1. A watershed is generally defined as:

        b. all the land area that drains to a given point in a waterbody       

2. Percentage of Americans who can correctly answer the previous question, according to national surveys.

        c. 41 %       

3. Stream order is a technique to:

        b. classify streams based on their location in the drainage network

4. How much land in a watershed would be taken up by a stream buffer network that extends a distance of 100 feet from either side of the stream?

        d. 5%

5. Recent watershed research has discovered that urban stream quality begins to decline sharply once impervious cover in a watershed exceeds:

        b. 10%

6. What percentage of Americans rely on septic systems to dispose of their wastewater?

        d. 25%