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Is the Potomac River Safe for Recreation?

Tracking E. coli Levels Along the Potomac River After the Spill On January 19, 2026, a 72-inch section of DC Water's Potomac Interceptor sewer line collapsed near the Clara Barton Parkway in Montgomery County. This event released an estimated 240 to 300 million gallons of untreated sewage directly into the...

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River

How to Find Your Watershed (International)

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Discover your watershed connections anywhere in the world with these global mapping tools Whether you live in London, Berlin, Tokyo, or Sydney, understanding your watershed...

What Are You Doing for World Rivers Day?

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September 28, 2025 is World Rivers Day. Join millions worldwide in celebrating and protecting our vital river systems. A Global Movement for Our Waterways This Sunday,...

Reef

Know Your Risk: Tsunami Risk Tools and Evacuation Route Maps

Tsunamis are among the world’s most devastating and unpredictable hazards, affecting coastlines across the Pacific, Indian, and Atlantic Oceans, as well as the Mediterranean...

The Tourism Trap: When Visiting Healthy Reefs Makes Them Sick

And What You Can Do About It The most beautiful coral reefs face an ironic threat: the tourists who love them enough travel hundreds or...

Floods

Know Your Risk: Commercial Tools for Understanding Flood Risk

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While federal and state flood risk tools are the standard resources for regulatory aspects of understanding flood risks, commercial tools expand on these resources...
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Reviews

Book Review: The Source

Martin Doyle's 2018 The Source is one of the best introductions to how we shape rivers and how rivers have shaped us. This book...

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