Today I went out to do gather information, but unfortunately, the waters were too turbid to look for muscles, but I still did learn a lot about muscles. I learned about how they filter and reproduce. I learned that some species actually mimic small fish so that bass bite and then the babies latch onto its gills so that the bass will transport the babies to a different part of the stream and also give them food for a bit via their bloodstream.
Instead of the survey, we walked around the lake and I learned about how they perform wetland surveys. They get an augur and take out a small chunk of the soil to test for aquatic soil and such. I saw some of the wetland type vegetation and bugs. The bald cypress tree was an example of these vegetation.
That is an example of a stream that only fills during rainfall which could definitely be restored.
There is also this concept of no net loss which is legal required by the government. Basically, if you destroy or impact a stream, you have to create an equally positive impact or restore a stream.