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Fishing Lake Marion: what the data says
90,000-acre reservoir near Santee. The lake tops out around 77 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 Lake Marion
Spring largemouth bass on Lake Marion hold shallow, usually 2 to 10 ft. They move out to 8 to 20 ft in summer and finish the year down in 15 to 35 ft. The spot to know is Shallow bay flat, a weed flat in about 6 ft of water that rates prime for largemouth bass in spring. Plan around early morning and the evening in the warm months. Summer baits: a texas-rigged 10" worm or a deep-diving crankbait gets it done.
| 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 |
Striped Bass fishing at Lake Marion
Start shallow in spring: striped bass sit in 5 to 20 ft that time of year. Summer pushes them deeper, 25 to 60 ft, and winter fish settle into 20 to 50 ft. Deep basin is the standout, a deep basin at roughly 36 ft, rated prime for summer striped bass. Plan around early morning and the evening in the warm months. A flutter spoon (deep) or a umbrella rig (trolled) covers the summer program.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 5 to 20 ft | dawn & dusk | Bucktail jig + trailer, Walking topwater (dawn) |
| Summer | 25 to 60 ft | dawn & dusk | Flutter spoon (deep), Umbrella rig (trolled) |
| Fall | 10 to 35 ft | dawn & dusk | Topwater walker, Jerkbait |
| Winter | 20 to 50 ft | midday | Alabama rig (slow), Flutter spoon |
Crappie fishing at Lake Marion
Spring crappie on Lake Marion hold shallow, usually 2 to 8 ft. Summer pushes them deeper, 10 to 25 ft, and winter fish settle into 15 to 35 ft. The spot to know is Deep basin, a deep basin in about 36 ft of water that rates prime for crappie in winter. Best bite is early morning and the evening. Summer baits: a jig trolled/spider-rigged or a small crankbait (trolled) gets it done.
| 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 | 15 to 35 ft | midday | Tungsten jig + soft plastic, Tiny jigging spoon |
Bluegill fishing at Lake Marion
Spring bluegill on Lake Marion 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. If you only fish one area, make it Shallow bay flat: a weed flat around 6 ft that scores prime in spring. Best bite is early morning and the evening. Summer baits: a small sponge spider (fly) or a micro tube jig gets it done.
| 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 Lake Marion
Spring channel catfish on Lake Marion 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 Deep basin, a deep basin in about 36 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 | 8 to 25 ft | night & dusk | |
| Fall | 10 to 30 ft | dusk | |
| Winter | 20 to 40 ft | midday |
Blue Catfish fishing at Lake Marion
Spring blue catfish on Lake Marion hold shallow, usually 5 to 25 ft. By summer they slide out to 10 to 40 ft, and by winter most fish are in 20 to 50 ft. If you only fish one area, make it Deep basin: a deep basin around 36 ft that scores prime in winter. Best bite is early morning and the evening.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 5 to 25 ft | dusk | |
| Summer | 10 to 40 ft | dawn & dusk | |
| Fall | 15 to 45 ft | dusk | |
| Winter | 20 to 50 ft | midday |
Lake Marion also holds flathead catfish (8 to 30 ft in summer). Pick any of them on the map above for rated spots and bait picks.
Notable structure
- Deep basin: deep basin, around 36 ft
- Break off the point: drop-off, around 35 ft
- Shallow feeding flat: feeding flat, around 20 ft
- Main-lake point: point, around 19 ft
- Secondary point: point, around 19 ft
- Sharp break: drop-off, around 18 ft
- Sharp break: drop-off, around 14 ft
- Feeding flat: feeding flat, around 11 ft
- Shallow feeding flat: feeding flat, around 10 ft
- Shallow bay flat: weed flat, around 6 ft
- Back-bay flat: weed flat, around 6 ft
- Shoreline point: point, around 5 ft
- Rock reef: rock pile, around 4 ft
- Shoreline point: point, around 4 ft
Common questions
How deep is Lake Marion?
Lake Marion is about 77 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 Lake Marion?
Anglers target largemouth bass, crappie, bluegill, channel catfish, striped bass, flathead catfish, blue catfish on Lake Marion.
Where is the best fishing spot on Lake Marion?
Shallow bay flat is the top-rated area: a weed flat in about 6 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 Lake Marion?
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
Lake Moultrie · Congaree River · Saluda River (Lower) · Calibogue Sound · Neal Shoals Reservoir · Stevens Creek Reservoir
See how Lake Marion stacks up: best largemouth bass lakes in South Carolina · best crappie lakes in South Carolina · best bluegill lakes in South Carolina · best channel catfish lakes in South Carolina
Browse all South Carolina fishing maps or every water on DepthScout. Bathymetry credit: state fisheries survey programs. How we build these maps. For fishing guidance only, never navigation.