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Illinois rivers and pools

Mississippi River, Pool 21 Fishing

A navigation pool of the Mississippi River in Adams County.

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Photo of Mississippi River: nearly almost, CC BY-SA 4.0

Illinois river pools

Reading the Mississippi River Pool 21 before launching

IDNR treats Pool 21 of the Mississippi River as its own navigation pool, reaching into Adams County. IDNR sizes the pool at 8,690 acres. The far bank belongs to Iowa and Missouri, under a digest reciprocity text. Quincy sits under a mile from the map point.

Trailers go in at 1 boat ramp.

8,690acres (IDNR)
1mapped ramps
0USGS gauges
1county

IDNR IFishIllinois waterbody page, ifishillinois.org, read November 4, 2026. Census 2023 places.

IDNR

From the IFishIllinois page on the Mississippi River Pool 21

  • Location (IDNR)Pool 21 extends from Lock & Dam 21 located near Quincy, Illinois upstream to Lock & Dam 20 located near Canton, Missouri.

IDNR IFishIllinois waterbody page, ifishillinois.org, read November 4, 2026.

Access

Concrete and gravel ramps on the Mississippi River Pool 21

Farm fields line long stretches of Pool 21 of the Mississippi River, so get a landowner yes before crossing.

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

Limits

The IDNR keep rules for the Mississippi River Pool 21

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

Begin with the statewide rows for Pool 21 of the Mississippi River; site entries override them.

Digest entries for the Mississippi River Pool 21

  • Recreational Use Restrictions
  • : It shall be unlawful to trespass upon a designated waterfowl hunting
  • area during the 7 days prior to the regular duck season, or to fish on
  • such areas during the regular duck and Canada goose season except
  • in areas posted as open to fishing. It shall be unlawful to trespass upon
  • areas designated as waterfowl rest areas or refuges from 2 weeks prior
  • to the start of the regular duck season through the end of duck and
  • Canada goose season.

Site-specific regulations on the IFishIllinois page, as printed, ifishillinois.org, read November 4, 2026.

State-line rules on the Mississippi River Pool 21

  • Reciprocity (digest)Officers of Illinois and Iowa will recognize and accept valid sport fishing licenses of either state when legally possessed and used by hook-and-line sport fishermen on the Mississippi River proper forming a common boundary between Illinois and Iowa, including its backwater lakes and sloughs contiguous with the flow of waters in the main channel; provided that you do not fish from or attach any device or …
  • Reciprocity (digest)Officers of Illinois and Missouri will recognize and accept valid sport fishing licenses of either state when legally possessed and used in the Mississippi River and its backwaters within the boundary of Missouri adjacent to the state of Illinois. Persons licensed in only one state may also fish in the other state’s portion of any oxbow lakes through which the IllinoisMissouri boundary passes, and may fish …

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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Compare

Pools above and below Mississippi River Pool 21

For a second option, Mississippi River, Pool 22 lies about 14 miles from here.

WaterDistanceUSGS gaugesMapped rampsFirst IDNR-rated fish
Mississippi River, Pool 2101
Mississippi River, Pool 2214 miles south02
Mississippi River, Pool 2020 miles north02
Mississippi River, Pool 2437 miles southeast06
Mississippi River, Pool 1943 miles north01

USGS gauges, IDNR boat ramp layer and IDNR outlook lines; read November 4, 2026.

Nearby

Down the county road from Mississippi River Pool 21

More Illinois lakes within reach of Mississippi River Pool 21

  • Soldiers & Sailors Home Lake6 miles
  • Moorman Park Lake7 miles
  • Arrowhead Heights Lake20 miles
  • Siloam Springs Family Fishing Pond29 miles

Tackle stops within a short drive of Mississippi River Pool 21

  • Wiemelts Bait And Tackle LLCbait and tackle shop, Quincy, 7 miles
  • Dick's Sporting Goods Quincysporting goods store, Quincy, 9 miles
  • The Boat Housemarina, Clayton

Beds and breakfasts for a run to Mississippi River Pool 21

  • Quincy7 miles
  • Payson18 miles
  • Camp Point20 miles
  • Warsaw23 miles

Courthouse-county pages reaching Mississippi River Pool 21

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Fish photos

Fish to recognise on sight at Mississippi River, Pool 21

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: USFWS Mountain-Prairie, Public domain
Paddlefish, Illinois
Paddlefish
Photo: USFWS Fish and Aquatic Conservation, Public domain
Answers

What gets asked about Mississippi River Pool 21 around Illinois

Which county courthouse covers Pool 21 of the Mississippi River?

Pool 21 extends from Lock & Dam 21 located near Quincy, Illinois upstream to Lock & Dam 20 located near Canton, Missouri. Its Illinois banks lie in Adams County.

Which gauge reads Pool 21 of the Mississippi River?

No gauge is tied to it here; a neighbouring river page gives a rough idea.

Which ramps reach Pool 21 of the Mississippi River?

There are 1 boat ramp, Mississippi River – Pool 21 Quincy Boat Ramp among them.

Does the digest print extra rules for Pool 21 of the Mississippi 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. See its site-specific rows too.

What does IDNR charge for a license good on Pool 21 of the Mississippi River?

Anglers 16 and older carry an Illinois fishing license ($15 a year for residents, $31.50 for nonresidents in 2026). Reciprocity with Iowa and Missouri is printed in the limits band.

Is Pool 21 of the Mississippi River good for catfish?

IDNR names no species for it; statewide rows still apply.

Which store outfits a trip on Pool 21 of the Mississippi River?

Stop at Wiemelts Bait And Tackle LLC, about 7 miles away,.

Can I bank fish Pool 21 of the Mississippi River?

Ask before crossing private ground; public ramps and parks are open.

How does Pool 21 of the Mississippi River fit into the river?

IDNR treats it as one of 15 pools of the Mississippi River.

Put Pool 21 of the Mississippi River on the calendar

Buy the Illinois license online first.