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Lake Information

County: Winnebago

Acreage: 147

Average Depth: 11.19 feet

Shoreline Length: 4.2 miles

Recreational Amenities

Boat Fishing? Unrestricted, over 10 hp no wake speed

Boat Ramps? Yes

Boat Rental? Yes

Skiing? No

Swimming? No

Picnicking? Yes

Camping? Yes

larger map link

Maps are not intended for navigation.

There are zebra mussels in this lake.

Fishing Outlook  ( Full PDF Report )

Click here for a list of all reports.



Fish Status



The Largemouth bass population has turned around in the past two years. In 2018 11% of the sample was greater than 15 inches. The largest Largemouth bass in the 2017 sample was 20 inches long and weighed 4 pounds. Smallmouth bass are present but, in low numbers. Site Regulation: 1 Fish Daily Creel Limit (15" Minimum Length Limit)



Muskie were stocked in Pierce Lake to provide a trophy predator species. Muskie are stocked at a rate of 1 fish per acre annually. The spring trap netting catch rate was 1.6 fish per net night. The largest fish sampled in 2018 was a 43.5 inch female that weighed 24.5 pounds. 1 Fish Daily creel Limit (48" Minimum Length Limit)



The Walleye population is strong with 80% of the fish sampled in 2018 over the 14 inch minimum length limit. Previous creel samples showed 58 pounds of Walleye per acre harvested, which is the highest harvest pounds of any northern Illinois lakes. Walleye are stocked annually at a rate of 50 per acre. Site Regulation: 6 Fish Daily Creel Limit (14" Minimum Length Limit)

Location: Pierce Lake is situated in Rock Cut State Park on the northeast side of Rockford.

Description: Pierce Lake was constructed in 1960 by damming Willow Creek. Pierce Lake is 162 surface acres with a maximum depth of 36 feet and an average depth of 12.5 feet. It has a watershed of 8,150 acres and 4.9 miles of shoreline.

History and Status of the Sport Fishery: Pierce Lake receives an annual stocking of channel catfish, walleye and muskie. Largemouth and smallmouth bass are stocked when weak year classes have been identified.

Additional Lake Information: A two-lane concrete boat ramp with car/trailer parking is available. Any size engine is allowed on Pierce Lake; however, engines over 10hp can only operate at no-wake speed. The concessionaire offers boat rentals, bait, and tackle and has a restaurant. Concession Phone: 815-885-4740.

Two-Pole and Line Fishing Only with the exception of carp, which can be taken by bow and arrow from May 1st to June 30th.

Contact Information:
Rock Cut State Park:
IDNR Fisheries Biologist, Brennan Caputo

There were 2 tournaments held on this waterbody in 2019.

Species Total Fish Caught
Largemouth Bass 12

Top 5 Largemouth Bass caught on this waterbody in 2019 tournaments:

1     4.40 lbs
2     4.28 lbs
3     2.31 lbs
4     2.28 lbs

Top 5 Bag Weights of Largemouth Bass caught on this waterbody in 2019 tournaments:

1 14.96 lbs
2 13.10 lbs

Multiple day tournaments are listed with * end date.

Interested in participating in one of these public tournaments? Contact us with tournament ID for more information.

2020 Approved or Pending Tournaments
Start Date ID Approval Ramp Location Bank/Boat
Max Boats Species Youth? Open to Public?
April-2215701PendingRock Cut SP - Main Ramp boat
14Largemouth Bass
Smallmouth Bass