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Rating depth structure for rainbow trout.
Shared by DepthScout anglers. Exact spots stay private, always.
2,050-acre lake near Webb. The lake tops out around 80 ft. The depth chart comes from published agency bathymetric survey data, so the contours are survey-derived rather than computer-modeled. The rest of this page walks each species through its year, using the map's own scoring.
Fourth Lake maps at 2,077 acres behind 18.5 miles of shoreline — 5 islands included. A development index of 2.9 means a maze of bays and points: far more casting targets than a round bowl of the same size. 29% of the surface is littoral (under ~15 ft) — cover, weeds and forage water. Call it 5.4 mi long by 1.7 mi wide at the broadest reach. It sits in Herkimer County. Moss Lake sits 2 mi north — the closest neighbouring chart.
When the water first warms, lake trout slide up into 10 to 40 ft. By summer they slide out to 24 to 80 ft, and by winter most fish are in 20 to 80 ft. If you only fish one area, make it Deep basin: a deep basin around 80 ft that scores prime in summer. In summer the feeding windows fall in early morning. Keep a white tube jig (deep) or a magnum spoon on downrigger rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 10 to 40 ft | dawn & dusk | Break off the point (17 ft) | Casting spoon over shoals, Jerkbait (shallow) |
| Summer | 24 to 80 ft | dawn | Deep basin (80 ft) | White tube jig (deep), Magnum spoon on downrigger |
| Fall | 10 to 50 ft | dusk & dawn | Secondary point (7 ft) | Heavy casting spoon, Jigging rap over reefs |
| Winter | 20 to 80 ft | dawn | Deep basin (80 ft) | White tube jig, Airplane jig |
Spring landlocked salmon on Fourth Lake hold shallow, usually 1 to 15 ft. By summer they slide out to 25 to 60 ft, and by winter most fish are in 10 to 40 ft. The chart's best answer is Eagle Creek inflow — inflow / creek mouth, 8 ft, prime for spring. Prime time lands in early morning and the evening. The summer box starts with a dodger + streamer down deep or a thin spoon on lead core.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 15 ft | dawn & dusk | Eagle Creek inflow (8 ft) | Streamer flies (Grey Ghost) off boards, Thin spoon (Mooselook style) |
| Summer | 25 to 60 ft | dawn & dusk | Break off the point (17 ft) | Dodger + streamer down deep, Thin spoon on lead core |
| Fall | 5 to 30 ft | dawn & dusk | Eagle Creek inflow (8 ft) | Casting spoon at the mouths, Streamers |
| Winter | 10 to 40 ft | dawn | Break off the point (17 ft) | Small jigging spoon, Swedish pimple + smelt |
Spring rainbow trout on Fourth Lake hold shallow, usually 5 to 20 ft. By summer they slide out to 8 to 30 ft, and by winter most fish are in 8 to 40 ft. The chart's best answer is Eagle Creek inflow — inflow / creek mouth, 8 ft, prime for spring. Prime time lands in early morning and the evening. The summer box starts with a dodger + spoon (deep troll) or a flutter spoon.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 20 ft | dawn & dusk | Eagle Creek inflow (8 ft) | Inline spinner (silver), Small spoon |
| Summer | 8 to 30 ft | dawn & dusk | Eagle Creek inflow (8 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 10 to 35 ft | dawn & dusk | Break off the point (17 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 8 to 40 ft | dawn | Break off the point (17 ft) | Jigging spoon, Tube jig (white) |
The spring pattern is a shallow one: yellow perch in 3 to 12 ft. Midsummer fish sit out in 10 to 30 ft before dropping to 15 to 35 ft for winter. The spot to know is Shallow bay flat, a weed flat in about 4 ft of water that rates prime for yellow perch in spring. Plan around early morning in the warm months. Summer baits: a drop-shot micro plastics or a small spoon tipped with worm gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | Shallow bay flat (4 ft) | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 10 to 30 ft | dawn | Break off the point (17 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 12 to 35 ft | midday | Break off the point (17 ft) | Jigging spoon (small), Perch rig / spreader |
| Winter | 15 to 35 ft | midday & dawn | Break off the point (17 ft) | Tungsten jig + spikes, Rattle spoon (small) |
Fourth Lake carries 12 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 80 ft down.
Access data: New York State DEC — Boat Launches (FishNY). Confirm conditions and fees locally before you launch.
| Date | Species | Count | Size |
|---|---|---|---|
| 2026* | Rainbow Trout | 9,570 | ~8" |
| October 2025* | Rainbow Trout | 5,130 | ~6.6" |
| May 2025* | Rainbow Trout | 9,660 | ~8.8" |
| April 2025* | Landlocked Salmon | 4,440 | ~7" |
| April 2025* | Lake Trout | 6,010 | ~7" |
| November 2024* | Lake Trout | 3,000 | ~5.7" |
| October 2024* | Rainbow Trout | 3,700 | ~8.5" |
| May 2024* | Rainbow Trout | 3,000 | ~9.2" |
* 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 Fourth Lake specifically, so confirm the current rules before you fish.
Check the official New York fishing regulations →
Fourth Lake is about 80 ft (24 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, landlocked salmon, rainbow trout, yellow perch on Fourth Lake.
Deep basin is the top-rated area: a deep basin in about 80 ft of water that rates prime for lake trout in summer. 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, Fourth Lake was most recently stocked 2026 with 9,570 rainbow trout. The full stocking history is listed above.
Fishing on Fourth 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.
Moss Lake 2 mi · Limekiln Lake 4 mi · Twitchell Lake 7 mi · Lower Browns Tract Pond 8 mi · Nicks Lake 9 mi · Raquette Lake 12 mi · Woodhull Lake 13 mi · Salmon Lake 14 mi · South Lake 17 mi · Clear Lake 17 mi · Forked Lake 17 mi · Francis Lake 18 mi
See how Fourth Lake stacks up: best rainbow trout lakes in New York · best yellow perch lakes in New York · best lake trout lakes in New York · best landlocked salmon lakes in New York
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.