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Fishing Greenfield Lake: what the data says
42.4-acre reservoir near Greenfield. The lake tops out around 22 ft. The depth chart is built from real state fisheries GPS surveys, so the humps, channels and drop-offs you see are measured, not guessed. Below is the species-by-species picture, pulled from the same data the map uses.
Largemouth Bass fishing at Greenfield Lake
Spring largemouth bass on Greenfield Lake hold shallow, usually 2 to 10 ft. They move out to 8 to 20 ft in summer and finish the year down in 7 to 22 ft. The spot to know is Shallow bay flat, a weed flat in about 2 ft of water that rates prime for largemouth bass in spring. 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 | 7 to 22 ft | midday | Blade bait, Jigging spoon |
Bluegill fishing at Greenfield Lake
Start shallow in spring: bluegill sit in 1 to 6 ft that time of year. Summer pushes them deeper, 4 to 15 ft, and winter fish settle into 7 to 22 ft. Shallow bay flat is the standout, a weed flat at roughly 2 ft, rated prime for spring bluegill. Plan around early morning and the evening in the warm months. A small sponge spider (fly) or a micro tube jig covers the summer program.
| 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 | 7 to 22 ft | midday | Tungsten ice jig + plastic, Tiny spoon |
Crappie fishing at Greenfield Lake
Start shallow in spring: crappie sit in 2 to 8 ft that time of year. Summer pushes them deeper, 7 to 22 ft, and winter fish settle into 7 to 22 ft. The spot to know is Deep basin, a deep basin in about 22 ft of water that rates prime for crappie in winter. In summer the feeding windows fall in early morning and the evening. Tie on a jig trolled/spider-rigged or a small crankbait (trolled) and you're in the game.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | 1/16 oz jig + tube, Curly-tail grub |
| Summer | 7 to 22 ft | dawn & dusk | Jig trolled/spider-rigged, Small crankbait (trolled) |
| Fall | 8 to 20 ft | dawn | Jig + minnow combo, Small swimbait (1.5-2") |
| Winter | 7 to 22 ft | midday | Tungsten jig + soft plastic, Tiny jigging spoon |
Channel Catfish fishing at Greenfield Lake
Spring channel catfish on Greenfield Lake hold shallow, usually 3 to 12 ft. They move out to 7 to 22 ft in summer and finish the year down in 7 to 22 ft. The spot to know is Deep basin, a deep basin in about 22 ft of water that rates prime for channel catfish in winter. Plan around after dark and the evening in the warm months.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 3 to 12 ft | dusk | |
| Summer | 7 to 22 ft | night & dusk | |
| Fall | 7 to 22 ft | dusk | |
| Winter | 7 to 22 ft | midday |
Common Carp fishing at Greenfield Lake
Spring common carp on Greenfield Lake hold shallow, usually 2 to 10 ft. They move out to 3 to 15 ft in summer and finish the year down in 7 to 22 ft. The spot to know is Shallow bay flat, a weed flat in about 2 ft of water that rates prime for common carp in spring. Plan around early morning and the evening in the warm months.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 2 to 10 ft | midday & dawn | |
| Summer | 3 to 15 ft | dawn & dusk | |
| Fall | 5 to 18 ft | midday | |
| Winter | 7 to 22 ft | midday |
Notable structure
- Deep basin: deep basin, around 22 ft
- Back-bay flat: weed flat, around 10 ft
- Secondary point: point, around 6 ft
- Break off the point: drop-off, around 5 ft
- Main-lake point: point, around 2 ft
- Shallow bay flat: weed flat, around 2 ft
Common questions
How deep is Greenfield Lake?
Greenfield Lake is about 22 ft at its deepest point. The depth chart here comes from real state fisheries GPS surveys, so the contours reflect measured depths.
What fish are in Greenfield Lake?
Anglers target largemouth bass, crappie, bluegill, channel catfish, common carp on Greenfield Lake.
Where is the best fishing spot on Greenfield Lake?
Shallow bay flat is the top-rated area: a weed flat in about 2 ft of water that rates prime for largemouth bass in spring. Open the map above to see every rated spot for each species and season.
When is the best time to fish Greenfield Lake?
For largemouth bass, 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
Otter Lake · Carlinville Lake · Pittsfield Lake · Lake Springfield · Lake Glenn Shoals · Anderson Lake
See how Greenfield Lake stacks up: best largemouth bass lakes in Illinois · best crappie lakes in Illinois · best bluegill lakes in Illinois · best channel catfish lakes in Illinois
Browse all Illinois fishing maps or every water on DepthScout. Bathymetry credit: state fisheries survey programs. How we build these maps. For fishing guidance only, never navigation.