Massachusetts paddle

I'm wanting to do a 2 or 3 day trip on my kayak in Massachusetts. As I'll likely be solo, and have not been on the CT river yet, I have some concerns.

Is it a fairly slow moving river in Mass? Is it upstream navigable so I can go down and them back up or vice versa?

I'm looking to camp at one of the amc campsites, do a good bit of fishing, not too concerned about covering long distance on this trip.