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Rachel Johnson and Dave Arscott at the Watershed Heroes event.

Stronger Together: A Nonprofit Partnership Raises Road Salt Awareness

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Stroud Water Research Center is honored to have received the Watershed Heroes Nonprofit Steward award from Tookany/Tacony-Frankford Watershed Partnership.

An EnviroDIY monitoring station next to a USGS gaging station on White Clay Creek near Avondale.

The Best Environmental Sensor: Is EnviroDIY Water Quality Data as Good as USGS?

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For National Water Quality Month and World Water Monitoring Day, we’re putting EnviroDIY to the test!

Evaluating NCRN Data Quality, Revising and Updating Protocols, and Analyzing Long-Term Data

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The National Park Service National Capital Region Inventory and Monitoring Network (NCRN) has monitored stream water quality and quantity for more than 15 years in shallow streams located in 10…

Monitoring Fish Populations and Stream Habitat Quality for the National Park Service

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This project monitors biological conditions, water quality, habitat integrity, and fish at 37 sites in 10 national parks in the National Capital Region Network around Washington, D.C. The findings of…

Phytoplankton Dynamics at the Brandywine River

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High-frequency temperature, oxygen, and chlorophyll sensors, canoe float trips, and nutrient monitoring are the tools being used to study how much and how fast algae grow while they travel down…

Tidal Rivers Biofingerprinting Sediment: Resolving Sediment Connectivity Between Rivers and Estuaries by Tracking Particles With Their Microbial Genetic Signature

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Sediment flowing from rivers to estuaries is a double-edged sword: too much sediment can harm oyster beds but not enough sediment can starve tidal marshes. Measuring whether a river is…

Stream School participants collecting leaf packs.

Consortium for Scientific Assistance to Watersheds (C-SAW)

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Stroud Water Research Center educators, scientists, and restoration staff provided technical assistance to county conservation districts, municipal environmental advisory committees, watershed associations, and citizen action groups as part of a…

Two scientists paddle on the Brandywine Creek in Pennsylvania during an algae bloom.

New Way to Trace Algae Origins Could ID Sources of Water Pollution

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Real-time chlorophyll sensors can be used to determine the origins of algae in rivers and streams. 

Algal bloom in Brandywine Creek where it flows under a railroad bridge.

Who’s Polluting Our Water? Scientists’ New Way to Trace Algae Origins Could Tell Us

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Not all algae are harmful but too much can be deadly. Why? Because when they die, the blooms feed bacteria that rob the water of oxygen. 

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Deciphering the origin of riverine phytoplankton using in situ chlorophyll sensors

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Peipoch, M., and S. Ensign. 2022. Limnology and Oceanography LettersPeipoch, M., and S. Ensign. 2022. Limnology and Oceanography Letters 7(2): 159-166.