A watershed is the land that surrounds and drains rain, snowmelt, and other water into a lake, pond, wetland, stream, or river. A watershed can act something like a funnel. Depending on its ability to retain water, some—or most—of the water that falls anywhere within a watershed will run down to the bottom of it. To illustrate, think of land on a hill, miles from the nearest stream. When rain falls, some of the water soaks into the soil and some evaporates into the air. The water that is not absorbed, or doesn’t evaporate, runs off the land. That water joins small streams and wetlands that drain into lakes and rivers, and eventually flows to the ocean.
					In the case of the Seven Mile Creek Watershed, most of the rain and snow that fall in its 23,551 acres eventually reach Seven Mile Creek. The water quality of Seven Mile Creek, therefore, reflects the health of the rest of the watershed.
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