Rock River, Steel Dam Tailwaters Fishing
A river reach of the Rock River in Winnebago County.
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What an Illinois angler should know about the Rock River Steel Dam Tailwaters
Steel Dam Tailwaters of the Rock River, an Illinois river reach, runs past Winnebago County. IDNR counts 350 acres for this reach. The Census place of South Beloit lies under a mile off.
Access and the digest rows follow.
IDNR IFishIllinois waterbody page, ifishillinois.org, read November 4, 2026. Census 2023 places.
Site notes IDNR prints for the Rock River Steel Dam Tailwaters
- Description (IDNR)The Steel Dam Tailwaters section is approximately 4 river miles in length (360 surface acres) from the confluence with the Mississippi River to the Steel Dam in Milan.
- More from IDNRThe Sears Dam, a former hydropower site, enters this section approximately halfway to the confluence with the Mississippi River.
IDNR IFishIllinois waterbody page, ifishillinois.org, read November 4, 2026.
IDNR history of the Rock River Steel Dam Tailwaters fishery
- IDNRThe Rock River was sampled each fall from 2020 through 2025 by the Illinois Department of Natural Resources (IDNR) Region 1 Fisheries crew.
- The purpose was to collect and evaluate the sport fish populations in the Illinois section of the Rock River.
- State endangered and State threatened fish species were also collected and documented with the surveys.
IDNR fishery text, ifishillinois.org, read November 4, 2026.
Reaching the Rock River Steel Dam Tailwaters
Steel Dam Tailwaters of the Rock River has no ramp on the IDNR layer.
More public launches that reach Rock River Steel Dam Tailwaters
- Olson Lake Boat RampOlson Lake, 10 miles
Stay on public land along Steel Dam Tailwaters of the Rock River unless an owner agrees.
IDNR IFishIllinois map, boat ramp and launch layer of October 2025 (KML; name, waterbody and notes as printed), read November 5, 2026.
Creel counts and inch rules for the Rock River Steel Dam Tailwaters
| Species group | Daily limit | Statewide rule as printed |
|---|---|---|
| Alligator Gar | 1 per 24 hours | Harvest limit is 1 Alligator Gar per 24 hours. |
| Blue, Channel, and Flathead Catfish | no limit | There are no daily harvest or size limits, except as specified under Site Specific Regulations. |
| Bluegill, Redear Sunfish, Other Sunfish | no limit | There are no harvest or size limits, except as specified under Site Specific Regulations. |
| Crappie (White, Black or Hybrid Crappie) | no limit | There are no daily harvest or size limits, except as specified under Site Specific Regulations. |
| Lake Sturgeon | no possession | Protected; No possession. |
| Largemouth Bass, Smallmouth Bass, Spotted Bass | 6 (combined) | Daily harvest limit is 6 Bass, either singly or in the aggregate, except as specified under Site Specific Regulations. In rivers and streams and their tributaries statewide, except for the Mississippi, Ohio (including Golconda Marina), and Wabash Rivers, the d |
| Muskellunge, Northern Pike, and their Hybrid | muskellunge 1, northern pike 3 | All Muskellunge and Muskellunge hybrids (Tiger Muskie) taken must be 36" in total length or longer, except as specified under Site Specific Regulations. No more than 1 Muskellunge or Muskellunge hybrid (Tiger Muskie) may be taken per day, except as specified u |
| Paddlefish | 2 | Daily harvest limit is 2 Paddlefish. Please refer to Site Specific Regulations for the Mississippi River between Illinois and Iowa and the Mississippi River between Illinois and Missouri. |
| Striped Bass (Ocean Rockfish), White Bass, Yellow Bass, and their Hybrids | no limit under 17 inches; 3 at 17 inches or longer | There are no daily harvest limits or minimum size limits for Striped Bass (Ocean Rockfish), White Bass, Yellow Bass, and their hybrids, which are less than 17" in total length, except as specified under Site Specific Regulations. For these fish 17" in total le |
| Trout and Salmon | 5 (combined) | Daily harvest limit is 5 trout or salmon, either singly or in the aggregate. |
| Walleye, Sauger, or their Hybrid | 6 (combined) | All Walleye, Sauger, or their hybrid (Saugeye) taken must be 14" in total length or longer, except in the Mississippi River, Wabash River, or except as specified under Site Specific Regulations. Daily harvest limit is 6 Walleye, Sauger, or their hybrid, either |
Unless the digest names it, Steel Dam Tailwaters of the Rock River uses the statewide rows.
Rules printed for the Rock River Steel Dam Tailwaters
- From the Sears and Steel Dam downstream to the Confluence with the Mississippi River:
- Walleye: 15-inch minimum Length Limit; Protected Slot Length Limit with no possession of Fish greater than or equal to 20 inches and less than 27 inches.
- The daily harvest limit is 6 Walleye or Sauger with no more than 1 Walleye greater than or equal to 27 inches.
Site-specific regulations on the IFishIllinois page, as printed, ifishillinois.org, read November 4, 2026.
Anglers 16 and older carry an Illinois fishing license ($15 a year for residents, $31.50 for nonresidents in 2026).
IDNR 2026 Illinois Fishing Information digest (IDNR), read November 4, 2026.
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The closest page in this table to Steel Dam Tailwaters of the Rock River is Rock River, Milan Pool, under a mile away.
| Water | Distance | USGS gauges | Mapped ramps | First IDNR-rated fish |
|---|---|---|---|---|
| Rock River, Steel Dam Tailwaters | 0 | 0 | ||
| Rock River, Milan Pool | under a mile north | 1 | 7 | |
| Rock River, Oregon Pool | under a mile north | 1 | 1 | |
| Rock River, Rockton Pool | under a mile north | 0 | 0 | |
| Rock River, Dixon Pool | 94 miles southwest | 1 | 2 |
USGS gauges, IDNR boat ramp layer and IDNR outlook lines; read November 4, 2026.
An Illinois blacktop jaunt from Rock River Steel Dam Tailwaters
Lakes in the same corner of the state as Rock River Steel Dam Tailwaters
- Lake Victoria1 mile
- Pierce Lake10 miles
- Olson Lake10 miles
- Four Lakes13 miles
Filling the bait bucket near Rock River Steel Dam Tailwaters
- Angler's Edge Fishing and Marinefly shop, Loves Park, 11 miles
- Dick's Sporting Goods Rockfordsporting goods store, Rockford, 15 miles
- Marina Health Care Consultants Incmarina, Rockford, 16 miles
- Rockford Baitbait and tackle shop, Rockford, 17 miles
- Belvidere Bait N Tacklebait and tackle shop, Belvidere, 18 miles
Illinois towns close to Rock River Steel Dam Tailwaters
- South Beloit2 miles
- Rockton2 miles
- Roscoe4 miles
- Machesney Park8 miles
County guides linked to Rock River Steel Dam Tailwaters
Piscifun gear a Prairie State angler could stow for Steel Dam Tailwaters of the Rock River
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The ponds and rivers around Rock River, Steel Dam Tailwaters, photographed
Photo: Seclusive Nature, CC BY-SA 4.0
Photo: Tracy, CC BY 2.0
Photo: Robert Lampros, CC BY-SA 2.0
Photo: David Jakes, CC BY 4.0
Straight replies on Rock River Steel Dam Tailwaters
What part of Illinois holds Steel Dam Tailwaters of the Rock River?
Its Illinois counties: Winnebago County.
Is Steel Dam Tailwaters of the Rock River rising or falling?
The gauge lists skip this water.
How many IDNR-mapped ramps touch Steel Dam Tailwaters of the Rock River?
Nearest mapped launch: Olson Lake Boat Ramp, 10 miles.
Which rules apply on Steel Dam Tailwaters of the Rock River?
Statewide digest row for Largemouth Bass, Smallmouth Bass, Spotted Bass: Daily harvest limit is 6 Bass, either singly or in the aggregate, except as specified under Site Specific Regulations. The same row adds a separate rule for rivers and streams, quoted in the limits band. Its own digest lines are in the limits band.
Which license covers Steel Dam Tailwaters of the Rock River?
Anglers 16 and older carry an Illinois fishing license ($15 a year for residents, $31.50 for nonresidents in 2026).
Which species does IDNR list for Steel Dam Tailwaters of the Rock River?
IDNR sources leave its species blank.
Which counter near Steel Dam Tailwaters of the Rock River keeps a minnow tank?
Head to Angler's Edge Fishing and Marine, about 11 miles away,.
Do I need permission to fish Steel Dam Tailwaters of the Rock River?
Public ramps and parks only, unless a farmer agrees.
Where can I see the rest of the river beyond Steel Dam Tailwaters of the Rock River?
The Rock River page ties together all 7 Illinois pools, this one included.
Take the river road to Steel Dam Tailwaters of the Rock River
Fees, stamps and border rules sit on the license page.