Long lake is not really a likely swimming hole-can be good fishing until it gets gunked up, then it gets hard to fish. Lost Lake is not a swimming hole either-it gets gunked up by humans, but fishing can be good-gets planted heavily Might try swimming at Clear Lake-but it's mighty cold with the runoff from the Goat Rocks for a pretty good time in the summer. By the middle of June, Clear will have around 20,000 fish planted or more-almost impossible not to catch some then.