Funded by grants from the Richard King Mellon Foundation and The Steinman Foundation, the interdisciplinary Chesapeake Watershed Initiative (CWI) studies the legacy of human impacts on floodplains within the Chesapeake Watershed and applies its findings through targeted action focused in Lancaster County, PA. The CWI, housed at local Franklin & Marshall College, aims to understand the effects of colonial settlement, dam construction, dam removal, and restoration. The Initiative interacts with a wide variety of disciplines including history, hydrology, earth science, communications, politics, and economics to understand the complex relationship between our society and the Chesapeake Watershed. The CWI carries out its mission through a three-fold approach of research, education, and action.
The following articles, published on the Franklin & Marshall College website, demonstrate the excellent recent work of CWI students and faculty!
A recent transformative $2.1 million gift to Franklin & Marshall College from an anonymous donor establishes the Distinguished Professorship of Geosciences in the Department of Earth & Environment in perpetuity in honor of CWI Principal Investigator Robert C. Walter, Ph.D. ’75 and creates the Earth & Environment Instrument Support Endowment. The gift shines a light on the prolific career of Walter, whose expertise in geochemistry, geochronology, and hydrogeology has not only advanced the field but also shaped the lives of generations of F&M students.
Under the guidance of CWI Principal Investigator Patrick Fleming last summer, seniors Nancy Nguyen ’26 and Vu Nguyen ’26 used AI as a preliminary expert to gauge the influence of six water-quality indicators on children's health, fish health and flood risk. The six key indicators - nitrogen, phosphorus, turbidity, E. coli, water temperature, and water discharge - are a part of CWI’s ongoing stream monitoring efforts.
Last summer, F&M seniors Roselyn Ovalles ’26 and Grace Uwezukwe ’26 interned with the Lower Susquehanna Riverkeeper Association, a CWI partner organization. The two were tasked with community engagement and monitoring bacteria levels at 22 sites along the Susquehanna River and its local tributaries, including the Little Conestoga Creek (pictured). Alongside CWI's ongoing monitoring efforts, this work is a crucial puzzle piece of tracking changing water quality along the Blue Green Connector (BGC) project restorations, to be displayed on our upcoming BGC online water quality dashboard.
After immense storm events hit Lancaster County in June 2026, PI Dorothy Merritts spoke on the WGAL 8 local news to explain how floodplain wetland restorations can help slow and reduce the impacts of floodwaters on local communities.
From our team
Professor Robert Walter
Dr. Adam Benfield
Douglas Rosa '25
From our collaborators
Anthropocene Science: What Next? II Poster
Anthropocene Science: What Next? I eLightning
Anthropogenic Choke Points Amplify Biogeochemical Hotspots Along Terrestrial-Aquatic Interfaces
"Each year, AGU’s annual meeting, the largest gathering of Earth and space scientists, convenes 25,000+ attendees from 100+ countries to share research and connect with friends and colleagues. Scientists, educators, policymakers, journalists and communicators attend AGU24 to better understand our planet and environment, opening pathways to discovery, opening greater awareness to address climate change, opening greater collaborations to lead to solutions and opening the fields and professions of science to a whole new age of justice equity, diversity, inclusion and belonging." - AGU.org
F&M Alumni Alice Fodor and Hannah Connuck put environmental science degrees to work at the Chesapeake Watershed Initiative. Full story by Caroline Miller available on the F&M website!
Back from the past? Assessment of nitrogen removal ability of buried historic wetland soils before and after a 1-year incubation on a restored floodplain
"Ultimately, our results suggest that while inclusion of historic, hydric soils and their legacy micro-biomes is valuable for N-removal in floodplain restoration, the recovery of historic, hydric soils is predictably slow, and attainment of restoration goals, such as increased denitrification, may require multiple years."
Our team in the field, investigating The Trench...