Rivers are conduits for transport of fresh water, sediment and nutrients throughout the landscape. Humans manage rivers for water supply, power generation, flood control and navigation. These needs often conflict with ecological functions of rivers, such fish migration. My research focuses on understanding how rivers respond to changes, ranging from long-term variations in tectonics or climate to short-term shifts in dam function or land use. I link measurements of channel morphology from high-resolution airborne lidar digital elevation models with field-based measurements of stream processes.
CURRENT GRADUATE STUDENTS AND PROJECTS
- Sarah Jonathan: Developing chronologies of mass accumulation rates in thirteen Vermont and New York lakes
- Megan Kopp
- James LeNoir: Post-glacial sedimentation in Ossipee Lake, New Hampshire: Land use versus climate change
- Xinyi Zeng: The influence of dams on the sediment supply from the Parker River watershed to the Plum Island Sound estuary
RECENT GRADUATE STUDENTS
- Alan Burton Spaetzel: Investigating uncertainty of phosphorus loading estimation in the Charles River watershed, eastern Massachusetts (2018)
- Elisabeth Ames: A comparison of land-use and glacial controls on erosion in the northeastern United States (2018)
- Samantha Dow: Measuring 20th century fluvial response to 18-19th century anthropogenic activity using two generations of damming in the South River, western Massachusetts (2018)
- Kaitlin Johnson: Quantifying milldam legacy sediment storage in valley bottoms of two New England watersheds (2017)
RECENT PUBLICATIONS ( * = Boston College student coauthors)
- Johnson, K.M.*, Snyder, N.P., Castle, S.*, Hopkins, A.J.*, Waltner, M.*, Merritts, D.J., and Walter, R.C., 2019, Legacy sediment storage in New England river valleys: Anthropogenic processes in a postglacial landscape, Geomorphology, v. 327, p. 417-437, doi: 10.1016/j.geomorph.2018.11.017.
- Lisius, G.L.*, Snyder, N.P., and Collins, M.J., 2018, Vegetation community response to hydrologic and geomorphic changes following dam removal, River Research and Applications, v. 34, n. 4, p. 317-327, doi: 10.1002/rra.3261.
- Collins, M.J., Snyder, N.P., Boardman, G., Banks, W.S.L., Andrews, M., Baker, M.E., Conlon, M.*, Gellis, A., McClain, S., Miller, A., and Wilcock, P., 2017, Channel response to sediment release: insights from a paired analysis of dam removal, Earth Surface Processes and Landforms, v. 42, p. 1636-1651, doi: 10.1002/esp.4108.
- Hopkins, A.J.*, and Snyder, N.P., 2016, Performance evaluation of three DEM-based fluvial terrace mapping methods, Earth Surface Processes and Landforms, v. 41, n. 8, p. 1144-1152, doi: 10.1002/esp.3922.