Sometimes walking along a stream and looking at plants says more than we realize.
Sometimes walking along a stream and looking at plants says more than we realize. There are some local plants that only grow in fast water, and others never found out of slow. You quickly realize that "plants" is kind of an empty word - just like "fish". If you can gain a little knowledge of which species of plants, how it grows in nature, etc, you can pick up useful info on water flow.