lots of posts on this very subject but in a nut shell, in Ohio, if your on stream bottom, you are trespassing no matter how you got there, if boating, you are able to take the least distance on shore around an obstacle but not allowed to anchor on stream owners property and not to fish outside of the boat.
Splitting grey hairs here, technically in Ohio, even in a boat, you can not "hunt fish/game" on private property but the law isnt usually held tto the fullest degree of the law until an owner asks you to move on, and you dont, then the law could enforce it to that level. ( but rarely is)
Bottom line is get permission if your not sure about fishing there, if thats not an option, get a canoe or kayak and fish from it, if a landowner asks you to leave, please do so without confrontation, if you push the envelope, in the end, youll likely loose the case if the law gets involved.
Salmonid