You have two choices. TJ's Canoe Rental which is downstream of the dam about 1/4 mile or a new bait shop that just opened days ago called
Rock River Outfitters. They will fill you in on what bait to use and what's biting. The store's address & phone# are: 114 River Road, Oregon, IL (815)732-9999 This store is on the east side of the river near the dam.