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Lake Information

County: Macoupin

Acreage: 765

Average Depth: 19.82 feet

Shoreline Length: 38.4 miles

Recreational Amenities

Boat Fishing? 115hp

Boat Ramps? Yes

Boat Rental? No

Skiing? Yes

Swimming? No

Picnicking? Yes

Camping? Yes

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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

Our spring 2015 species evaluation sample yielded channel catfish ranging from 12” to 24.5”, and maxing the scale at 5.6 lbs. 28% attained 2 pounds, 9.3% reached 4 pounds, and none exceeded 6 pounds in total weight. Site Regulation: 6 fish daily creel limit.


Very Good

During March of 2015, striped bass hybrids measured from 10.9” to 26.4”, and topped the scale at 9.2 pounds. 39.3% were at least 4 pounds, 14.3% met 6 pounds, and 7.1% attained 8 pounds or better. Site Regulation: 3 fish 17” or longer; 10 fish daily creel limit.


Very Good

Site Regulation: 15” minimum length limit; 3 fish daily creel limit.


Very Good

During this survey we boated muskie measuring from 30.7” to 39.4” and weighing up to 18.7 pounds. 92.9% made it to 32”, 78.6% reached 34”, and 35.7% topped 36” in total length.Site Regulation: 48” minimum length limit; 1 fish daily creel limit.



During our spring field work we collected white bass ranging from 11.4” to 17.6”, and weighing up to 2.6 pounds. 80% were 12”, 20% measured 14”, and 20% grew to 16” in size. Site Regulation: 3 fish 17” or longer; 10 fish daily creel limit.

Location: Otter Lake is located in north central Macoupin County 6 miles west of Girard, IL.

Description: Otter Lake is named after Otter Creek, which was dammed to provide flood control, water-based recreation, and potable water for surrounding towns. This beautiful central Illinois Lake was built in 1968, and has provided wonderful fishing opportunities since. The lake is 765 acres, has a shoreline length of 39 miles, a watershed size of 12,985 acres, a maximum depth of 51 feet, and an average depth of 20 feet.

History and Status of the Sport Fishery: Approximately 20 species occupy this eutrophic impoundment. Otter Lake receives stockings of 10" to 14" muskie, 4" to 8" largemouth bass, and 2" striped bass hybrids.

Additional Lake Information: Otter Lake has a 115 hp motor size limit. There is a single boat ramp at mid-lake on the north side of Palmyra blacktop. The site has a concession stand/bait shop, campground, and picnic areas. All live bait in excess of 8" must be rigged with a quick set rig. 2 pole and line fishing only.

Contact Information:
Otter Lake Water Commission
Jeff Pontnack, IDNR County Fisheries Biologist:

2017 Approved or Pending Tournaments
Start Date End Date
(if different from start)
ID Ramp Location Bank/Boat
Max Boats Species Public?
July-295266Otter Lake Main Ramp boat
30Largemouth Bass
August-125267Otter Lake Main Ramp boat
30Largemouth Bass
August-277102Otter Lake Main Ramp boat
30Largemouth Bass
September-105464Otter Lake Main Ramp boat
20Largemouth Bass