For starters, you're fishing at night. A complete waste of time. Walleye can be caught at anytime. This is out of a creek in broad daylight.
Look through these pictures and look for other pictures of walleye in the gallery. You'll notice none of them were taken at night.
http://wadauwant.com/fishing_and_outdoo ... 20pg9.html
This is the right time of year though.
Where you were, you were also in the wrong place. You should have been between the South Elgin dam and the bridge, then a little down from the bridge. Between the dam and the bridge, on the east side you should see a weeping willow tree if it's still there. 30 to 40 feet out starting at that tree is a channel. It starts out very narrow and widens as it heads for the bridge. Fish there.
For your future adventures, St. Charles from the dam down on the west side. But I would just skip St. Charles all together.
Geneva from the dam all along the west side down to the tracks, then fish the hell out of that whole pool in front of and under the railroad tracks.
Batavia you could fish in town, but I would head behind Funway and fish around there. Then skip down stream till you get to the bluffs. From where the islands end and the pool near the bluffs begin, verified rumors of 14 pound walleye exist.
North Aurora from the dam down to under I-88. You'll figure out the deeper spots.
Indian Trail, east side from the bridge to the end of the water plant.
Aurora, west side. You'll figure it out.
Montgomery, doesn't matter. They used to be everywhere. Railroad tracks by the treatment plant. That whole big pool upstream of the tracks, from one side to the other. Just don't try to walk under the tracks on the west side. You won't make it, but you do want to fish it. Then go down to the flats down from the treatment plant. That big pool from the island to the power line. The whole thing. The east side is deep so be careful.
Down from there all the way to Yorkville, don't bother. Never caught a walleye from Oswego down and I've fished the hell out of it.
Yorkville, from the dam down past 47 to the first island just down from the mouth of Blackberry Creek. Anywhere in there. Go slow.
Mouth of Big Rock. Best spot is the other side. They like to sit in the lift at the end of the pool.
Down from there you're on your own. Unless you can figure out how to get to the old Millhurst dam.
That will cost you cash dollar bills.
Last 3 hours of daylight, first hour of dark if you must. Then go home.
But then the mornings are pretty good and I've always done well smack dab in the middle of the day.
They live on the bottom, fish the bottom. Light line, small octopus hook, small split shot about 12 to 18 inches above the hook, extra large fatheads. Put it on the bottom, move it around, but not much.
But what do I know. I only caught 75 of them in one outing one time in Montgomery. But I cheated. How is between me and a guy I used to fish with often.
Besides, wet socks pulled off the bottom of the river put up a better fight.
You see, all you had to do was ask.
I may have to send this to Dale, pretty good walleye fishing prospects report if I do say so myself.