pick one of the bridges you can walk on and see the river bottom. The river there wasn't more than 4 feet deep.

Whitefish don't get all that big. What you'll keep will be between 9-13 inches with most in the 10 inch range.

Are they worth the effort??? Don't know, but I gave up steelheading to switch to whitefish in the 80's. I'd catch a limit of whitefish every time out and later smoke them. Limit's 15. And it only took about an hour to get that limit. That also counted missed bites as I would only hook about 1 out every 4 bites. Sorta very active action.