Wherspan has some Flatheads, and Channel Cat. I have got some good hits on live bluegills. A good spot to fish at Wherspan is along the sides of the submerged road. There are some ditches that really produce.
Zorinsky as I understand it has some more elusive Flatheads.
However, as most people in this post have stated fishing a river access point is going to be your best bet. Live or Cut.
