Tidal?

We bought a small property last year, and we are slowly trying to make it into a tiny homestead. One area that I would like to start planning is energy. We have a tidal creek in our yard. It's not saltwater.  We're near Philadelphia - it flows into the Delaware river. It's pretty slow, but on average the depth change is about 6 feet between high and low tide. I'm a complete novice with energy systems, and I'm overwhelmed trying to research this. Does anyone have any advice (even if just to say it's not possible and move on to other things)?

There is a ton of info. if you search for "tidal stream generator" or "tidal power" or "tidal energy basics" etc. For example: https://en.wikipedia.org/wiki/Tidal_stream_generator . Cool stuff. Looks like a great opportunity/possibility.
According to another article tidal has been used since the Middle Ages, and maybe even Roman times. It is more reliable than sun or wind. (As long as the EPA doesn't catch you blocking access for some turtle) should be really fun and productive to set up.

This was quite common in Brittany until quite recently . There are quite a few buildings left to give an idea how it worked. There are also historical buildings left near London .