About Us

About Johnson Creek Watershed

Johnson Creek flows 26 miles from its headwaters near the Sandy River to its confluence with the Willamette River, passing through five cities (Gresham, Portland, Milwaukie, Damascus, and Happy Valley) and two counties (Clackamas and Multnomah) along the way.

A narrow ribbon of green and blue, Johnson Creek is one of the resources that makes the east Portland-metro area a wonderful place to live.

A watershed is typically defined as the area of land where all precipitation drains to a common water body, such as a river or lake. Watersheds are not made of water, but of land. This means that the boundaries of a watershed are determined by the shape of the land that surrounds them. Water runs downstream, so buttes and ranges often form the boundaries of watersheds.