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EAST FORK LAKE


Lake Information

County: Richland

Acreage: 935

Average Depth: 15.00 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

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There are no zebra mussels in this lake.


Fish Stocking

Year

Species

Size

Count

2024

Walleye

Fingerling 1 - 3"

32816


Additional information for stocking on East Fork Lake


Fishing Outlook  ( Full PDF Report )

Click here for a list of all reports.

Species

Rank

Fish Status

BLUEGILL

Good

The bluegill population structure remained fair and consistent with recent trends. Electrofishing catch rates increased to 303 per hour. Average bluegill body condition increased to the lake management target. There was another slight decrease in the number of bluegill greater than 7” (RSD-7=10) and the number of bluegill exceeding 8” remained low at under 1% of adult bluegill sampled. Angling for bluegill in 2025 should be good with most fish 5” – 7” in length and weighing 0.10 – 0.25 pounds.

CHANNEL CATFISH

Improving

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 above target at Wr=92. Most fish in 2025 will range from 18” – 24” and 2 – 4 pounds, with larger fish approaching 10 pounds. This lake provides good bank fishing opportunities and drift fishing the main lake is also very productive.

CRAPPIE

Good

The white crappie population structure remained good, but the average body condition for all sizes of white crappie was below target. The percentage of white crappie over 10” in length improved to 46%, while approximately 72% of the white crappie exceeded 9” in length. Black crappie are the more numerous species in East Fork Lake and their population also appeared to be doing well, but it was dominated by shorter fish than the white crappie population. Average black crappie body condition remained above the management target. Black crappie electrofishing catch rates remained high and the majority of the fish were between 8” – 10”. Approximately 28% of the adult black crappie collected in 2024 exceeded 9” long and 5% exceeded 10” long. Most angler catches in 2025 are likely to be white and black crappie in the 8” – 9.5” range weighing 0.25 – 0.45 pounds, with some larger white crappie exceeding 10” and 0.5 pounds.

LARGEMOUTH BASS

Good

In 2024, the electrofishing catch rate decreased to 134 per hour and the size structure of the population remained consistent with four-year trends. The 2024 sample showed a 30% increase in the percentage of adult bass in the 12” – 15” size class from 2023. However, there was a 17% decrease in the percentage of fish in 15” – 20” size class. Despite this decrease, 26% of the adult bass collected were over the 15” minimum length limit and 8% exceeded 18” long. Average body condition remained stable and above the lake management plan target at Wr=93. Gizzard shad are the primary forage for largemouth bass in East Fork Lake and they ranged from 3.1” – 11.8” long. Fishing prospects for 2025 should be good and similar to 2024, with most keeper bass ranging from 15” – 20” in length and weighing between 1.8 – 4.5 pounds.

WALLEYE

Good

The size structure of the walleye population remained good in 2024. The catch rate increased to 16 per hour during the electrofishing survey, remained stable at 3 fish per net-night in the fall netting survey, and decreased to 9 fish per net-night in the spring netting survey. Average body condition was much higher for walleye sampled in the spring (Wr=95), than it was for fish collected in the fall (Wr=84). Approximately 99% of the adult fish collected exceeded the 14” minimum length limit. With many fish in the 1.5 – 4 pound range, this lake should provide good fishing opportunities for walleye in 2025.

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.

Additional Lake Information: Two pole and line fishing only. ANNUAL CITY OF OLNEY BOAT STICKERS AND CITY OF OLNEY 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:
618-393-2130
IDNR Fisheries Biologist, Boone LaHood
618-393-6732

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.

2025 Approved or Pending Tournaments
Start Date ID Approval Ramp Location Bank/Boat
Hook/Bow
Max Boats Species Youth? Open to Public?
February-2228048ApprovedEast Fork Lake boat
hook
30Largemouth Bass
NoNo
March-0928357ApprovedEast Fork Lake boat
hook
10Largemouth Bass
NoNo
March-1527949ApprovedEast Fork Lake boat
hook
15Largemouth Bass
NoNo
March-1628774ApprovedEast Fork Lake boat
hook
30Largemouth Bass
NoYes
March-2227950ApprovedEast Fork Lake boat
hook
15Largemouth Bass
NoNo
March-2327315ApprovedEast Fork Lake boat
hook
30Largemouth Bass
YesNo
March-2928066ApprovedEast Fork Lake boat
hook
20Largemouth Bass
NoNo
April-05
*April-06
27861ApprovedEast Fork Lake boat
hook
20Largemouth Bass
NoNo
April-0628106ApprovedEast Fork Lake boat
hook
14Largemouth Bass
NoNo
April-1227209ApprovedEast Fork Lake boat
hook
60Largemouth Bass
YesYes
April-1327462ApprovedEast Fork Lake boat
hook
15Largemouth Bass
NoNo
April-1928049ApprovedEast Fork Lake boat
hook
30Largemouth Bass
NoNo
April-2627951ApprovedEast Fork Lake boat
hook
60Largemouth Bass
NoYes
April-2727608ApprovedEast Fork Lake boat
hook
10Largemouth Bass
NoNo
April-2728434ApprovedEast Fork Lake boat
hook
13Largemouth Bass
NoNo
May-0327819ApprovedEast Fork Lake boat
hook
30Largemouth Bass
NoNo
May-0427317ApprovedEast Fork Lake boat
hook
15Largemouth Bass
YesNo
May-0427842ApprovedEast Fork Lake boat
hook
15Largemouth Bass
NoNo
May-1028045ApprovedEast Fork Lake boat
hook
13Largemouth Bass
NoNo
May-10
*May-11
28568ApprovedEast Fork Lake boat
hook
10Blue Catfish
Channel Catfish
NoYes
May-1727952ApprovedEast Fork Lake boat
hook
40Largemouth Bass
NoYes
May-1827211ApprovedEast Fork Lake boat
hook
40Largemouth Bass
YesYes
May-2428050ApprovedEast Fork Lake boat
hook
30Largemouth Bass
NoNo
June-0727324ApprovedEast Fork Lake boat
hook
30Largemouth Bass
NoYes
June-1428051ApprovedEast Fork Lake boat
hook
30Largemouth Bass
NoNo
June-2127843ApprovedEast Fork Lake boat
hook
19Largemouth Bass
NoNo
June-27
*June-28
27953ApprovedEast Fork Lake boat
hook
10Largemouth Bass
NoNo
June-2927484ApprovedEast Fork Lake boat
hook
15Largemouth Bass
NoNo
July-0527820ApprovedEast Fork Lake boat
hook
15Largemouth Bass
NoNo
July-0628310ApprovedEast Fork Lake boat
hook
10Largemouth Bass
NoNo
July-1228052ApprovedEast Fork Lake boat
hook
30Largemouth Bass
NoNo
July-1328067ApprovedEast Fork Lake boat
hook
20Largemouth Bass
NoNo
July-19
*July-20
27845ApprovedEast Fork Lake boat
hook
19Largemouth Bass
NoNo
July-2027846ApprovedEast Fork Lake boat
hook
19Largemouth Bass
NoNo
July-2627954ApprovedEast Fork Lake boat
hook
15Largemouth Bass
NoNo
August-0228046ApprovedEast Fork Lake boat
hook
13Largemouth Bass
NoNo
August-0927823ApprovedEast Fork Lake boat
hook
30Largemouth Bass
NoNo
August-1627824ApprovedEast Fork Lake boat
hook
30Largemouth Bass
NoNo
August-2327848ApprovedEast Fork Lake boat
hook
19Largemouth Bass
NoNo
August-3028053ApprovedEast Fork Lake boat
hook
30Largemouth Bass
NoNo
September-06
*September-07
28152ApprovedEast Fork Lake boat
hook
20Largemouth Bass
NoNo
September-06
*September-07
28569ApprovedEast Fork Lake boat
hook
10Blue Catfish
Channel Catfish
NoYes
September-1328108ApprovedEast Fork Lake boat
hook
12Largemouth Bass
NoNo
September-1428360ApprovedEast Fork Lake boat
hook
17Largemouth Bass
NoNo
September-2028071ApprovedEast Fork Lake boat
hook
15Largemouth Bass
NoNo
October-0427541ApprovedEast Fork Lake boat
hook
10Largemouth Bass
NoNo
October-0427955ApprovedEast Fork Lake boat
hook
15Largemouth Bass
NoNo
October-11
*October-12
28080ApprovedEast Fork Lake boat
hook
18Largemouth Bass
NoNo
October-1927850ApprovedEast Fork Lake boat
hook
19Largemouth Bass
NoNo