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793-acre Mystic Harbor fishing map with NOAA BlueTopo survey contours (99.06% measured, 99.14% assessed), charted rock and wreck structure, regional fish-survey occurrence, sourced forage timing and verified public access. The water tops out around 25 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. Every species below gets its seasonal read from the same numbers driving the chart.
The outline encloses 791 acres, worked by 17.2 miles of shoreline, broken up by 7 islands. An index of 4.4 puts the bank firmly in maze territory: point after pocket after cove, every one a casting target. The shallow band under 15 ft claims about 97% of the surface — that's where the groceries are. Call it 2.8 mi long by 1.4 mi wide at the broadest reach. If the bite dies, Mystic River - Reach 1 of 2 is 2 mi to the north.
Spring puts striped bass in skinny water — 5 to 20 ft is the zone. As the season builds they drop to 8 to 25 ft, wintering in 8 to 25 ft. Summer striped bass concentrate at Surveyed channel edge, a prime-rated drop-off around 11 ft. Warm-month bites cluster around early morning and the evening. A flutter spoon (deep) or an umbrella rig (trolled) covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 20 ft | dawn & dusk | Surveyed channel edge (11 ft) | Bucktail jig + trailer, Walking topwater (dawn) |
| Summer | 8 to 25 ft | dawn & dusk | Surveyed channel edge (11 ft) | Flutter spoon (deep), Umbrella rig (trolled) |
| Fall | 7 to 25 ft | dawn & dusk | Surveyed channel edge (11 ft) | Topwater walker, Jerkbait |
| Winter | 8 to 25 ft | midday | Surveyed channel edge (11 ft) | Alabama rig (slow), Flutter spoon |
When the water first warms, bluefish slide up into 3 to 20 ft. By summer they slide out to 4 to 25 ft, and by winter most fish are in 8 to 25 ft. If you only fish one area, make it Surveyed channel edge: a drop-off around 11 ft that scores prime in summer. In summer the feeding windows fall in early morning and the evening. Keep a popper (early/late) or a metal jigs in the rips rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 20 ft | dawn & dusk | Surveyed channel edge (11 ft) | Metal (Hopkins/Kastmaster), Pencil popper |
| Summer | 4 to 25 ft | dawn & dusk | Surveyed channel edge (11 ft) | Popper (early/late), Metal jigs in the rips |
| Fall | 3 to 25 ft | dawn & midday | Surveyed channel edge (11 ft) | Pencil popper, Big metal |
| Winter | 8 to 25 ft | midday | Surveyed channel edge (11 ft) | Metal jig worked slow (southern waters) |
Start shallow in spring: summer flounder (fluke) sit in 5 to 25 ft that time of year. They don't go far with the seasons — 6 to 25 ft covers summer, 8 to 25 ft covers winter. The spot to know is Surveyed channel edge, a drop-off in about 11 ft of water that rates prime for summer flounder (fluke) in summer. Warm-month bites cluster around midday and early morning. Throw a bucktail (1-3 oz by drift speed) or a gulp grub on jighead until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 25 ft | midday & dawn | Surveyed channel edge (11 ft) | Bucktail + Gulp swimming mullet, Hi-lo rig + squid strip |
| Summer | 6 to 25 ft | midday & dawn | Surveyed channel edge (11 ft) | Bucktail (1-3 oz by drift speed), Gulp grub on jighead |
| Fall | 7 to 25 ft | midday | Surveyed channel edge (11 ft) | Heavier bucktail on the lumps, Big Gulp 6" grub |
| Winter | 8 to 25 ft | midday | Surveyed channel edge (11 ft) | Slow bottom rig + strip |
Spring puts black sea bass in skinny water — 6 to 25 ft is the zone. Summer fish stay in 6 to 25 ft, and winter fish hold in 8 to 25 ft. Spring black sea bass concentrate at NOAA charted underwater rock, a prime-rated rock pile around 8 ft. Warm-month bites cluster around midday and early morning. A bucktail + grub or a diamond jig + squid teaser covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 6 to 25 ft | midday & dawn | NOAA charted underwater rock (8 ft) | Hi-lo rig + squid, 1-2 oz bucktail + Gulp |
| Summer | 6 to 25 ft | midday & dawn | NOAA charted underwater rock (8 ft) | Bucktail + grub, Diamond jig + squid teaser |
| Fall | 6 to 25 ft | midday | NOAA charted underwater rock (8 ft) | 3-4 oz vertical jig (deep), Double-teaser rig |
| Winter | 8 to 25 ft | midday | NOAA charted underwater rock (8 ft) | Heavy hi-lo rig on deep wrecks |
Spring tautog (blackfish) on Mystic Harbor hold shallow, usually 5 to 25 ft. Depth-wise the year is flat: 7 to 25 ft in summer, 8 to 25 ft once it turns cold. Put Dangerous NOAA charted wreck first on the milk run — a wreck near 11 ft that grades prime for spring. The feeding windows run early morning. The summer box starts with a 1/2-1 oz tog jig + crab.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 25 ft | midday & dawn | Dangerous NOAA charted wreck (11 ft) | Tog jig + green crab half, Bare jig + clam (early) |
| Summer | 7 to 25 ft | dawn | Dangerous NOAA charted wreck (11 ft) | 1/2-1 oz tog jig + crab |
| Fall | 5 to 25 ft | midday | Dangerous NOAA charted wreck (11 ft) | Tog jig + whole green crab, Old-school rig + double crab (deep) |
| Winter | 8 to 25 ft | midday | Dangerous NOAA charted wreck (11 ft) | Heavy jig + crab on deep structure |
The chart marks 46 structure features on Mystic Harbor; the deepest is NOAA charted underwater rock at about 14 ft.
Access data: Connecticut DEEP — State Boat Launches. Confirm conditions and fees locally before you launch.
Season dates, license requirements, and size and bag limits for Connecticut waters are set by the Connecticut DEEP (marine fishing) — and special regulations can apply to Mystic Harbor specifically, so confirm the current rules before you fish.
Check the official Connecticut fishing regulations →
Mystic Harbor is about 25 ft (8 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 striped bass, bluefish, summer flounder (fluke), black sea bass, tautog (blackfish) on Mystic Harbor.
Surveyed channel edge is the top-rated area: a drop-off in about 11 ft of water that rates prime for summer flounder (fluke) in summer. Scroll up to the map for the complete spot list by species and season.
For striped 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 Mystic Harbor is regulated by the Connecticut DEEP (marine fishing). Check the official Connecticut regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Mystic River - Reach 1 of 2 2 mi, CT/RI/MA · Stonington Harbor 3 mi · Fishers Island Sound 3 mi · New London Harbor 6 mi · Pawcatuck River 7 mi, RI/CT · Thames River 7 mi · Long Pond 7 mi · Lantern Hill Pond 8 mi · Twotree Island Channel 9 mi · Chapman Pond 10 mi, RI · Lake Of Isles 10 mi · Avery Pond 11 mi
See how Mystic Harbor stacks up: best striped bass lakes in Connecticut · best summer flounder (fluke) lakes in Connecticut · best bluefish lakes in Connecticut · best black sea bass lakes in Connecticut
Browse all Connecticut fishing maps or see every water on DepthScout. Bathymetry credit: NOAA BlueTopo (NAVD88; 99% 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.