Thanks for the information everyone.
I drew a diagram of the physical construction of the water quality system as I have envisioned it, which I’ve attached below. I wanted to ask your thoughts about the design, particularly any apparent flaws you might see. Do you think there will be sediment buildup inside the stilling well? Is the sensor placement appropriate? Other points I am missing?
I would expect this to be installed in the middle of a stream using rebar or a fence post (dug into the streambed) OR have it be affixed somehow to a bridge structure along the stream/river. The diagram is attached below.
Any information/tips would be much appreciated.