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Water flowing over rocks in a stream.

Tools for Engaging With Municipalities and the Public on Freshwater Issues

Guidance Documents The Delaware River Basin Policy and Practice Workgroup has developed guidance documents to provide foundational science references for environmental advocates collecting stream data...

Pollution intolerant Stonefly (Family – Chloroperlidae; Genus – Alloperla)

How to See a Stream: Part Two, Stream Monitoring and Impairment

What can one do to help a stream recover from pollution, protect a stream from degradation, or simply understand what the issues and risks are?

Autumn leaves in a flowing stream.

How to See a Stream: Part One, Stream Health Dynamics

Streams and the valleys they drain are complex environments. This complexity makes regulating, restoring, and protecting these aquatic systems a complicated process.

Saving Primrose Creek

It is January 30, 2021, at 1:35 PM (UTC-5:00). In two hours, streamflow at Phillips Mill, Solebury Township, Bucks County, Pennsylvania, has dropped three inches in depth, from 4.7 to 1.7 inches (120 ...

Persistence is the Salt of Stream Stewardship

In this article I describe the process I have used over the past two years in responding to my field observations of inadequately protected road salt piles during winter in southeastern Pennsylvania.

Parking lot outflow to an icy stream.

Investigating Road Salt and Deicer Stream Contamination During a Snowstorm

Understanding the patterns and timing of road salt and deicers entering local streams is important for providing feedback to local decision-makers, guiding watershed management strategies, and improvi...

Photo of a group of watershed volunteers next to a stream.

Scientific Technical Assistance to Pennsylvania-Based Watershed and Conservation Organizations

The Consortium for Scientific Assistance to Watersheds is a team of specialists who provide free organizational and scientific technical assistance to Pennsylvania-based watershed and conser...

EnviroDIY Monitoring Station for Measuring Road Salt

The effects of road salt on stream macroinvertebrate communities are becoming well understood, and therefore road salt isn’t necessarily an “emerging” contaminant. But road salt content in streams cou...