Can I tag 1 steelhead on the South Fork of the Clearwater and then drive in the same day to the Salmon River and catch 2 more steelhead (limit on Salmon is 3 fish)?

Provided you catch the steelhead on the Clearwater River and then travel to the Salmon River - this would be legal.  You can't catch two steelhead on the Salmon River and then go fish the Clearwater River because you would be exceeding the bag limit for the Clearwater River.   F08