Illinois big rivers

Rock River Fishing in Illinois

The Illinois side of the Rock River, pool by pool: 7 IDNR pages.

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Photo: Seclusive Nature, CC BY-SA 4.0

Illinois big rivers

Reading the Rock River before launching

The Rock River reaches Illinois anglers through 7 IDNR pool pages, all linked below. 14,138 acres in all, counting pools IDNR sizes.

23 mapped ramps and 12 gauges serve it.

7IDNR pool pages
23mapped ramps
6NOAA gauges
14,138pool acres (IDNR)

IDNR IFishIllinois river pool pages, IDNR boat ramp layer, NOAA NWPS and USGS gauge lists; read November 4, 2026.

Pools

Pool pages for the Rock River

Pool or reachAcres (IDNR)Mapped rampsFirst IDNR ratingUSGS gauges nearbyCounties
Rock River, Dixon Pool1,76021Lee and Ogle counties
Rock River, Fordham Pool2,05794Winnebago County
Rock River, Milan Pool5,84471Henry County and 2 other counties
Rock River, Oregon Pool1,86611Ogle and Winnebago counties
Rock River, Rockton Pool15500Winnebago County
Rock River, Steel Dam Tailwaters35000Winnebago County
Rock River, Sterling Pool2,10642Lee and Whiteside counties

IDNR fishing outlook ratings and survey notes as printed on the IFishIllinois page, read November 4, 2026. Pool acres as printed on each IDNR pool page.

Access

Concrete and gravel ramps on the Rock River

IDNR IFishIllinois map, boat ramp and launch layer of October 2025 (KML; name, waterbody and notes as printed), read November 5, 2026.

Levels

River stage table for the Rock River

NWS gaugeReadingFlowFlood categoryTime (UTC)
Rock River at Rockton4.6 ft3.88 kcfsno flooding2026-11-05 18:30:00 UTC
Rock River at Latham Park4.69 ft3.94 kcfsno flooding2026-11-05 18:30:00 UTC
Rock River at Rockford (Auburn Street)2.88 ft4.72 kcfsno flooding2026-11-05 18:45:00 UTC
Rock River at Rockford (Fordam Dam)2.35 ft–no flooding2026-11-05 19:00:00 UTC
Rock River near Joslin6.17 ft5.1 kcfsno flooding2026-11-05 17:45:00 UTC
Rock River at Moline8.91 ft7.94 kcfsno flooding2026-11-05 18:30:00 UTC

NOAA National Water Prediction Service gauge readings (water.noaa.gov), read November 5, 2026; dated readings, not live (kcfs = thousand cubic feet per second).

NOAA posted these Rock River stages at 2026-11-05 17:45:00 UTC; they are snapshots, not a live feed.

Real-time USGS sites on the Rock River

USGS gaugeLatest readingTime (ET)
Rock River At Dixon, Il6,180 cfs, 9.27 ft gage heightNov 5 4:15 pm
Rock River At Rockton, Il4,050 cfs, 4.71 ft gage heightNov 5 4:30 pm
Rock River At Latham Park, Il4.70 ft gage heightNov 5 4:30 pm
Rock River At Auburn St At Rockford2.88 ft gage heightNov 5 4:45 pm

US Geological Survey provisional data, retrieved Nov 5, 2026 5:33 pm ET. Provisional readings can be revised.

USGS instantaneous values, provisional.

Limits

The IDNR keep rules for the Rock River

Species groupDaily limitStatewide rule as printed
Alligator Gar1 per 24 hoursHarvest limit is 1 Alligator Gar per 24 hours.
Blue, Channel, and Flathead Catfishno limitThere are no daily harvest or size limits, except as specified under Site Specific Regulations.
Bluegill, Redear Sunfish, Other Sunfishno limitThere are no harvest or size limits, except as specified under Site Specific Regulations.
Crappie (White, Black or Hybrid Crappie)no limitThere are no daily harvest or size limits, except as specified under Site Specific Regulations.
Lake Sturgeonno possessionProtected; No possession.
Largemouth Bass, Smallmouth Bass, Spotted Bass6 (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 Hybridmuskellunge 1, northern pike 3All 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
Paddlefish2Daily 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 Hybridsno limit under 17 inches; 3 at 17 inches or longerThere 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 Salmon5 (combined)Daily harvest limit is 5 trout or salmon, either singly or in the aggregate.
Walleye, Sauger, or their Hybrid6 (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

Digest entries for the Rock River

Water as printedSpeciesRule as printed (code)
Rock RiverWalleye15 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
Rock RiverWalleye or Sauger6 Fish Daily Harvest Limit with no more than 1 Walleye greater than or equal to 27 inches
Rock RiverSmallmouth Bass14 inch Minimum Length Limit

Site-specific regulations as printed in the 2026 Illinois Fishing Information digest (IDNR) page 51, 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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Stocking

The Rock River in the stocking table

YearSpecies as listedNumber, all pools
2026Walleye111,329
2025Walleye87,306
2024Walleye128,527
2023Walleye70,248
2022Walleye107,268

IDNR fish stocking table on ifishillinois.org (year, water, species, size class and number as listed; no stocking dates published), read November 4, 2026.

Nearby

Down the county road from Rock River

Tackle stops within a short drive of Rock River

  • Millers Sport Center Incsporting goods store, Lanark, 13 miles
  • Rock River Outfittersbait and tackle shop, Oregon, 15 miles
  • Bunnys Bait Shopbait and tackle shop, Dixon, 16 miles
  • South Shore Marinamarina, Rock Falls, 19 miles
  • Oppold Marinamarina, Sterling, 19 miles
  • Fisheadtacklebait and tackle shop, Sterling, 20 miles

Current past the Rock River drainage

Courthouse-county pages reaching Rock River

  • Lee County
  • Ogle County
  • Winnebago County
  • Henry County
  • Rock Island County
  • Whiteside County
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Fish photos

A photo field guide to Rock River fish

Alligator Gar, Illinois
Alligator Gar
Photo: Eden, Janine and Jim, CC BY 2.0
Blue Catfish, Illinois
Blue Catfish
Photo: USFWS Mountain-Prairie, Public domain
Bluegill, Illinois
Bluegill
Photo: Alabama Extension, CC0 1.0
White Crappie, Illinois
White Crappie
Photo: Oregon Department of Fish & Wildlife, CC BY-SA 2.0
Answers

The bait shop questions about the Rock River

How does IDNR divide the Rock River?

There are 7 IDNR pool pages: Dixon Pool, Fordham Pool, Milan Pool, Oregon Pool, Rockton Pool, Steel Dam Tailwaters and Sterling Pool.

How many ramps reach the Rock River?

Try Rock River – Dixon Pool Castle Rock State Park Boat Ramp, one of 23 ramps.

Can a neighbour-state angler fish the Rock River?

Anglers 16 and older carry an Illinois fishing license ($15 a year for residents, $31.50 for nonresidents in 2026).

What bites on the Rock River?

IDNR lists no species on its pool pages.

Which rules apply on 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. It also carries 2 site-specific entries.

Where are the Rock River gauges?

The levels band lists 6 NOAA gauges with dated NOAA readings.

Which store outfits a trip on the Rock River?

Try Millers Sport Center Inc.

Which pool of the Rock River should I start with?

Rock River, Dixon Pool opens the list; compare pools in the table.

Plan a trip down the Rock River

Buy the Illinois license online first.