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Lake Information

County: Perry

Acreage: 66

Recreational Amenities

Boat Fishing? Unlimited HP/Wake Only

Boat Ramps? Yes

Boat Rental? No

Skiing? No

Swimming? No

Picnicking? Yes

Camping? Yes

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Maps are not intended for navigation.

There are no zebra mussels in this lake.

Fish Stocking






Walleye x Sauger (Saugeye)

Fingerling 1 - 3"



Walleye x Sauger (Saugeye)

Fingerling 1 - 3"


Additional information for stocking on Pyramid Denmark - Mallard Lake

Fishing Outlook  ( Full PDF Report )

Click here for a list of all reports.



Fish Status



The Bluegill population size structure is poor. Very few Bluegill over 7 inches were collected.



A low density population of Channel Catfish exists in the lake. Five were collected during the fall netting survey, ranging in size from 2 to 6.5 lbs.



Very few crappie have ever been collected from Mallard Lake. This lake is very steep-sided which limits the effectiveness of trap nets, which are considered the best gear for sampling crappie. Although little data has been collected, anglers have reported that a quality fishery exists.


Very Good

Electrofishing is now a suitable sampling tool at this lake thanks to modernized equipment that can effectively stun fish in high conductivity water. Therefore, an electrofishing survey was conducted during April of 2021. The survey was conducted at night due to the deep, steep-sided nature of the lake, which can limit the efficiency of electrofishing during daylight hours. Results of the survey indicate a quality bass fishery in Mallard Lake. A total of 46 Largemouth Bass were collected during 30 minutes of electrofishing. Of the bass collected, 43% were at least 15 inches and 11% were over 18 inches in length. Body condition generally increased with length, likely due to the abundance of large shad in the lake. The largest bass collected was 4.3 lbs.

SAUGEYE (Walleye/Sauger Hybrid)


Annual stockings of Saugeye (Walleye x Sauger Hybrids)were begun during 2021. A targeted electrofishing survey (night) conducted on November 1, 2022 produced 20 Saugeye (40/hour) ranging from 10 - 19.5 inches in length. Growth appears excellent, as stocked fingerlings are reaching 18 inches in just 2 growing seasons. Although Walleye were stocked in Mallard Lake during 2019 and 2020, none were collected during the survey.



White bass are present in this lake. Six were collected during the fall netting survey, ranging in length from 7 to 16 inches. The largest White Bass collected was 2.1 lbs.

Location: Pyramid State Park is located south of Pinckneyville in Perry County. Mallard Lake is located on the Denmark Section of Pyramid State Park. The Denmark Section is accessed off of Pyatt-Cutler Road. From State Route 127 head west on Pyatt-Cutler Road. About 7 miles west of Pyramid State Park turn south into the Denmark Section.

Description: Mallard Lake is located on the Denmark Section of Pyramid State Park. Facilities at this 66-acre strip cut lake include a boat launch, floating dock, and bathrooms.

History and Status of the Sport Fishery: Thanks to upgraded equipment, electrofishing is now an effective sampling tool for this lake.
The 2021 spring nocturnal electrofishing survey was the first conducted on Green Wing Lake. All fishery information prior to 2021 was based on spring trap net surveys. The spring electrofishing survey indicated a very good Largemouth Bass fishery. A fall netting survey (trap nets and gill nets) was also conducted and indicated the lake harbors Channel Catfish and White Bass in limited numbers.

A targeted fall electrofishing survey was conducted for Walleye/Saugeye on November 1, 2022. A total of 20 Saugeye were collected (40/hour). No Walleye were collected. The Saugeye fishery appears to be developing well and should provide good opportunities for anglers. Note that statewide regulations apply for Saugeye/Walleye: 6 fish/day combined, 14-inch minimum length limit.

Additional Lake Information: Note: There is no motor HP limit, but all boats must be operated at no wake speed.

Site-specific Regulations:
Largemouth bass: 5 fish under 14” and fish 1 over 18” limit, 14–18 inch protected slot (no possession)
Bluegill or redear sunfish: 25 fish daily limit
Crappie: 25 fish daily limit
Channel catfish: 6 fish daily limit
Muskellunge: 48-inch minimum length limit

2 pole and line fishing only and bowfishing is allowed. All live bait in excess of 8" must be rigged with a quick set rig.

Please note that fishing is prohibited from November 1 through the last day of February except within the designated area between the boat launch and marker buoy. Legal fishing hours from November 1 through the last day of February are from one half hour before sunrise to 2 p.m.

Maps of fish attractor locations can be obtained via the link on this page that says "Fish Attractor Locations Map".

Contact Information:
Pyramid State Park:
IDNR Fisheries Biologist, Nick Abell

There were 1 tournaments held on this waterbody in 2022.

Species Total Fish Caught
Largemouth Bass 43

Top 5 Largemouth Bass caught on this waterbody in 2022 tournaments:

1     5.38 lbs
2     4.38 lbs

Top 5 Total Tournament Weight of Largemouth Bass caught on this waterbody in 2022 tournaments:

1 87.44 lbs