Charlie Hebson is Manager of the Surface Water Resources Division in the MaineDOT Environmental Office. He holds a Ph.D. in Hydrology/Water Resources (Civil Engineering) from Princeton University and an Sc.B. (Civil Engineering) from Brown University. His responsibilities include hydrology and hydraulics for transportation design, special projects with significant water-related environmental issues, and special emphasis on field evaluations and design for fish passage. Charlie also provides technical support to ongoing policy developments related to fish passage and stormwater as well as development of technical guidance materials for hydrology, hydraulics, and fish passage design. The Surface Water Resources Division includes 2 engineers, 2 hydrologists, 1 environmental specialist, and 2 field technicians. Prior to joining MaineDOT in 2001, Charlie worked in consulting and for the USDA-ARS and USGS.