Williamson County · reservoir · 905 acres
Little Grassy Lake
Stocked 3× since 2022 · Illinois DNR
Little Grassy Lake is a reservoir in Williamson County, Illinois, stocked with Channel Catfish and Smallmouth Bass — most recently on Jan 1, 2024. FishableWaters aggregates every stocking record for this water from Illinois DNR; the latest schedule and today's bite windows are above.
Best days this week
Days near a new or full moon tend to fish best.
Today's bite windows
Conditions, next 3 days
Today
Overcast
88°
67°
10 mph
30%
Sat
Rain
77°
67°
11 mph
47%
Sun
Drizzle
78°
66°
12 mph
32%
↘ pressure fallingFalling pressure ahead of a front often turns the bite on.
Stocking ledger
| — 2024 — | ||||
| Jan 1 | Channel Catfish | 866 | 5.5" | |
| — 2023 — | ||||
| Jan 1 | Smallmouth Bass | 11,600 | 2" | |
| — 2022 — | ||||
| Jan 1 | Channel Catfish | 5,000 | 5.5" | |
Angler reports
What's biting
No reports yet — be the first
Best bite times
No reports yet
Field notes
No notes yet
All Illinois waters with channel catfish → · All Illinois waters with smallmouth bass →
Nearby waters
- Spring Arbor Lake1.8 mi
- Devils Kitchen Lake2.4 mistocked Jan 1, 2026
- Lost Branch4.0 mi
- Indian Creek4.7 mi
- Little Grassy Creek4.8 mi
- Caney Branch4.6 mi
- Grassy Creek5.0 mi
- Sycamore Creek5.7 mi
Seasons, limits, and rules are the state's call — check the official IL regulations and buy your license before you go. We link the source; we never restate the rules.
Little Grassy Lake fishing — FAQ
What fish are stocked in Little Grassy Lake?+
Little Grassy Lake is stocked with Channel Catfish and Smallmouth Bass in Williamson County, Illinois, most recently on Jan 1, 2024 by Illinois DNR. The full stocking ledger is on this page.
Do I need a license to fish Little Grassy Lake?+
Yes — Illinois requires a fishing license. Buy one from the state and check current seasons and limits before you go; both are linked on this page.
Where is Little Grassy Lake?+
Little Grassy Lake is a reservoir in Williamson County, Illinois. Driving directions and an interactive topo map are on this page.
Data: Illinois DNR · updated Jan 1, 2024 · checked daily · we publish what agencies publish, nothing else.