Yes, there is a Washington and Oregon side. Unlike fishing you can fish up to the bank on either side. There is a dividing line down the middle of the river. You can probably find it on line. It almost seems to follow the channel markers. You will want to verify before you head out, so you know which islands are considered Oregon and which are Washington islands. Same goes for the goose hunting. I would always buys licenses for Oregon and Washington. If you hold licenses for both states, you can only shoot one limit as well. It's a federal rule. So, you technically can't go on the Oregon side and shoot 7 birds then go on Washington and shoot another 7 in the same day.