Discover how a research group at Franklin and Marshall College in Lancaster are advancing our understanding of our waterways.
After two decades of studying impaired waterways and the impact of geologically recent ice age climates and conditions on landscapes in the mid-Atlantic region, this research group established the Chesapeake Watershed Initiative in 2020 to deepen understanding of the recent geologic history of regional landscapes, the legacies of human impacts on riparian-aquatic ecosystems, and the effectiveness of transformative restoration efforts to improve water quality and ecosystem health.
This approach uses multiple advanced monitoring tools and connects landscape history and trajectories to current place-based restoration and applies to many human-impacted geographies worldwide.
Learn how investigating Earth's past helps envision the potential for restoration and guide restoration approaches, including the removal of historic "legacy" sediment upstream of former mill dams.
Find out more about Dr. Walter here and about Dr. Merritts here.
The dinner-presentation-discussion will be held at the RiverKeeper Office, 338 S. Front Street in Wrightsville, York County from 6:00 to 8:00 p.m.
Click Here for tickets and for more information.
Visit the Lower Susquehanna RiverKeeper website to learn more about programs, initiatives, upcoming events and how you can get involved.
Resource Links:
-- Mark Gutshall, LandStudies Talks About Legacy Sediments [Video]
-- Chesapeake Bay Journal - Donna Morelli: Removing Legacy Sediment Reduces Runoff Pollution, Restores Habitat
-- Chesapeake Bay Journal - Ad Crable: Legacy Sediment Behind Old Mill Dams Could Help Heal Abandoned Mine Land
-- Franklin & Marshall Professors Announce Legacy Sediments Article In Science
[Posted: March 18, 2026] PA Environment Digest
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