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What Is A Watershed?

A watershed is the area of land where all of watershed
the water that is under it or drains off of it goes into the same place. John Wesley Powell,
scientist geographer, put it best when he said
that a watershed is:

"that area of land, a bounded hydrologic system, within which all living things are inextricably linked by their common water course and where, as humans settled, simple logic demanded that they become part of a community."

Watersheds come in all shapes and sizes. They cross county, state, and national boundaries. In the continental US, there are 2,110 watersheds; including Hawaii Alaska, and Puerto Rico, there are 2,267 watersheds.

-- Excerpts from USEPA

Explore Your Watershed

Use the links below to learn about the health, status, and other information about your watershed
Envirofacts - Search several EPA databases for information about environmental activities that may affect air, water, and land in the U.S.    MyEnvironment - Search for a wide variety of environmental information based on your location, including but not limited to water resources, air quality, etc.   We all live in a watershed - the area that drains to a common waterway, such as a stream, lake, estuary, wetland, aquifer, or even the ocean -- and our individual actions can directly affect it.  
USGS Streamflow and Rain Gauges in the Raritan Basin and Along the Delaware and Raritan Canal

What is Geographic Information Systems (GIS)?

A geographic information system (GIS), or geographical information system, is any system that captures, stores, analyzes, manages, and presents data that are linked to location. In the simplest terms, GIS is the merging of cartography and database technology. GIS systems are used in cartography, remote sensing, land surveying, photogrammetry, geography, urban planning, emergency management, navigation, and localized search engines.

>> Read more from Wikipedia
>> Check our GIS Map Gallery
>> Learn more about What Can You Do With GIS
>> Explore other Watershed Links

Fun Fact Sheets about Water and Watershed

Drink Up for the Summer -- The Importance of Water to Health and to Human Life
New Jersey Fish Habitat Factsheet


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