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Fishing Little Grassy Lake: what the data says
905-acre lake near Illinois. The lake tops out around 65 ft. The contours are modeled from the water's real shoreline and maximum depth. Treat them as a rough guide, and never use them for navigation. Here is how the season plays out for each species, straight from the data behind the map.
Bluegill fishing at Little Grassy Lake
In spring, bluegill run shallow here, mostly 1 to 6 ft. Summer pushes them deeper, 4 to 15 ft, and winter fish settle into 10 to 25 ft. Shallow bay flat is the standout, a weed flat at roughly 6 ft, rated prime for spring bluegill. Best bite is early morning and the evening. Tie on a small sponge spider (fly) or a micro tube jig and you're in the game.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 1 to 6 ft | midday & dusk | 1/32 oz jig + micro plastic, Tiny popper (evenings) |
| Summer | 4 to 15 ft | dawn & dusk | Small sponge spider (fly), Micro tube jig |
| Fall | 6 to 18 ft | midday | Micro jig + waxworm, Small spoon tipped |
| Winter | 10 to 25 ft | midday | Tungsten ice jig + plastic, Tiny spoon |
Channel Catfish fishing at Little Grassy Lake
Spring channel catfish on Little Grassy Lake hold shallow, usually 3 to 12 ft. They move out to 8 to 25 ft in summer and finish the year down in 20 to 40 ft. The spot to know is Creek inflow, a inflow / creek mouth in about 7 ft of water that rates prime for channel catfish in spring. Best bite is after dark and the evening.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 3 to 12 ft | dusk | |
| Summer | 8 to 25 ft | night & dusk | |
| Fall | 10 to 30 ft | dusk | |
| Winter | 20 to 40 ft | midday |
Largemouth Bass fishing at Little Grassy Lake
In spring, largemouth bass run shallow here, mostly 2 to 10 ft. Summer pushes them deeper, 8 to 20 ft, and winter fish settle into 15 to 35 ft. Shallow bay flat is the standout, a weed flat at roughly 6 ft, rated prime for spring largemouth bass. Best bite is early morning and the evening. Tie on a texas-rigged 10" worm or a deep-diving crankbait and you're in the game.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 2 to 10 ft | dawn & dusk | Spinnerbait, Chatterbait |
| Summer | 8 to 20 ft | dawn & dusk | Texas-rigged 10" worm, Deep-diving crankbait |
| Fall | 4 to 15 ft | midday & dawn | Squarebill crankbait (shad), Spinnerbait |
| Winter | 15 to 35 ft | midday | Blade bait, Jigging spoon |
Notable structure
- Deep basin: deep basin, around 55 ft
- Break off the point: drop-off, around 29 ft
- Main-lake point: point, around 16 ft
- Secondary point: point, around 16 ft
- Dock / pier line: dock line, around 10 ft
- Creek inflow: inflow / creek mouth, around 7 ft
- Creek inflow: inflow / creek mouth, around 7 ft
- Shallow bay flat: weed flat, around 6 ft
- Back-bay flat: weed flat, around 6 ft
- Dock / pier line: dock line, around 6 ft
- Dock / pier line: dock line, around 6 ft
- Dock / pier line: dock line, around 2 ft
- Dock / pier line: dock line, around 0 ft
- Dock / pier line: dock line, around 0 ft
Common questions
How deep is Little Grassy Lake?
Little Grassy Lake is about 65 ft (20 m) deep at its deepest point. The contours here are modeled from the water's real shape and maximum depth, so treat them as a rough guide.
What fish are in Little Grassy Lake?
Anglers target largemouth bass, bluegill, channel catfish on Little Grassy Lake.
Where is the best fishing spot on Little Grassy Lake?
Shallow bay flat is the top-rated area: a weed flat in about 6 ft of water that rates prime for bluegill in spring. Open the map above to see every rated spot for each species and season.
When is the best time to fish Little Grassy Lake?
For bluegill, the summer bite is best in early morning and the evening. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.
Nearby waters
Devils Kitchen Lake · Crab Orchard Lake · Cedar Lake · Dutchman Lake · Lake Murphysboro · Kinkaid Lake
See how Little Grassy Lake stacks up: best largemouth bass lakes in Illinois · best bluegill lakes in Illinois · best channel catfish lakes in Illinois
Browse all Illinois fishing maps or every water on DepthScout. How we build these maps. For fishing guidance only, never navigation.