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Rating depth structure for smallmouth bass.
Shared by DepthScout anglers. Exact spots stay private, always.
324-acre lake near Fowler. The lake tops out around 140 ft. The depth chart comes from published agency bathymetric survey data, so the contours are survey-derived rather than computer-modeled. Every species below gets its seasonal read from the same numbers driving the chart.
Sylvia Lake maps at 317 acres behind 4.1 miles of shoreline. A middling shoreline index (1.7) gives it some bays to work without being a maze. 30% of the surface is littoral (under ~15 ft) — cover, weeds and forage water. Call it 1.1 mi long by 0.8 mi wide at the broadest reach. St. Lawrence County claims this one. Its nearest charted neighbour, Chub Lake, is 7 mi to the northeast.
Early season lake trout use the shallows, holding in 10 to 40 ft. Summer is a 50 to 120 ft game here, winter a 20 to 80 ft one. The chart's best answer is Main-lake point — point, 30 ft, prime for spring. Best bite is early morning. Tie on a white tube jig (deep) or a magnum spoon on downrigger and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 10 to 40 ft | dawn & dusk | Main-lake point (30 ft) | Casting spoon over shoals, Jerkbait (shallow) |
| Summer | 50 to 120 ft | dawn | Break off the point (120 ft) | White tube jig (deep), Magnum spoon on downrigger |
| Fall | 10 to 50 ft | dusk & dawn | Main-lake point (30 ft) | Heavy casting spoon, Jigging rap over reefs |
| Winter | 20 to 80 ft | dawn | Deep basin (140 ft) | White tube jig, Airplane jig |
Come spring, look for rainbow trout tight to the bank in 5 to 20 ft. They move out to 8 to 30 ft in summer and finish the year down in 8 to 40 ft. If you only fish one area, make it Secondary point: a point around 5 ft that scores prime in spring. Best bite is early morning and the evening. A dodger + spoon (deep troll) or a flutter spoon is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 20 ft | dawn & dusk | Secondary point (5 ft) | Inline spinner (silver), Small spoon |
| Summer | 8 to 30 ft | dawn & dusk | Main-lake point (30 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 10 to 35 ft | dawn & dusk | Main-lake point (30 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 8 to 40 ft | dawn | Break off the point (120 ft) | Jigging spoon, Tube jig (white) |
Spring smallmouth bass on Sylvia Lake hold shallow, usually 3 to 12 ft. By summer they slide out to 10 to 30 ft, and by winter most fish are in 20 to 45 ft. The chart's best answer is Secondary point — point, 5 ft, prime for fall. Prime time lands in early morning and the evening. The summer box starts with a drop shot (goby/minnow) or a ned rig.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | dawn & dusk | Secondary point (5 ft) | Ned rig, Tube jig |
| Summer | 10 to 30 ft | dawn & dusk | Main-lake point (30 ft) | Drop shot (goby/minnow), Ned rig |
| Fall | 8 to 25 ft | midday & dawn | Secondary point (5 ft) | Jerkbait, Blade bait |
| Winter | 20 to 45 ft | midday | Break off the point (120 ft) | Blade bait, Hair jig |
Sylvia Lake carries 6 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 140 ft down.
Access data: New York State DEC — Boat Launches (FishNY). Confirm conditions and fees locally before you launch.
| Date | Species | Count | Size |
|---|---|---|---|
| May 2026* | Rainbow Trout | 3,120 | ~8" |
| October 2025* | Rainbow Trout | 4,000 | ~6.7" |
| June 2025* | Rainbow Trout | 900 | ~9.6" |
| May 2025* | Rainbow Trout | 3,150 | ~9.6" |
| May 2024* | Rainbow Trout | 3,150 | ~9.6" |
* Approximate date (agency reports month or season only). Source: NYSDEC fish-stocking lists, retrieved 2026-08-18.
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 Sylvia Lake specifically, so confirm the current rules before you fish.
Check the official New York fishing regulations →
Sylvia Lake is about 140 ft (43 m) deep at its deepest point. The depth chart comes from published agency bathymetric survey data, so the contours are survey-derived rather than computer-modeled.
Anglers target lake trout, rainbow trout, smallmouth bass on Sylvia Lake.
Main-lake point is the top-rated area: a point in about 30 ft of water that rates prime for lake trout in spring. Every other rated spot, per species and season, is on the map above.
For lake trout, the summer bite is best in early morning. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.
Yes — per NYSDEC fish-stocking lists records, Sylvia Lake was most recently stocked May 2026 with 3,120 rainbow trout. The full stocking history is listed above.
Fishing on Sylvia 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.
Chub Lake 7 mi · Lake Bonaparte 7 mi · Indian River Lake 8 mi · Bullhead Pond 9 mi · Trout Lake 11 mi · Payne Lake 12 mi · Pleasant Lake 13 mi · Round Lake 15 mi · Sucker Lake 15 mi · Red Lake 16 mi · Lake of the Woods 16 mi · Moon Lake 16 mi
See how Sylvia Lake stacks up: best smallmouth bass lakes in New York · best rainbow trout lakes in New York · best lake trout lakes in New York
More water nearby: St. Lawrence County fishing maps (5 charts). Browse all New York fishing maps or see every water on DepthScout. Bathymetry: published agency survey data. 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.