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  1. IDEM: Nonpoint Source: Nonpoint Source Home

    Learn about how I can improve water quality. Report a water quality problem. Read a success story. Learn more about blue-green algae. Learn about wetlands. Learn about household …

  2. What is a watershed? - NOAA's National Ocean Service

    What is a watershed? It’s a land area that channels rainfall and snowmelt to creeks, streams, and rivers, and eventually to outflow points such as reservoirs, bays, and the ocean.

  3. WATERSHED Definition & Meaning - Merriam-Webster

    The watershed year for science fiction must be 1968, when Stanley Kubrick's 2001: A Space Odyssey appeared, not only dramatically expanding for this kind of motion picture the …

  4. What's a Watershed?

    Think of a watershed like a funnel. If you place a drop of water anywhere in the funnel, it will fall out through the spout. A watershed works much the same way, and is the land and drainage …

  5. Explainer: What Is A Watershed? - Earth.Org

    Apr 16, 2022 · A watershed is an area of land that channels water such as rain and snow to a body of water like a lake, river, or stream. This term is often used interchangeably with a …

  6. What is a watershed? – The Institute for Environmental Research …

    Jun 16, 2025 · A watershed, also known as a drainage basin, encompasses the entire land area that contributes water to a single point. Imagine it as a bowl; rainfall that lands anywhere within …

  7. What is a watershed? It's the land that water flows across or under on its way to a stream, river, or lake. How do watersheds work? The landscape is made up of many inter connected basins, or …

  8. What Is a Watershed Area and Why Does It Matter?

    Aug 23, 2025 · A watershed, also known as a drainage basin or catchment area, is an expanse of land where all precipitation and surface water drains into a single common outlet, such as a …

  9. Watersheds and Drainage Basins | U.S. Geological Survey

    Jun 8, 2019 · A watershed is an area of land that drains all the streams and rainfall to a common outlet such as the outflow of a reservoir, mouth of a bay, or any point along a stream channel.

  10. What is a watershed and why does it matter? - Washington State ...

    What is a watershed and why does it matter? A watershed is an area of land where all the water—whether from rain, snowmelt, or springs—drains into a common water body, such as a …