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Fishing Cossayuna Lake: what the data says
660-acre lake near Argyle. The lake tops out around 25 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. Here is how the season plays out for each species, straight from the data behind the map.
Largemouth Bass fishing at Cossayuna Lake
Start shallow in spring: largemouth bass sit in 2 to 10 ft that time of year. They move out to 8 to 20 ft in summer and finish the year down in 8 to 25 ft. The spot to know is Shallow bay flat, a weed flat in about 5 ft of water that rates prime for largemouth bass in 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 | Go-to baits |
|---|---|---|---|
| Spring | 2 to 10 ft | dawn & dusk | Spinnerbait, Chatterbait |
| Summer | 8 to 20 ft | dawn & dusk | Texas-rigged 10" worm, Deep-diving crankbait |
| Fall | 4 to 15 ft | midday & dawn | Squarebill crankbait (shad), Spinnerbait |
| Winter | 8 to 25 ft | midday | Blade bait, Jigging spoon |
Smallmouth Bass fishing at Cossayuna Lake
Start shallow in spring: smallmouth bass sit in 3 to 12 ft that time of year. By summer they slide out to 8 to 25 ft, and by winter most fish are in 8 to 25 ft. The spot to know is Main-lake point, a point in about 12 ft of water that rates prime for smallmouth bass in fall. Plan around early morning and the evening in the warm months. Tie on a drop shot (goby/minnow) or a ned rig and you're in the game.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 3 to 12 ft | dawn & dusk | Ned rig, Tube jig |
| Summer | 8 to 25 ft | dawn & dusk | Drop shot (goby/minnow), Ned rig |
| Fall | 8 to 25 ft | midday & dawn | Jerkbait, Blade bait |
| Winter | 8 to 25 ft | midday | Blade bait, Hair jig |
Walleye fishing at Cossayuna Lake
Spring walleye on Cossayuna Lake hold shallow, usually 4 to 15 ft. By summer they slide out to 8 to 25 ft, and by winter most fish are in 8 to 25 ft. The spot to know is Break off the point, a drop-off in about 19 ft of water that rates prime for walleye in fall. In summer the feeding windows fall in the evening and early morning. Summer baits: a crawler harness on bottom bouncer or a deep crankbait (trolled) gets it done.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 4 to 15 ft | dusk & dawn | 1/8 oz jig + minnow, Hair jig |
| Summer | 8 to 25 ft | dusk & dawn | Crawler harness on bottom bouncer, Deep crankbait (trolled) |
| Fall | 8 to 25 ft | dusk & night | Jigging rap, Jig + big minnow |
| Winter | 8 to 25 ft | dusk & dawn | Jigging spoon + minnow head, Rattle bait |
Northern Pike fishing at Cossayuna Lake
Start shallow in spring: northern pike sit in 2 to 8 ft that time of year. By summer they slide out to 8 to 20 ft, and by winter most fish are in 5 to 15 ft. If you only fish one area, make it Shallow bay flat: a weed flat around 5 ft that scores prime in spring. In summer the feeding windows fall in early morning and the evening. A bucktail or a weedless spoon over cabbage covers the summer program.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | #5 inline spinner, Spoon (red/white) |
| Summer | 8 to 20 ft | dawn & dusk | Bucktail, Weedless spoon over cabbage |
| Fall | 6 to 18 ft | midday & dawn | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 5 to 15 ft | midday | Tip-ups, Large jigging spoon |
Yellow Perch fishing at Cossayuna Lake
Start shallow in spring: yellow perch sit in 3 to 12 ft that time of year. By summer they slide out to 8 to 25 ft, and by winter most fish are in 8 to 25 ft. If you only fish one area, make it Shallow bay flat: a weed flat around 5 ft that scores prime in spring. In summer the feeding windows fall in early morning. A drop-shot micro plastics or a small spoon tipped with worm covers the summer program.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 8 to 25 ft | dawn | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 8 to 25 ft | midday | Jigging spoon (small), Perch rig / spreader |
| Winter | 8 to 25 ft | midday & dawn | Tungsten jig + spikes, Rattle spoon (small) |
Crappie fishing at Cossayuna Lake
Start shallow in spring: crappie sit in 2 to 8 ft that time of year. Summer pushes them deeper, 10 to 25 ft, and winter fish settle into 8 to 25 ft. If you only fish one area, make it Old creek channel: a creek channel around 14 ft that scores prime in fall. Best bite is early morning and the evening. A jig trolled/spider-rigged or a small crankbait (trolled) covers the summer program.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | 1/16 oz jig + tube, Curly-tail grub |
| Summer | 10 to 25 ft | dawn & dusk | Jig trolled/spider-rigged, Small crankbait (trolled) |
| Fall | 8 to 20 ft | dawn | Jig + minnow combo, Small swimbait (1.5-2") |
| Winter | 8 to 25 ft | midday | Tungsten jig + soft plastic, Tiny jigging spoon |
Cossayuna Lake also holds rock bass (5 to 20 ft in summer), pumpkinseed (2 to 10 ft in summer), brown bullhead (3 to 12 ft in summer). Pick any of them on the map above for rated spots and bait picks.
Notable structure
- Deep basin: deep basin, around 25 ft
- Break off the point: drop-off, around 19 ft
- Shallow feeding flat: feeding flat, around 16 ft
- Old creek channel: creek channel, around 14 ft
- Main-lake point: point, around 12 ft
- Back-bay flat: weed flat, around 12 ft
- Shallow bay flat: weed flat, around 5 ft
- Marina / dock area: dock line, around 5 ft
- Creek inflow: inflow / creek mouth, around 3 ft
- Secondary point: point, around 2 ft
- Whittaker Brook inflow: inflow / creek mouth, around 2 ft
Common questions
How deep is Cossayuna Lake?
Cossayuna Lake is about 25 ft at its deepest point. The depth chart here comes from real state fisheries GPS surveys, so the contours reflect measured depths.
What fish are in Cossayuna Lake?
Anglers target largemouth bass, smallmouth bass, walleye, northern pike, crappie, yellow perch, rock bass, pumpkinseed, brown bullhead on Cossayuna Lake.
Where is the best fishing spot on Cossayuna Lake?
Shallow bay flat is the top-rated area: a weed flat in about 5 ft of water that rates prime for largemouth bass in spring. Open the map above to see every rated spot for each species and season.
When is the best time to fish Cossayuna Lake?
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.
Nearby waters
Saratoga Lake · Lake George · Lake Champlain - South Lake · Brant Lake · Great Sacandaga Lake · Schroon Lake
See how Cossayuna Lake stacks up: best largemouth bass lakes in New York · best smallmouth bass lakes in New York · best walleye lakes in New York · best northern pike lakes in New York
Browse all New York fishing maps or every water on DepthScout. Bathymetry credit: state fisheries survey programs. How we build these maps. For fishing guidance only, never navigation.