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Lake Information

County: Grundy

Acreage: 18

Recreational Amenities

Boat Fishing? Trolling Motor Only

Boat Ramps? Yes

Boat Rental? No

Skiing? No

Swimming? No

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There are no zebra mussels in this lake.

Fishing Outlook  ( Full PDF Report )

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Fish Status



The average length for bluegills collected in the 2015 survey was 5.1” which is where it has been for several years. Larger bluegills, those that were 7” or more, increased from the previous survey and comprised 13.1% of the survey collection.



This species has proved very difficult to sample and assess in Carp Lake. Surveys tend to produce very low number, but site reports indicate anglers have reasonable success, although Carp Lake is not thought of as one of the better lakes for channel catfish. Site Regulation: 6 fish daily creel limit.



The crappie fishery at Carp Lake is dominated by white crappie and these were collected in low number in the 2015 survey. Average length for crappie decreased to 8.1” which falls below the long-term average. Fish exceeding 12” were collected but were uncommon. Site Regulation: white, black, or hybrid crappie – 10 fish daily creel limit.



Electrofishing catch rates increased very slightly from the previous survey, but continued to fall below the long-term average. A large portion of the 2015 collection was comprised of bass that fell just shy of the 15-inch minimum length limit, while 22% of the sampled adults exceeded this length. The average size bass collected measured 11.8” while the maximum size bass collected approached 20”. Site Regulation: 15” minimum length limit; 3 fish daily creel limit.

Location: Carp Lake (Lake #8) is located within the Mazonia State Fish and Wildlife Area Main Unit, 3 miles southwest of Braidwood in Grundy County on Illinois Route 53 and Huston Road.

Description: Carp Lake is an intermediate-sized impoundment in the Mazonia Main Unit covering 17.6 surface acres. It is connected by a narrow channel to Gar Lake (Lake #9). Shoreline access is limited by extensive stands of tall reed grass. The lake has a one-lane concrete boat ramp with adjacent parking. Carp Lake is closed to fishing during upland game and waterfowl season. Following the completion of the hunting seasons, it reopens for ice fishing dependent upon ice conditions.

History and Status of the Sport Fishery: Carp Lake surveyed on an alternate year basis. Fish stocking has included channel catfish and northern pike (discontinued due to poor results). No special mercury advisory or other contaminant-related consumption advisories pertain. A variety of other species which can be caught include common carp, bullheads and several gar species.

Additional Lake Information: Trolling motor only. Two pole and line fishing only.

Contact Information:
Mazonia/Braidwood State Fish & Wildlife Area
IDNR Fisheries Biologist, Rob Miller