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111-acre lake near Smithtown. The lake tops out around 6 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. The season-by-season read for each species follows, from the map's own numbers.
The drawn water covers 99 acres wrapped in 4.1 miles of bank. That shoreline is heavily fingered (development index 2.9) — bays, points and pockets everywhere, which multiplies the fishable edge. Every acre of it sits shallower than ~15 ft: one big littoral zone, cover and forage throughout. End to end it runs roughly 1 mi, about 0.8 mi across. If the bite dies, Lake Ronkonkoma is 5 mi to the east.
Early season largemouth bass use the shallows, holding in 1 to 6 ft. Even in summer they hold at 2 to 6 ft; winter keeps them in 2 to 6 ft. The chart's best answer is Shallow bay flat — weed flat, 3 ft, prime for spring. Best bite is early morning and the evening. Tie on a texas-rigged 10" worm or a deep-diving crankbait and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 6 ft | dawn & dusk | Shallow bay flat (3 ft) | Spinnerbait, Chatterbait |
| Summer | 2 to 6 ft | dawn & dusk | Shallow bay flat (3 ft) | Texas-rigged 10" worm, Deep-diving crankbait |
| Fall | 2 to 6 ft | midday & dawn | Main-lake point (3 ft) | Squarebill crankbait (shad), Spinnerbait |
| Winter | 2 to 6 ft | midday | Deep basin (6 ft) | Blade bait, Jigging spoon |
Spring puts yellow perch in skinny water — 2 to 6 ft is the zone. Summer fish stay in 2 to 6 ft, and winter fish hold in 2 to 6 ft. Shallow bay flat is the standout, a weed flat at roughly 3 ft, rated prime for spring yellow perch. Plan around early morning in the warm months. A drop-shot micro plastics or a small spoon tipped with worm covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 6 ft | midday & dawn | Shallow bay flat (3 ft) | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 2 to 6 ft | dawn | Deep basin (6 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 2 to 6 ft | midday | Deep basin (6 ft) | Jigging spoon (small), Perch rig / spreader |
| Winter | 2 to 6 ft | midday & dawn | Deep basin (6 ft) | Tungsten jig + spikes, Rattle spoon (small) |
Spring brown bullhead on Blydenburgh Lake hold shallow, usually 2 to 6 ft. Depth-wise the year is flat: 2 to 6 ft in summer, 2 to 6 ft once it turns cold. The chart's best answer is Deep basin — deep basin, 6 ft, prime for winter. Prime time lands in after dark and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 6 ft | dusk & night | Shallow bay flat (3 ft) | |
| Summer | 2 to 6 ft | night & dusk | Shallow bay flat (3 ft) | |
| Fall | 2 to 6 ft | dusk | Deep basin (6 ft) | |
| Winter | 2 to 6 ft | midday | Deep basin (6 ft) |
Spring puts pumpkinseed in skinny water — 1 to 6 ft is the zone. Summer fish stay in 1 to 6 ft, and winter fish hold in 2 to 6 ft. Spring pumpkinseed concentrate at Shallow bay flat, a prime-rated weed flat around 3 ft. Warm-month bites cluster around the evening and early morning. A micro tube or a sponge spider (fly) covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 6 ft | midday & dusk | Shallow bay flat (3 ft) | Micro jig under a float, Tiny beetle-spin |
| Summer | 1 to 6 ft | dusk & dawn | Shallow bay flat (3 ft) | Micro tube, Sponge spider (fly) |
| Fall | 2 to 6 ft | dusk & dawn | Shallow bay flat (3 ft) | Micro jig + waxworm, Small spoon tipped |
| Winter | 2 to 6 ft | dawn | Shallow bay flat (3 ft) | Tungsten ice jig + plastic, Tiny spoon |
Spring bluegill on Blydenburgh Lake hold shallow, usually 1 to 6 ft. Depth-wise the year is flat: 2 to 6 ft in summer, 2 to 6 ft once it turns cold. The chart's best answer is Shallow bay flat — weed flat, 3 ft, prime for spring. Prime time lands in early morning and the evening. The summer box starts with a small sponge spider (fly) or a micro tube jig.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 6 ft | midday & dusk | Shallow bay flat (3 ft) | 1/32 oz jig + micro plastic, Tiny popper (evenings) |
| Summer | 2 to 6 ft | dawn & dusk | Shallow bay flat (3 ft) | Small sponge spider (fly), Micro tube jig |
| Fall | 2 to 6 ft | midday | Shallow bay flat (3 ft) | Micro jig + waxworm, Small spoon tipped |
| Winter | 2 to 6 ft | midday | Deep basin (6 ft) | Tungsten ice jig + plastic, Tiny spoon |
5 pieces of structure are mapped here — Secondary point, around 6 ft, is the deepest of them.
Season dates, license requirements, and size and bag limits for New York waters are set by the New York DEC — and special regulations can apply to Blydenburgh Lake specifically, so confirm the current rules before you fish.
Check the official New York fishing regulations →
Blydenburgh Lake is about 6 ft (2 m) deep at its deepest point. The depth chart here comes from real state fisheries GPS surveys, so the contours reflect measured depths.
Anglers target largemouth bass, yellow perch, brown bullhead, pumpkinseed, bluegill on Blydenburgh Lake.
Shallow bay flat is the top-rated area: a weed flat in about 3 ft of water that rates prime for largemouth bass in spring. The interactive chart above rates every spot for each species and season.
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.
Fishing on Blydenburgh Lake is regulated by the New York DEC. Check the official New York regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Lake Ronkonkoma 5 mi · Knapps Lake 7 mi · Artist Lake 15 mi · Saugatuck River 21 mi, CT/NY · Deep Pond 22 mi · Frash Pond 24 mi, CT · Hempstead Lake 25 mi · Oakland Lake 29 mi · Wildwood Lake 29 mi · Saugatuck Reservoir 31 mi, CT · Kissena Lake 31 mi · Peconic River 31 mi, NY/CT
See how Blydenburgh Lake stacks up: best largemouth bass lakes in New York · best bluegill lakes in New York · best yellow perch lakes in New York · best pumpkinseed lakes in New York
Browse all New York fishing maps or see every water on DepthScout. Bathymetry credit: state fisheries survey programs. 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.