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Lake Information

County: Ogle

Acreage: 77

Recreational Amenities

Boat Fishing? Electric only

Boat Ramps? Yes

Boat Rental? No

Skiing? No

Swimming? No

Picnicking? Yes

Camping? No

There are no zebra mussels in this lake.

Fishing Outlook  ( Full PDF Report )

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Fish Status



The largemouth bass population has been down for the past two years. Heavy algae blooms in the late summer combined with a dense sunfish population have decreased largemouth bass spawning efforts. To increase largemouth bass numbers, an increased number of late summer sub-adult sized largemouth bass will be stocked. Historically the Largemouth bass population has been characterized by fish with good body condition and fast growth.


Very Good

Muskie have been stocked at Lake Sule since 1992 in hopes of using the rough fish population for food. The Muskie population is characterized by good body condition and fast growth. Fish up to 45 inches have been sampled in the past few years with an average size Muskie being 36 inches.

Location: Lake Sule is located at the junction of I39 and I88 southeast of Rochelle in Ogle County Illinois.

Description: Lake Sule is a 77 acre borrow pit that was built during the construction of Interstate 39. Digging commenced in 1979 and the lake was formed in January 1982. The lake is part of a large drainage pattern, and its outfall is a major tributary of the Kyte Creek. The deed to the lake is held by the Flagg-Rochelle Park District, and its major use is recreational fishing. By 1994, a boat launch and an access were developed for fishermen. The lake has a maximum depth of 20 feet with an average depth of 12 feet.

History and Status of the Sport Fishery: As a tributary to the Rock River, the fishery at Lake Sule is made up of many riverine fishes found in the Rock River drainage.

Additional Lake Information: All fish: 2 pole and line fishing only.

Site Regulations:
Large or smallmouth bass: 1 fish daily limit; 14" minimum length limit
Bluegill or redear sunfish: 5 fish daily limit (no minimum length limit)
Channel catfish: 6 fish daily limit (no minimum length limit)
Muskellunge: 1 fish daily limit; 36˝ minimum length limit
Striped, white, or hybrid striped bass greater than 17”: 3 fish daily limit (17" minimum length limit)
Striped, white, or hybrid striped bass less than 17”: No daily limit; no minimum length limit
Walleye, Sauger, or Hybrid Walleye: 6 fish daily limit; 18" minimum length limit
White, Black, or Hybrid Crappie: 10 fish daily limit (no minimum length limit)

Contact Information:
Flagg-Rochelle Park District
IDNR Fisheries Biologist, Brennan Caputo