Called down this morning and talked with the hatchery/DNR the tube is letting out 500 cfs the lake surface temp by the tower was 50 deg.Some crappie and walleye are being caught on the lake in the shallows and below the tube.Depending on the weather IF it stays nice fishing should be good.There is also 3 mile and 12 mile which isn't far from Rathburn. Also you got Lake Red Rock which is a hour north of Rathburn.It is a little on the high side,but they are trying to get it back to normal pool for the crappie spawn and white bass.I live in Knoxville Iowa and fish all 4 of the lakes.If you have any questions feel free to PM me!!!!