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Lake Information

County: Grundy

Acreage: 33

Recreational Amenities

Boat Fishing? Yes

Boat Ramps? Yes

Boat Rental? No

Skiing? No

Swimming? No

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There are no zebra mussels in this lake.

Lake Status Summary  ( Full PDF Report )

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Fish Status


Very Good

Bluegills 7 inches and larger accounted for 12.1% of the total collection in 2015, while bluegills 6 inches and larger accounted for more than one-half of the collection (60.0%). This is likely one of the better bluegill populations in the Mazonia Main Unit.



Channel catfish have proven to be a difficult species to sample in strip-mine lakes and the 2015 survey followed that trend. Reproduction and recruitment appear sporadic. Catfish collected in 2015 averaged 19.8” with the largest fish exceeding 22”. Channel catfish are stocked on an alternating basis with other select Mazonia lakes. Site Regulation: 6 fish daily creel limit.



White and black crappie were collected in fair number in 2015 with black crappie the more numerous of the two species. Nearly three-fourths of the combined adult crappie collected were 10” or larger. Fish up to 13” were collected while the average size was 9.2”. Site Regulation: white, black, or hybrid crappie – 10 fish daily creel limit.



The 2015 survey yielded electrofishing catch rates that declined to their lowest point in many years. The majority of those fish fell between 10” and 14”. The average size bass collected was 12.2” which is slightly larger than the long-term average. Legal-sized bass (15”-plus) accounted for 26% of the adults collected. Site Regulation: 15” minimum length limit; 3 fish daily creel limit.

Location: Bullhead Lake (Lake #7) 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: Bullhead Lake is one of the largest impoundments in the Main Unit at 32.9 surface acres. Shoreline access is limited by extensive stands of tall reed grass. The lake has a one-lane concrete boat ramp with adjacent parking. Bullhead 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: No special mercury advisory or other contaminant-related consumption advisories pertain. Bullhead Lake is surveyed on an alternate year basis. Fish stocking has been limited to mainly channel catfish. A variety of other species that can be caught in Bullhead Lake include common carp, freshwater drum, bullheads, green sunfish 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 County Fisheries Biologist