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Freshwater Research

Moving Freshwater Science Forward

Our efforts at Stroud Water Research Center require intellectual curiosity, a systematic and rigorous approach to scientific research, and the drive to answer a series of challenging questions about freshwater ecosystems. The answers to these questions may take decades to fully understand, but it is critical that we persist, as they have the power to influence others in ways that positively affect the world’s finite supply of clean fresh water.

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Recent Publications

Modeling the competition and controls for denitrification and dissimilatory nitrate reduction to ammonium (DNRA) in riparian sediments

Joshi, B., D. Dwivedi, M.M. Rahman, M.G. Sena, E.R. Moore, J.G. Galella, M. Peipoch, J. Kan, P. Imhoff, and S. Inamdar. 2025. Journal of Geophysical Research: Biogeosciences 130(12): e2025JG009072.

Hydroclimate and landscape diversity drive highly variable greenhouse gas emissions from tropical and subtropical inland waters

Duvert, C., Borges, A.V., Calamita, E., et al. 2025. Nature Water 3: 1303–1317.

A decision-support framework for evaluating riverine sediment influence on U.S. tidal wetlands

Halls, J.N., S.H. Ensign, and E.K. Peck. 2025. Remote Sensing 7(18): 3130.

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Freshwater Research News

Scott Ensign with Open-Source River Camera and Altimetry (ORCA) for measuring river flooding.
Open Source Hardware Solves Flood Monitoring Challenges
Scientists and engineers at Stroud Water Research Center have developed a compact, inexpensive, and rapidly deployable tool for measuring river floods.
2025 Fall Salt Snapshot data map screenshot
What the Fall Salt Snapshot Revealed About Our Groundwater
Most stream sites sampled this fall exceeded at least one environmental chloride guideline — months after the last road salt was applied.
Floating monitoring stations installed at the inlet and outlet of a drinking water reservoir in Wilmington, Delaware.
Algae on the Rise
Stroud Center’s monitoring supports safer drinking water in Wilmington, Delaware, by streaming real-time data to the city’s treatment facility.
Stroud Water Research Center is an 2025 Anthem Awards Bronze Winner for the Cut the Salt campaign.
“Cut the Salt” Campaign Wins Anthem Award for Social Impact
The award is a testament to Stroud Center staff who help bring science and outreach to life, and would not be possible without our community of partners, volunteers, and donors.
Delaware River with waves in foreground and forested banks in background. Photo by Tim Palmer.
Scientists Oviedo and Dow Make Waves in Freshwater Science
We congratulate Diana Oviedo Vargas, Ph.D., and Charles Dow, Ph.D., on recent achievements highlighting their commitment to advancing freshwater science.
A cross-section showing cover crop roots growing deeply into the soil.
Harnessing Machine Learning for Sustainable Farming and Water Protection
DNA sequencing technology produces mind-boggling quantities of raw data. This is where machine learning is set to open a new expanse of knowledge.