Choose another lake


Lake Information

County: Richland

Acreage: 935

Average Depth: 14.99 feet

Shoreline Length: 25 miles

Recreational Amenities

Boat Fishing? Unrestricted

Boat Ramps? Yes

Boat Rental? No

Skiing? Yes

Swimming? No

Picnicking? Yes

larger map link Dam Ramp

    Click on area names for a more detailed map.
    Dam, Boat Ramp

Maps are not intended for navigation.

There are no zebra mussels in this lake.

Fish Stocking






Channel Catfish

Non-vulnerable 8 - 10"




Fingerling 1 - 3"



Channel Catfish

Advanced Fingerling 4 - 7"




Fingerling 1 - 3"


Additional information for stocking on East Fork Lake

Fishing Outlook  ( Full PDF Report )

Click here for a list of all reports.



Fish Status



Black crappie are the more dominant species in East Fork Lake. Their population appeared to also be doing well and average body condition improved, remaining above their management target. Black crappie electrofishing catch rates remained high and the majority of the fish were between 8” – 10”. Approximately 22% of the adult black crappie collected in 2022 exceeded 9” long and only 3% exceeded 10” long. If growth rates remain good, the size structure of the populations should improve further in the coming years. Most angler catches in 2023 are likely to be white and black crappie in the 8” – 9” range weighing 0.2 – 0.4 pounds.



The bluegill population structure remained in good shape and consistent with recent trends. Average bluegill body condition remained at the lake management target. There was a slight decrease in the number of bluegill greater than 7” and the number of bluegill exceeding 8” remained low at just under 1% of adult bluegill sampled. Angling for bluegill in the coming year should be good with most keepers 5” – 8” in length and 0.10 – 0.33 pounds.



Catfish numbers have improved in recent years due to stocking efforts, but overall numbers have remained low in East Fork Lake. Average body condition remained good and above target. Most fish in 2023 will range from 15” – 22” and 1 – 3.5 pounds, with larger fish over 6 pounds. This lake provides good bank fishing opportunities and drift fishing the main lake is also very productive.



The size structure of the bass population remained similar to 2021. There was an increase in the percentage of bass in the 12” – 15” size range, and the percentage of adult bass exceeding the 15” minimum length limit decreased slightly from 33% to 31%. The electrofishing catch rate and the average body condition for all sizes of bass remained very good and above their lake management targets. Fishing prospects for the coming year should be good and similar to last year with most keeper bass ranging from 15” – 20” in length and weighing between 1.5 – 4 pounds.



The size structure and size of the walleye population remained good this year. The catch rate was 14 per hour during the electrofishing survey, 2 fish per net-night in the fall net survey, and 21 fish per net-night in the spring netting survey. Approximately 93% of the adult fish collected were 15” or longer and 96% exceeded the 14% minimum length limit. With many fish in the 2 – 5 pound range, this lake should provide good fishing opportunities for walleye in the coming year.



The white crappie population structure remained good. The average body condition for all sizes of white crappie remained above target. The percentage of white crappie over 10” in length improved to 24%, while approximately 68% of white crappie exceeded 9” in length. Most angler catches in 2023 are likely to be white and black crappie in the 8” – 9” range weighing 0.2 – 0.4 pounds, with some larger white crappie exceeding 10” and 0.5 pounds.

Location: East Fork Lake is located in Richland County, approximately 1 mile north of Olney Illinois.

Description: East Fork Lake was constructed by the City of Olney in 1971 to serve as a water supply reservoir. The lake has a surface area of 935 acres, a maximum depth of 40 feet, and a mean depth of 15 feet. The lake has 25 miles of shoreline and a watershed of 9,982 acres.

History and Status of the Sport Fishery: The sport fish population in East Fork Lake is comprised primarily of largemouth bass, bluegill, redear sunfish, white and black crappie, channel catfish, and is stocked annually with walleye. The lake also contains common carp, bowfin, and large yellow bullhead. The fish population is surveyed annually, and summaries below are based on the results of the most recent population survey and four-year trends in the population indices.

Additional Lake Information: Two pole and line fishing only. Annual boat stickers and City tournament permits are required. Boat stickers are available at Olney City Hall and local bait shops. Tournament permits are available at Olney City Hall.

Site Regulations:
Largemouth Bass: 6 fish daily limit; 15" minimum length limit
Walleye: 6 fish daily limit, 14" minimum length limit
White, Black, or Hybrid Crappie: 25 fish daily limit collectively
Bluegill or Redear Sunfish: 25 fish daily limit collectively
Channel Catfish: 6 fish daily limit

Contact Information:
East Fork Lake
Olney City Hall:
IDNR Fisheries Biologist, Boone LaHood

There were 62 tournaments held on this waterbody in 2022.

Species Total Fish Caught
Largemouth Bass 1588

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

1     6.12 lbs
2     5.87 lbs
3     5.75 lbs
4     5.52 lbs
5     5.48 lbs

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

1 278.71 lbs
2 278.60 lbs
3 227.24 lbs
4 197.53 lbs
5 195.28 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.

2023 Approved or Pending Tournaments
Start Date ID Approval Ramp Location Bank/Boat
Max Boats Species Youth? Open to Public?
October-0823264ApprovedEast Fork Lake boat
10Largemouth Bass
October-0823331ApprovedEast Fork Lake boat
8Largemouth Bass
October-1422951ApprovedEast Fork Lake boat
20Largemouth Bass
October-1423242ApprovedEast Fork Lake boat
10Largemouth Bass
October-1523012ApprovedEast Fork Lake boat
12Largemouth Bass
October-2223713ApprovedEast Fork Lake boat
15Largemouth Bass
24133ApprovedEast Fork Lake boat
8Largemouth Bass
Smallmouth Bass