Sign inSign up freeRecent catches at Diamond Lake
Shared by DepthScout anglers. Exact spots stay private, always.
Fishing Diamond Lake: what the data says
152-acre lake near Illinois. The lake tops out around 25 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. Below is the species-by-species picture, pulled from the same data the map uses.
Bluegill fishing at Diamond Lake
Spring bluegill on Diamond Lake hold shallow, usually 1 to 6 ft. By summer they slide out to 4 to 15 ft, and by winter most fish are in 10 to 25 ft. Shallow bay flat is the standout, a weed flat at roughly 3 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 | 10 to 25 ft | midday | Tungsten ice jig + plastic, Tiny spoon |
Channel Catfish fishing at Diamond Lake
In spring, channel catfish run shallow here, mostly 3 to 12 ft. Summer pushes them deeper, 8 to 25 ft, and winter fish settle into 8 to 25 ft. Deep basin is the standout, a deep basin at roughly 21 ft, rated prime for winter channel catfish. 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 | 8 to 25 ft | dusk | |
| Winter | 8 to 25 ft | midday |
Common Carp fishing at Diamond Lake
In spring, common carp run shallow here, mostly 2 to 10 ft. They move out to 3 to 15 ft in summer and finish the year down in 8 to 25 ft. If you only fish one area, make it Shallow bay flat: a weed flat around 3 ft that scores prime in spring. Best bite is early morning and the evening.
| 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 | 8 to 25 ft | midday |
Crappie fishing at Diamond Lake
Start shallow in spring: crappie sit in 2 to 8 ft that time of year. Summer pushes them deeper, 10 to 25 ft, and winter fish settle into 8 to 25 ft. Deep basin is the standout, a deep basin at roughly 21 ft, rated prime for winter crappie. Plan around early morning and the evening in the warm months. A jig trolled/spider-rigged or a small crankbait (trolled) covers the summer program.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | 1/16 oz jig + tube, Curly-tail grub |
| Summer | 10 to 25 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 | 8 to 25 ft | midday | Tungsten jig + soft plastic, Tiny jigging spoon |
Largemouth Bass fishing at Diamond 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 8 to 25 ft. Shallow bay flat is the standout, a weed flat at roughly 3 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 | 8 to 25 ft | midday | Blade bait, Jigging spoon |
Muskellunge fishing at Diamond Lake
In spring, muskellunge run shallow here, mostly 3 to 12 ft. They move out to 8 to 25 ft in summer and finish the year down in 8 to 25 ft. Break off the point is the standout, a drop-off at roughly 11 ft, rated prime for fall muskellunge. Plan around the evening and early morning in the warm months. Tie on a double-10 bucktail or a topwater (walk-the-dog / creeper) and you're in the game.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 3 to 12 ft | dusk | Smaller bucktail (#8 blades), 6" glide bait |
| Summer | 8 to 25 ft | dusk & dawn | Double-10 bucktail, Topwater (walk-the-dog / creeper) |
| Fall | 7 to 25 ft | midday & dusk | Big rubber (Bull Dawg style), 10"+ glide bait |
| Winter | 8 to 25 ft | midday | Large rubber, crawled slow |
Diamond Lake also holds northern pike (8 to 20 ft in summer), yellow perch (8 to 25 ft in summer). Pick any of them on the map above for rated spots and bait picks.
Notable structure
- Deep basin: deep basin, around 21 ft
- Break off the point: drop-off, around 11 ft
- Main-lake point: point, around 8 ft
- Secondary point: point, around 8 ft
- Shallow bay flat: weed flat, around 3 ft
- Back-bay flat: weed flat, around 3 ft
- Dock / pier line: dock line, around 2 ft
- Dock / pier line: dock line, around 0 ft
Common questions
How deep is Diamond Lake?
Diamond Lake is about 25 ft (8 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 Diamond Lake?
Anglers target largemouth bass, northern pike, crappie, bluegill, channel catfish, muskellunge, yellow perch, common carp on Diamond Lake.
Where is the best fishing spot on Diamond Lake?
Shallow bay flat is the top-rated area: a weed flat in about 3 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 Diamond 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
Sand Lake · Cedar Lake · Boulder Lake · McCullom Lake · Fox River · Des Plaines River
See how Diamond Lake stacks up: best largemouth bass lakes in Illinois · best northern pike lakes in Illinois · best crappie lakes in Illinois · best bluegill lakes in Illinois
Browse all Illinois fishing maps or every water on DepthScout. How we build these maps. For fishing guidance only, never navigation.