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2,780-acre lake. Hydroacoustic-surveyed Florida lake (FWC). Standard Florida warmwater roster; species not individually verified. The lake tops out around 9 ft. The depth chart comes from Florida Fish and Wildlife Conservation Commission bathymetric survey data, so the contours are survey-derived rather than computer-modeled. Below is the species-by-species picture, pulled from the same data the map uses.
On the chart, Lake Marion draws 2,852 acres inside 24.9 miles of shoreline — 11 islands included. An index of 3.3 puts the bank firmly in maze territory: point after pocket after cove, every one a casting target. Nothing on this chart breaks 15 ft, which makes the whole surface littoral: weeds, bait and ambush cover everywhere. End to end it runs roughly 4 mi, about 2.1 mi across. The water lies in Polk County. For a second option, Lake Tracy lies 6 mi west.
The spring pattern is a shallow one: largemouth bass in 2 to 9 ft. The depth story barely changes: 3 to 9 ft through summer, 3 to 9 ft in winter. Top water on the chart: Grass flat 3, a weed flat in the 6 ft range, prime in spring. Time it for early morning and the evening. Summer baits: a texas-rigged 10" worm or a deep-diving crankbait gets it done.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 9 ft chart-limited; documented 2 to 10 ft | dawn & dusk | Grass flat 3 (6 ft) | Spinnerbait, Chatterbait |
| Summer | 3 to 9 ft chart-limited; documented 8 to 20 ft | dawn & dusk | Contour break 2 (9 ft) | Texas-rigged 10" worm, Deep-diving crankbait |
| Fall | 2 to 9 ft chart-limited; documented 4 to 15 ft | midday & dawn | Grass flat 3 (6 ft) | Squarebill crankbait (shad), Spinnerbait |
| Winter | 3 to 9 ft chart-limited; documented 15 to 35 ft | midday | Contour break 2 (9 ft) | Blade bait, Jigging spoon |
In spring, bluegill run shallow here, mostly 1 to 6 ft. Summer pushes them deeper, 2 to 9 ft, and winter fish settle into 3 to 9 ft. Grass flat 3 is the standout, a weed flat at roughly 6 ft, rated prime for spring bluegill. Time it for early morning and the evening. You won't need more than a small sponge spider (fly) or a micro tube jig most summer days.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 6 ft | midday & dusk | Grass flat 3 (6 ft) | 1/32 oz jig + micro plastic, Tiny popper (evenings) |
| Summer | 2 to 9 ft chart-limited; documented 4 to 15 ft | dawn & dusk | Grass flat 3 (6 ft) | Small sponge spider (fly), Micro tube jig |
| Fall | 3 to 9 ft chart-limited; documented 6 to 18 ft | midday | Grass flat 3 (6 ft) | Micro jig + waxworm, Small spoon tipped |
| Winter | 3 to 9 ft chart-limited; documented 10 to 25 ft | midday | Deepest hole (9 ft) | Tiny spoon |
Start shallow in spring: crappie sit in 2 to 8 ft that time of year. Summer pushes them deeper, 3 to 9 ft, and winter fish settle into 3 to 9 ft. The spot to know is Deepest hole, a deep basin in about 9 ft of water that rates prime for crappie in winter. Warm-month bites cluster around early morning and the evening. Throw a jig trolled/spider-rigged or a small crankbait (trolled) until the fish tell you otherwise.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | Grass flat 3 (6 ft) | 1/16 oz jig + tube, Curly-tail grub |
| Summer | 3 to 9 ft chart-limited; documented 10 to 25 ft | dawn & dusk | Grass flat 3 (6 ft) | Jig trolled/spider-rigged, Small crankbait (trolled) |
| Fall | 3 to 9 ft chart-limited; documented 8 to 20 ft | dawn | Contour break 2 (9 ft) | Jig + minnow combo, Small swimbait (1.5-2") |
| Winter | 3 to 9 ft chart-limited; documented 15 to 35 ft | midday | Deepest hole (9 ft) | Tungsten jig + soft plastic, Tiny jigging spoon |
The spring pattern is a shallow one: channel catfish in 2 to 9 ft. The depth story barely changes: 3 to 9 ft through summer, 3 to 9 ft in winter. Top water on the chart: Deepest hole, a deep basin in the 9 ft range, prime in winter. Time it for after dark and the evening.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 9 ft chart-limited; documented 3 to 12 ft | dusk | Grass flat 3 (6 ft) | |
| Summer | 3 to 9 ft chart-limited; documented 8 to 25 ft | night & dusk | Deepest hole (9 ft) | |
| Fall | 3 to 9 ft chart-limited; documented 10 to 30 ft | dusk | Deepest hole (9 ft) | |
| Winter | 3 to 9 ft chart-limited; documented 20 to 40 ft | midday | Deepest hole (9 ft) |
The chart marks 11 structure features on Lake Marion; the deepest is Deepest hole at about 9 ft.
Season dates, license requirements, and size and bag limits for Florida waters are set by the Florida Fish and Wildlife Conservation Commission — and special regulations can apply to Lake Marion specifically, so confirm the current rules before you fish.
Check the official Florida fishing regulations →
Lake Marion is about 9 ft (3 m) deep at its deepest point. The depth chart comes from Florida Fish and Wildlife Conservation Commission bathymetric survey data, so the contours are survey-derived rather than computer-modeled.
Anglers target largemouth bass, bluegill, crappie, channel catfish on Lake Marion.
Grass flat 3 is the top-rated area: a weed flat in about 6 ft of water that rates prime for largemouth bass in spring. The interactive chart above rates every spot for each species and season.
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.
Fishing on Lake Marion is regulated by the Florida Fish and Wildlife Conservation Commission. Check the official Florida regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Lake Tracy 6 mi · Lake Pierce 7 mi · Lake Annie 7 mi · Lake Hamilton 7 mi · Lake Hatchineha 9 mi · Lake Fannie 10 mi · Lake Haines 11 mi · Lake Buckeye 11 mi · Lake Smart 11 mi · Lake Rochelle 11 mi · Lake Winterset 12 mi · Lake Roy 12 mi
See how Lake Marion stacks up: best largemouth bass lakes in Florida · best crappie lakes in Florida · best bluegill lakes in Florida · best channel catfish lakes in Florida
More water nearby: Polk County fishing maps (34 charts). Browse all Florida fishing maps. See every water on DepthScout. Depth data: Florida Fish and Wildlife Conservation Commission, Hydroacoustic lake surveys. How we build these maps. Fish here with a sonar unit that logs? Send us your depth data and we'll improve this chart, credited to you. For fishing guidance only, never navigation.