Since 1967, Stroud™ Water Research Center has focused on one thing — fresh water.
We seek to advance knowledge and stewardship of freshwater systems through global research, education, and watershed restoration.
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Egg development, growth and metabolism of Sigara alternata (Say) (Hemiptera: Corixidae) in fluctuating thermal environments

A diurnally fluctuating thermal system for studying the effect of temperature on aquatic organisms
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.
Upcoming Events
Trout Unlimited STREAM Girls Program
May 21, 8:00 AM – 3:00 PM EDTBrandywine River ShadFest
May 22, 10:00 AM – 3:00 PM EDTWater + Science = Beer
June 2, 6:30 PM – 8:00 PM EDTStream Care Workday
June 4, 9:00 AM – 11:00 AM EDTGirl Scout Cadette Canoeing Program: Think Like a Citizen Scientist Award
June 4, 1:00 PM – 5:00 PM EDTFollow the Hatch — Aquatic Insects in Lancaster County’s Streams and Rivers
June 8, 6:00 PM – 7:30 PM EDT