I'm certainly not the best person to respond, as there are far more experienced members than me when it comes to walleye in rivers or creeks, but since no one else has posted I'll at least share what I think I know; Walleye typically move from a lake upstream into rivers when the water reaches about 40 degrees. The males come upstream first, then the larger females. They will be looking for a dark river (creek) bottom and gravel.
A typical method is to use a Carolina rig with a floating jig head tipped with a 2" or 3" twister tail. Cast straight across the river and let the current carry your offering downstream.
Here's a link to the famous Maumee river run: http://www.maumeetackle.net/fishing...344a3978b1