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The best way to think about a watershed
is to imagine a funnel. The funnel can be any shape and any size, but
the important idea is that the funnel concentrates everything toward
one point. If you place a drop of water anywhere in that funnel it will
slide down the walls and fall out through the spout. This is very much
the way a watershed works. The walls of the funnel represent the sloping
topography of the land within the watershed. The funnel's rim represents
the highest points in the watershed from which all land slopes inward
- a watershed's "rim" is called a divide. The spout
represents the point to which all the water passing through the watershed
is concentrated, like a river, lake, or in this case a creek. So, a
watershed is the area of land over which all water travelling to the
same body of water flows.
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