Salt water depth chart
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1,386-acre Coupon Bight fishing map with fully measured NOAA BlueTopo shallow-water contours, measured rock, pier, hard-bottom, bridge, seagrass and depth-transition spots, seven sourced Florida Keys fish profiles, three forage calendars, connected public ramp access and current rules. The water tops out around 13 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. Here's the year, species by species, as the scoring engine sees it.
Coupon Bight maps at 1,390 acres behind 9.2 miles of shoreline, broken up by 3 islands. A middling shoreline index (1.8) gives it some bays to work without being a maze. There is no deep basin to speak of — the entire surface is under ~15 ft, prime weed water end to end. Tip to tip the water measures near 2.3 mi with a 1.6-mi widest point. Newfound Harbor Channel sits 2 mi west — the closest neighbouring chart.
Spring puts gray snapper (mangrove snapper) in skinny water — 2 to 13 ft is the zone. Summer fish stay in 2 to 13 ft, and winter fish hold in 2 to 13 ft. NOAA charted pier is the standout, a dock line at roughly 4 ft, rated prime for summer gray snapper (mangrove snapper). Plan around early morning and the evening in the warm months. A small bucktail or a paddletail covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 13 ft | dawn & dusk | NOAA charted pier (4 ft) | Small paddletail, Jighead + shrimp imitation |
| Summer | 2 to 13 ft | dawn & dusk | NOAA charted pier (4 ft) | Small bucktail, Paddletail |
| Fall | 2 to 13 ft | dawn & dusk | NOAA charted pier (4 ft) | Small vertical jig, Jighead + paddletail |
| Winter | 2 to 13 ft | midday | NOAA charted pier (4 ft) | Small jig worked slowly |
In spring, mutton snapper run shallow here, mostly 2 to 13 ft. Summer keeps them at 2 to 13 ft, and they winter in 2 to 13 ft. Spring mutton snapper concentrate at NOAA charted rock bottom, a prime-rated hard bottom around 4 ft. Fish it in early morning and the evening and you'll meet the bite. You won't need more than a heavy bucktail or a vertical jig most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 13 ft | dawn & dusk | NOAA charted rock bottom (4 ft) | Bucktail near bottom, Paddletail |
| Summer | 2 to 13 ft | dawn & dusk | NOAA charted rock bottom (4 ft) | Heavy bucktail, Vertical jig |
| Fall | 2 to 13 ft | dawn & dusk | NOAA charted rock bottom (4 ft) | Bucktail + strip, Slow vertical jig |
| Winter | 2 to 13 ft | dusk | NOAA charted rock bottom (4 ft) | Slow jig, Bottom bucktail |
Early season yellowtail snapper use the shallows, holding in 2 to 13 ft. Even in summer they hold at 2 to 13 ft; winter keeps them in 2 to 13 ft. Put NOAA charted rock bottom first on the milk run — a hard bottom near 4 ft that grades prime for spring. In summer the feeding windows fall in early morning and the evening. Tie on a micro jig or a small paddletail and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 13 ft | dawn & dusk | NOAA charted rock bottom (4 ft) | Small bucktail, Light vertical jig |
| Summer | 2 to 13 ft | dawn & dusk | NOAA charted rock bottom (4 ft) | Micro jig, Small paddletail |
| Fall | 2 to 13 ft | dawn & dusk | NOAA charted rock bottom (4 ft) | Small vertical jig, Baitfish streamer |
| Winter | 2 to 13 ft | dusk | NOAA charted rock bottom (4 ft) | Small jig worked deep, Bucktail |
Spring bonefish on Coupon Bight hold shallow, usually 1 to 10 ft. By summer they slide out to 1 to 12 ft, and by winter most fish are in 2 to 13 ft. The chart's best answer is 2004 - 2015 continuous seagrass edge — seagrass edge, 4 ft, prime for spring. Prime time lands in early morning and midday. The summer box starts with a light shrimp jig or a sparse shrimp fly.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 10 ft | dawn & midday | 2004 - 2015 continuous seagrass edge (4 ft) | Small shrimp jig, Shrimp fly |
| Summer | 1 to 12 ft | dawn & midday | 2004 - 2015 continuous seagrass edge (4 ft) | Light shrimp jig, Sparse shrimp fly |
| Fall | 1 to 12 ft | dawn & midday | 2004 - 2015 continuous seagrass edge (4 ft) | Shrimp-pattern jig, Shrimp fly |
| Winter | 2 to 13 ft | midday | 2004 - 2015 continuous seagrass edge (4 ft) | Slow shrimp jig, Small weighted shrimp fly |
Spring puts atlantic tarpon in skinny water — 2 to 13 ft is the zone. Summer fish stay in 1 to 13 ft, and winter fish hold in 2 to 13 ft. Spring atlantic tarpon concentrate at NOAA charted rock bottom, a good-rated hard bottom around 4 ft. Warm-month bites cluster around early morning and the evening. A heavy paddletail or a swimbait in pass current covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 13 ft | dawn & dusk | NOAA charted rock bottom (4 ft) | 4-6 inch paddletail, Suspending baitfish plug |
| Summer | 1 to 13 ft | dawn & dusk | NOAA charted rock bottom (4 ft) | Heavy paddletail, Swimbait in pass current |
| Fall | 1 to 13 ft | dawn & dusk | NOAA charted rock bottom (4 ft) | Mullet-profile swimbait, Surface plug |
| Winter | 2 to 13 ft | dusk | NOAA charted rock bottom (4 ft) | Slow-rolled paddletail, Suspending plug |
In spring, permit run shallow here, mostly 2 to 13 ft. Summer keeps them at 1 to 13 ft, and they winter in 3 to 13 ft. Winter permit concentrate at NOAA charted rock bottom, a prime-rated hard bottom around 4 ft. Fish it in early morning and midday and you'll meet the bite. You won't need more than a crab fly or a crab imitation most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 13 ft | dawn | 2004 - 2015 continuous seagrass edge (4 ft) | Small crab fly, Shrimp-pattern jig |
| Summer | 1 to 13 ft | dawn & midday | 2004 - 2015 continuous seagrass edge (4 ft) | Crab fly, Crab imitation |
| Fall | 1 to 13 ft | dawn | NOAA charted rock bottom (4 ft) | Crab imitation, Shrimp-pattern jig |
| Winter | 3 to 13 ft | midday | NOAA charted rock bottom (4 ft) | Crab imitation worked deep |
Coupon Bight also holds snook (3 to 13 ft in summer). Pick any of them on the map above for rated spots and bait picks.
28 pieces of structure are mapped here — 2004 - 2015 continuous seagrass edge, around 8 ft, is the deepest of them.
Access data: Florida FWC Boat Ramp Inventory (OBJECTID 1400; RampID MO00274NS), Monroe County and Florida DEP. 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 Coupon Bight specifically, so confirm the current rules before you fish.
Check the official Florida fishing regulations →
Coupon Bight is about 13 ft (4 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 gray snapper (mangrove snapper), mutton snapper, yellowtail snapper, bonefish, atlantic tarpon, permit, snook on Coupon Bight.
NOAA charted pier is the top-rated area: a dock line in about 4 ft of water that rates prime for gray snapper (mangrove snapper) in summer. Every other rated spot, per species and season, is on the map above.
For gray snapper (mangrove snapper), 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 Coupon Bight 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.
Newfound Harbor Channel 2 mi · Newfound Harbor 3 mi · Cudjoe Bay 9 mi · Upper Sugarloaf Sound 12 mi · Lower Sugarloaf Sound 14 mi · Similar Sound 18 mi · Blacklion Bay 20 mi · Garrison Bight 28 mi · Man of War Harbor 29 mi · Lakes Passage 36 mi · East Central Florida Bay 60 mi · Card Sound 81 mi
See how Coupon Bight stacks up: best snook lakes in Florida · best gray snapper (mangrove snapper) lakes in Florida · best permit lakes in Florida · best atlantic tarpon lakes in Florida
Browse all Florida fishing maps or see every water on DepthScout. Bathymetry credit: NOAA BlueTopo (NAVD88; 100% measured, 0% 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.