Fishing on Property Question

[WormFisherman]

Hey guys, I'm just wondering if your allowed to fish anywhere as long as there aren't any signs saying not too. I recently started exploring a section of a stream that goes through people's backyards. One area of the stream is probably less then 30 feet from a house, so it's pretty weird. I'm not trying to have people call the cops, so any answer to the question is much appreciated. Thanks!