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Oviedo Vargas

Delaware River with waves in foreground and forested banks in background. Photo by Tim Palmer.

Scientists Oviedo and Dow Make Waves in Freshwater Science

 800 450 Stroud Water Research Center

We congratulate Diana Oviedo Vargas, Ph.D., and Charles Dow, Ph.D., on recent achievements highlighting their commitment to advancing freshwater science.

Clean water running off a farm field.

These Contaminants Are Reaching Our Surface Water

 800 450 Stroud Water Research Center

“Forever chemicals” in sewage sludge are reaching waterways, Stroud Center finds and New York Times reports.

Mandy Cabot and Peter Kjellerup with two Silk Grass Farms staff members.

Silk Grass Farms is a Force for Good

 800 450 Stroud Water Research Center

To understand the state of its water resources and how to protect them, Silk Grass Farms asked the Stroud Center to provide expert guidance.

Trees ready to ship from Octoraro Native Plant Nursery.

The Economic Case for Watershed Restoration

 800 450 Stroud Water Research Center

Restoration can fuel economic growth, cut costs, create jobs, and provide opportunities for businesses, all while supporting freshwater ecosystems.

Publication title with image of a mayfly

High fecal indicator bacteria in temperate headwater streams at baseflow: implications for management and public health

 350 210 Stroud Water Research Center

D.T. Myers, L. Zgleszewski, R. Bier, J.R. Price, S. Morgan, J.K. Jackson, D. Oviedo-Vargas, M. Daniels, D.B. Arscott, J. Kan. 2025. Water Research X 29: 100347.

Diana Oviedo Vargas, Ph.D., collects biosolid samples to test for PFAS.

Study Points to Farmland as Possible Source of PFAS in Fish

 800 450 Stroud Water Research Center

The Stroud Center and the Center for PFAS Solutions have been studying how much biosolids are contaminating farmland and adjacent waters since 2021.

Publication title with image of a mayfly

Quantification of PFAS in soils treated with biosolids in ten northeastern US farms

 350 210 Stroud Water Research Center

Oviedo-Vargas, D., J. Anton, S. Coleman-Kammula, and X. Qin. 2025. Nature Scientific Reports 15: Article 5582.

Publication title with image of a mayfly

Seasonal variation in land cover estimates reveals sensitivities and opportunities for environmental models

 350 210 Stroud Water Research Center

Myers, D.T., D. Jones, D. Oviedo-Vargas, J.P. Schmit, D.L. Ficklin, and X. Zhang. 2024. Hydrology and Earth System Sciences 28(23): 5295–5310.