Salt water depth chart
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36-acre Five Islands Harbor fishing map with NOAA H06839 and BlueTopo survey contours (96.55% measured, 100% assessed), seven measured charted-rock, pier, ledge and eelgrass spots, five Gulf of Maine fish profiles, two forage calendars, exact town-wharf access and current Maine rules. The water tops out around 37 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. The season-by-season read for each species follows, from the map's own numbers.
Drawn out, this is 35 acres of water rimmed by 1.6 miles of bank, broken up by 2 islands. The shoreline is moderately structured (index 2) — enough points and pockets to pattern. About 32% of the surface sits shallower than 15 ft — that's the weed-and-bait zone. Call it 0.4 mi long by 0.3 mi wide at the broadest reach. The nearest mapped water is Harmon Harbor, 1 mi to the southwest.
When the water first warms, striped bass slide up into 5 to 20 ft. By summer they slide out to 11 to 37 ft, and by winter most fish are in 11 to 37 ft. If you only fish one area, make it Surveyed channel edge: a drop-off around 13 ft that scores good in summer. In summer the feeding windows fall in early morning and the evening. Keep a topwater walker at low light or a paddletail on a light jig rigged through the warm months.
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 | 5 to 20 ft | dawn & dusk | Surveyed channel edge (13 ft) | 3-6 inch paddletail, Suspending minnow plug |
| Summer | 11 to 37 ft chart-limited; documented 25 to 60 ft | dawn & dusk | Surveyed channel edge (13 ft) | Topwater walker at low light, Paddletail on a light jig |
| Fall | 10 to 35 ft | dawn & dusk | Surveyed channel edge (13 ft) | Pencil popper, Baitfish swimbait |
| Winter | 11 to 37 ft chart-limited; documented 20 to 50 ft | midday | Surveyed channel edge (13 ft) | Slow paddletail, Bucktail near bottom |
Start shallow in spring: bluefish sit in 3 to 20 ft that time of year. Warm water sends them out to 5 to 30 ft; cold water stacks them in 11 to 37 ft. Top water on the chart: Surveyed channel edge, a drop-off in the 13 ft range, good in summer. Fish it in early morning and the evening and you'll meet the bite. Throw a popper (early/late) or a metal jigs in the rips 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 | 3 to 20 ft | dawn & dusk | Surveyed channel edge (13 ft) | Metal (Hopkins/Kastmaster), Pencil popper |
| Summer | 5 to 30 ft | dawn & dusk | Surveyed channel edge (13 ft) | Popper (early/late), Metal jigs in the rips |
| Fall | 3 to 25 ft | dawn & midday | Surveyed channel edge (13 ft) | Pencil popper, Big metal |
| Winter | 11 to 37 ft chart-limited; documented 15 to 40 ft | midday | open water | Metal jig worked slow (southern waters) |
When the water first warms, atlantic mackerel slide up into 4 to 37 ft. There's no big seasonal slide here — summer means 7 to 37 ft, winter 9 to 37 ft. Start at Surveyed channel edge. It's a drop-off holding about 13 ft of water and rates good come summer. The feeding windows run early morning and the evening. Keep a feather rig or a small vertical jig rigged through the warm months.
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 | 4 to 37 ft chart-limited; documented 5 to 45 ft | dawn & dusk | Surveyed channel edge (13 ft) | Mackerel feather rig, Small silver jig |
| Summer | 7 to 37 ft chart-limited; documented 15 to 80 ft | dawn & dusk | Surveyed channel edge (13 ft) | Feather rig, Small vertical jig |
| Fall | 6 to 37 ft chart-limited; documented 10 to 65 ft | dawn & dusk | Surveyed channel edge (13 ft) | Compact silver jig, Sparse feather rig |
| Winter | 9 to 37 ft chart-limited; documented 30 to 120 ft | midday | Surveyed channel edge (13 ft) | Small deep jig |
Spring atlantic cod on Five Islands Harbor hold shallow, usually 7 to 37 ft. Depth-wise the year is flat: 9 to 37 ft in summer, 8 to 37 ft once it turns cold. Put Maine Geological Survey mapped ledge first on the milk run — a hard bottom near 32 ft that grades prime for summer. The feeding windows run early morning. The summer box starts with a heavy metal jig or a large soft-plastic jig.
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 | 7 to 37 ft chart-limited; documented 20 to 100 ft | dawn | Maine Geological Survey mapped ledge (32 ft) | Diamond jig, Heavy bucktail |
| Summer | 9 to 37 ft chart-limited; documented 45 to 180 ft | dawn | Maine Geological Survey mapped ledge (32 ft) | Heavy metal jig, Large soft-plastic jig |
| Fall | 7 to 37 ft chart-limited; documented 25 to 140 ft | dawn | Maine Geological Survey mapped ledge (32 ft) | Diamond jig, Bucktail with teaser |
| Winter | 8 to 37 ft chart-limited; documented 50 to 220 ft | midday | Maine Geological Survey mapped ledge (32 ft) | Heavy vertical jig |
The spring pattern is a shallow one: atlantic herring in 5 to 25 ft. Midsummer fish sit out in 11 to 37 ft before dropping to 11 to 37 ft for winter. The spot to know is NOAA charted pier, a dock line in about 4 ft of water that rates prime for atlantic herring in spring. Plan around early morning and the evening in the warm months. Summer baits: a herring feather rig or a small silver jig 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 | 5 to 25 ft | dawn & dusk | NOAA charted pier (4 ft) | Small herring feather rig, Micro jig rig |
| Summer | 11 to 37 ft chart-limited; documented 15 to 50 ft | dawn & dusk | Surveyed channel edge (13 ft) | Herring feather rig, Small silver jig |
| Fall | 9 to 37 ft chart-limited; documented 10 to 40 ft | dawn & dusk | Surveyed channel edge (13 ft) | Small feather rig, Compact silver spoon |
| Winter | 11 to 37 ft chart-limited; documented 20 to 60 ft | midday | Surveyed channel edge (13 ft) | Small silver jig, Sparse feather rig |
Spring winter flounder on Five Islands Harbor hold shallow, usually 2 to 18 ft. By summer they slide out to 8 to 30 ft, and by winter most fish are in 3 to 20 ft. The chart's best answer is NOAA charted pier — dock line, 4 ft, good for spring. Prime time lands in early morning. The summer box starts with a light scented jig worked slowly.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 18 ft | midday & dawn | NOAA charted pier (4 ft) | Small bucktail tipped with worm, Scented grub on a light jig |
| Summer | 8 to 30 ft | dawn | Surveyed channel edge (13 ft) | Light scented jig worked slowly |
| Fall | 6 to 25 ft | midday | Surveyed channel edge (13 ft) | Small bucktail + worm, Scented bottom jig |
| Winter | 3 to 20 ft | midday | Surveyed channel edge (13 ft) | Small bucktail tipped with worm |
The chart marks 9 structure features on Five Islands Harbor; the deepest is Maine Geological Survey mapped ledge at about 32 ft.
Access data: Town of Georgetown — Five Islands Wharf and Town-Owned Property Management. Confirm conditions and fees locally before you launch.
Season dates, license requirements, and size and bag limits for Maine waters are set by the Maine DMR (saltwater recreational fishing) — and special regulations can apply to Five Islands Harbor specifically, so confirm the current rules before you fish.
Check the official Maine fishing regulations →
Five Islands Harbor is about 37 ft (11 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, atlantic mackerel, atlantic cod, atlantic herring, winter flounder on Five Islands Harbor. The list combines the water's survey records with habitat-filtered species from broader official evidence; those additions are plausible occurrences, not exact-water abundance or guaranteed catches.
Maine Geological Survey mapped ledge is the top-rated area: a hard bottom in about 32 ft of water that rates prime for atlantic cod in summer. The interactive chart above rates every spot for each 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 Five Islands Harbor is regulated by the Maine DMR (saltwater recreational fishing). Check the official Maine regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Harmon Harbor 1 mi · Robinhood Cove 2 mi · Ebenecook Harbor 2 mi · Knubble Bay 3 mi · Cape Harbor 4 mi · Boothbay Harbor 4 mi · Hall Bay 4 mi · Sagadahoc River 4 mi · Todd Bay 5 mi · Sagadahoc Bay 5 mi · Booth Bay 5 mi · Lewis Cove 5 mi
See how Five Islands Harbor stacks up: best striped bass lakes in Maine · best winter flounder lakes in Maine · best bluefish lakes in Maine · best atlantic herring lakes in Maine
Browse all Maine fishing maps. See every water on DepthScout. Bathymetry credit: NOAA BlueTopo (NAVD88; 97% measured, 3% 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.