural resources.

He is an international leader in river restoration research and practice. Areas of special interest include 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. He has worked on research or consulting projects in all major regions of the Continental US, with primary experience in the Southeast.

Doug has authored or co-authored more than 300 technical publications and has made more than 100 technical presentations.