Clark County has 10 watersheds that all drain to the mighty Columbia River. Clark County’s Clean Water Division staff monitors many of the waterways to better understand their health. Staff reviews a wide variety of parameters for water quality, including metals, fecal coliform, pH, temperature, etc. They also inventory the biological diversity of the aquatic bugs, also called macroinvertebrates. Like the old adage of a canary in a coal mine, aquatic bugs are indicators to how healthy the waterways can be for sensitive species. The pdf2010 Stream Health Report is a condensed summary of our local waterway health. Visit the Clean Water Division’s web page for more in depth information about stream health. What watershed do you live in?

Find your watershed