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16,331-acre central St. Andrew Bay section with quality-assured NOAA BlueTopo and Hurricane Michael topobathymetric contours, FWC-surveyed fish occurrence, mapped seagrass, charted wrecks and verified public access. The water tops out around 71 ft. The depth chart is built from real agency bathymetry referenced to NAVD88; directly measured coverage remains distinguished from source interpolation. The channels, holes and drop-offs come from the source data, not a distance-from-shore model. What follows comes from the same scoring engine that paints the spots above.
Traced from the shoreline, Main St. Andrew Bay runs 16,358 acres with 67 miles of edge — 8 islands included. An index of 3.7 puts the bank firmly in maze territory: point after pocket after cove, every one a casting target. 45% of the surface is littoral (under ~15 ft) — cover, weeds and forage water. End to end it runs roughly 13.5 mi, about 6.3 mi across. Closest neighbour on DepthScout: Lake Martin, 5 mi east of here.
The spring pattern is a shallow one: gulf flounder in 2 to 14 ft. Midsummer fish sit out in 4 to 20 ft before dropping to 12 to 40 ft for winter. The spot to know is Shallow feeding flat, a feeding flat in about 16 ft of water that rates prime for gulf flounder in summer. Plan around early morning and the evening in the warm months. Summer baits: a paddletail dragged on bottom or a bucktail + swimming mullet gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 14 ft | dawn | Shallow feeding flat (16 ft) | 1/4 oz jighead + paddletail, Bucktail + scented shrimp |
| Summer | 4 to 20 ft | dawn & dusk | Shallow feeding flat (16 ft) | Paddletail dragged on bottom, Bucktail + swimming mullet |
| Fall | 6 to 28 ft | midday & dusk | Shallow feeding flat (16 ft) | 3/8 oz bucktail + scented grub, Paddletail on a heavier jighead |
| Winter | 12 to 40 ft | midday | open water | Slow jig + scented grub |
When the water first warms, spotted seatrout slide up into 2 to 10 ft. Summer is a 4 to 15 ft game here, winter a 5 to 20 ft one. Start at 2015 patchy (discontinuous) seagrass edge. It's a seagrass edge holding about 4 ft of water and rates prime come spring. The feeding windows run early morning. Keep a popping cork + shrimp or a 1/4 oz jighead + paddletail (deep grass edge) rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 10 ft | dawn & dusk | 2015 patchy (discontinuous) seagrass edge (4 ft) | Topwater walker, Suspending twitchbait |
| Summer | 4 to 15 ft | dawn | 2015 patchy (discontinuous) seagrass edge (4 ft) | Popping cork + shrimp, 1/4 oz jighead + paddletail (deep grass edge) |
| Fall | 3 to 12 ft | dawn | 2015 patchy (discontinuous) seagrass edge (4 ft) | Popping cork rig, Soft plastic jerkbait |
| Winter | 5 to 20 ft | midday & dusk | Surveyed channel edge (17 ft) | Suspending twitchbait (long pauses), Scented plastic crawled on bottom |
When the water first warms, gray snapper (mangrove snapper) slide up into 3 to 22 ft. Summer is a 4 to 30 ft game here, winter an 8 to 45 ft one. Start at Spanish Shanty Barge (Bay). It's an artificial reef holding about 11 ft of water and rates prime come fall. The feeding windows run early morning and the evening. Keep a small bucktail or a paddletail rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 22 ft | dawn & dusk | 2015 patchy (discontinuous) seagrass edge (4 ft) | Small paddletail, Jighead + shrimp imitation |
| Summer | 4 to 30 ft | dawn & dusk | Spanish Shanty Barge (Bay) (11 ft) | Small bucktail, Paddletail |
| Fall | 5 to 35 ft | dawn & dusk | Spanish Shanty Barge (Bay) (11 ft) | Small vertical jig, Jighead + paddletail |
| Winter | 8 to 45 ft | midday | Spanish Shanty Barge (Bay) (11 ft) | Small jig worked slowly |
Start shallow in spring: gag grouper sit in 4 to 24 ft that time of year. Warm water sends them out to 6 to 35 ft; cold water stacks them in 18 to 71 ft. Top water on the chart: 2015 patchy (discontinuous) seagrass edge, a seagrass edge in the 4 ft range, prime in spring. Fish it in early morning and the evening and you'll meet the bite. Throw a deep-diving plug or a heavy paddletail until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 24 ft | dawn & dusk | 2015 patchy (discontinuous) seagrass edge (4 ft) | Diving plug over grass potholes, Paddletail near rubble |
| Summer | 6 to 35 ft | dawn & dusk | Spanish Shanty Barge (Bay) (11 ft) | Deep-diving plug, Heavy paddletail |
| Fall | 10 to 50 ft | dawn | Spanish Shanty Barge (Bay) (11 ft) | Deep-diving plug, Vertical jig |
| Winter | 18 to 71 ft | midday | Dangerous NOAA charted wreck (35 ft) | Heavy vertical jig |
Main St. Andrew Bay carries 102 mapped structure features, topping out (or rather bottoming out) at Surveyed channel edge, about 45 ft down.
Access data: Florida FWC — Boat Ramp Inventory. Confirm conditions and fees locally before you launch.
Season dates, license requirements, and size and bag limits for Florida waters are set by the Florida Fish and Wildlife Conservation Commission (saltwater) — and special regulations can apply to Main St. Andrew Bay specifically, so confirm the current rules before you fish.
Check the official Florida fishing regulations →
Main St. Andrew Bay is about 71 ft (22 m) deep at its deepest point. The depth chart is built from real agency bathymetry referenced to NAVD88; directly measured coverage remains distinguished from source interpolation. The contours reflect measured and quality-assessed source depths.
Anglers target gulf flounder, spotted seatrout, gray snapper (mangrove snapper), gag grouper on Main St. Andrew Bay.
Spanish Shanty Barge (Bay) is the top-rated area: an artificial reef in about 11 ft of water that rates prime for gray snapper (mangrove snapper) in fall. Open the map above to see every rated spot for each species and season.
For gulf flounder, 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 Main St. Andrew Bay is regulated by the Florida Fish and Wildlife Conservation Commission (saltwater). 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 Martin 5 mi · North Bay 7 mi · West Bay 9 mi · East Bay 11 mi · Deer Point Lake 12 mi · Choctawhatchee Bay 44 mi · Merritts Mill Pond 53 mi · Lower Choctawhatchee Bay 54 mi · Carrabelle River 64 mi · Lake Seminole 66 mi, GA/FL · Lake Jackson 69 mi, FL/AL · Lake Talquin 71 mi
See how Main St. Andrew Bay stacks up: best spotted seatrout lakes in Florida · best gulf flounder lakes in Florida · best gray snapper (mangrove snapper) lakes in Florida · best gag grouper lakes in Florida
Browse all Florida fishing maps or see every water on DepthScout. Bathymetry credit: NOAA BlueTopo (NAVD88; 72% measured, 28% source-interpolated). 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.