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Fishing Marble Lake: what the data says
173-acre lake near Dickenson County. Iowa DNR survey water. The lake tops out around 7 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. What follows comes from the same scoring engine that paints the spots above.
Largemouth Bass fishing at Marble Lake
Start shallow in spring: largemouth bass sit in 1 to 7 ft that time of year. Summer fish stay in 2 to 7 ft, and winter fish hold in 2 to 7 ft. If you only fish one area, make it Shallow bay flat: a weed flat around 2 ft that scores prime in spring. In summer the feeding windows fall in early morning and the evening. A texas-rigged 10" worm or a deep-diving crankbait covers the summer program.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 1 to 7 ft | dawn & dusk | Spinnerbait, Chatterbait |
| Summer | 2 to 7 ft | dawn & dusk | Texas-rigged 10" worm, Deep-diving crankbait |
| Fall | 2 to 7 ft | midday & dawn | Squarebill crankbait (shad), Spinnerbait |
| Winter | 2 to 7 ft | midday | Blade bait, Jigging spoon |
Bluegill fishing at Marble Lake
Start shallow in spring: bluegill sit in 1 to 6 ft that time of year. Summer pushes them deeper, 2 to 7 ft, and winter fish settle into 2 to 7 ft. The spot to know is Shallow bay flat, a weed flat in about 2 ft of water that rates prime for bluegill in spring. 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 | 2 to 7 ft | dawn & dusk | Small sponge spider (fly), Micro tube jig |
| Fall | 2 to 7 ft | midday | Micro jig + waxworm, Small spoon tipped |
| Winter | 2 to 7 ft | midday | Tungsten ice jig + plastic, Tiny spoon |
Crappie fishing at Marble Lake
In spring, crappie run shallow here, mostly 2 to 7 ft. Summer fish stay in 2 to 7 ft, and winter fish hold in 2 to 7 ft. Deep basin is the standout, a deep basin at roughly 6 ft, rated prime for winter crappie. 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 7 ft | midday & dawn | 1/16 oz jig + tube, Curly-tail grub |
| Summer | 2 to 7 ft | dawn & dusk | Jig trolled/spider-rigged, Small crankbait (trolled) |
| Fall | 2 to 7 ft | dawn | Jig + minnow combo, Small swimbait (1.5-2") |
| Winter | 2 to 7 ft | midday | Tungsten jig + soft plastic, Tiny jigging spoon |
Yellow Perch fishing at Marble Lake
Start shallow in spring: yellow perch sit in 2 to 7 ft that time of year. Summer fish stay in 2 to 7 ft, and winter fish hold in 2 to 7 ft. The spot to know is Shallow bay flat, a weed flat in about 2 ft of water that rates prime for yellow perch in spring. In summer the feeding windows fall in early morning. A drop-shot micro plastics or a small spoon tipped with worm covers the summer program.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 2 to 7 ft | midday & dawn | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 2 to 7 ft | dawn | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 2 to 7 ft | midday | Jigging spoon (small), Perch rig / spreader |
| Winter | 2 to 7 ft | midday & dawn | Tungsten jig + spikes, Rattle spoon (small) |
Channel Catfish fishing at Marble Lake
Start shallow in spring: channel catfish sit in 2 to 7 ft that time of year. Summer fish stay in 2 to 7 ft, and winter fish hold in 2 to 7 ft. If you only fish one area, make it Deep basin: a deep basin around 6 ft that scores prime in winter. In summer the feeding windows fall in after dark and the evening.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 2 to 7 ft | dusk | |
| Summer | 2 to 7 ft | night & dusk | |
| Fall | 2 to 7 ft | dusk | |
| Winter | 2 to 7 ft | midday |
Notable structure
- Deep basin: deep basin, around 6 ft
- Break off the point: drop-off, around 4 ft
- Main-lake point: point, around 2 ft
- Secondary point: point, around 2 ft
- Shallow bay flat: weed flat, around 2 ft
- Back-bay flat: weed flat, around 2 ft
Common questions
How deep is Marble Lake?
Marble Lake is about 7 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 Marble Lake?
Anglers target largemouth bass, crappie, bluegill, channel catfish, yellow perch on Marble Lake.
Where is the best fishing spot on Marble 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 Marble 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
Spirit Lake · Center Lake · East Okoboji Lake · West Okoboji Lake · Upper Gar Lake · Minnewashta Lake
See how Marble Lake stacks up: best largemouth bass lakes in Iowa · best crappie lakes in Iowa · best bluegill lakes in Iowa · best channel catfish lakes in Iowa
Browse all Iowa fishing maps or every water on DepthScout. Bathymetry credit: state fisheries survey programs. How we build these maps. For fishing guidance only, never navigation.