Since 1967, Stroud Water Research Center has focused on one thing — fresh water.
We advance knowledge and stewardship of freshwater systems through global research, education, and watershed restoration.

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Freshwater Research

Environmental Education

Watershed Restoration

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Road Salt is Polluting Fresh Water

Salt keeps us safe on icy roads — but it’s also quietly harming waterways.

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Latest News

Publication title with image of a mayfly

The effect of grazing intensity on phosphorus spiralling in autotrophic streams

Mulholland, P.J., J.D. Newbold, J.W. Elwood, and C.L. Hom. 1983. Oecologia 58:358–366.

Continuous ammonium enrichment of a woodland stream: uptake kinetics, leaf decomposition, and nitrification

Newbold, J.D., J.W. Elwood, M.S. Schultz, R.W. Stark, and J.C. Barmeier. 1983. Freshwater Biology 13(2):193–204.

Diel fluctuations of DOC generated by algae in a piedmont stream

Kaplan, L.A., and T.L. Bott. 1982. Limnology and Oceanography 27:1091–1100.

Nutrient spiralling in streams: implications for nutrient limitation and invertebrate activity

Newbold, J.D., R.V. O’Neill, J.W. Elwood, and W. Van Winkle. 1982. American Naturalist 120(5):628–652.

Population synchrony in mayflies: a predator satiation hypothesis

Sweeney, B.W., and R.L. Vannote. 1982. Evolution 36:810–821.

Organic carbon spiralling in stream ecosystems

Newbold, J.D., P.J. Mulholland, J.W. Elwood, and R.V. O’Neill. 1982. Oikos 38(3):266–272.

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Featured Initiatives and Partnerships

WikiWatershed® web tools offer watershed data visualization, geospatial analysis capabilities, and science-based predictions of human impacts on stormwater runoff and water quality.

The Water Quality mobile app is a water-monitoring data-collection and learning tool designed for use by educators and their students, citizen scientists, and researchers.

EnviroDIY™ is a community where members ask and answer questions and network within interest groups to develop do-it-yourself environmental science and monitoring devices.

The Society for Freshwater Science Taxonomic Certification Program ensures skilled persons are providing aquatic invertebrate identifications in North America.

The Leaf Pack Network® is an international network of teachers, students, and citizen monitors using a simple experiment to determine the health of their local streams.

The Consortium for Scientific Assistance to Watersheds provides free technical assistance to Pennsylvania-based watershed and conservation organizations.