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Fishing Lost Island Lake: what the data says
1,260-acre lake near Ruthven. The lake tops out around 12 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. What follows comes from the same scoring engine that paints the spots above.
Walleye fishing at Lost Island Lake
In spring, walleye run shallow here, mostly 3 to 12 ft. Summer fish stay in 4 to 12 ft, and winter fish hold in 4 to 12 ft. The spot to know is Break off the point, a drop-off in about 12 ft of water that rates prime for walleye in fall. In summer the feeding windows fall in the evening and early morning. Tie on a crawler harness on bottom bouncer or a deep crankbait (trolled) and you're in the game.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 3 to 12 ft | dusk & dawn | 1/8 oz jig + minnow, Hair jig |
| Summer | 4 to 12 ft | dusk & dawn | Crawler harness on bottom bouncer, Deep crankbait (trolled) |
| Fall | 4 to 12 ft | dusk & night | Jigging rap, Jig + big minnow |
| Winter | 4 to 12 ft | dusk & dawn | Jigging spoon + minnow head, Rattle bait |
Yellow Perch fishing at Lost Island Lake
In spring, yellow perch run shallow here, mostly 3 to 12 ft. Summer fish stay in 4 to 12 ft, and winter fish hold in 4 to 12 ft. The spot to know is Deep basin, a deep basin in about 12 ft of water that rates prime for yellow perch in fall. 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 | Go-to baits |
|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 4 to 12 ft | dawn | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 4 to 12 ft | midday | Jigging spoon (small), Perch rig / spreader |
| Winter | 4 to 12 ft | midday & dawn | Tungsten jig + spikes, Rattle spoon (small) |
Northern Pike fishing at Lost Island Lake
Spring northern pike on Lost Island Lake hold shallow, usually 2 to 8 ft. Summer pushes them deeper, 4 to 12 ft, and winter fish settle into 4 to 12 ft. Shallow bay flat is the standout, a weed flat at roughly 2 ft, rated prime for spring northern pike. 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 | 4 to 12 ft | dawn & dusk | Bucktail, Weedless spoon over cabbage |
| Fall | 4 to 12 ft | midday & dawn | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 4 to 12 ft | midday | Tip-ups, Large jigging spoon |
Crappie fishing at Lost Island Lake
Spring crappie on Lost Island Lake hold shallow, usually 2 to 8 ft. They move out to 4 to 12 ft in summer and finish the year down in 4 to 12 ft. If you only fish one area, make it Deep basin: a deep basin around 12 ft that scores prime in winter. Best bite is early morning and the evening. Summer baits: a jig trolled/spider-rigged or a small crankbait (trolled) gets it done.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | 1/16 oz jig + tube, Curly-tail grub |
| Summer | 4 to 12 ft | dawn & dusk | Jig trolled/spider-rigged, Small crankbait (trolled) |
| Fall | 4 to 12 ft | dawn | Jig + minnow combo, Small swimbait (1.5-2") |
| Winter | 4 to 12 ft | midday | Tungsten jig + soft plastic, Tiny jigging spoon |
Bluegill fishing at Lost Island Lake
Start shallow in spring: bluegill sit in 1 to 6 ft that time of year. By summer they slide out to 3 to 12 ft, and by winter most fish are in 4 to 12 ft. If you only fish one area, make it Shallow bay flat: a weed flat around 2 ft that scores prime in spring. In summer the feeding windows fall in early morning and the evening. A small sponge spider (fly) or a micro tube jig covers the summer program.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 1 to 6 ft | midday & dusk | 1/32 oz jig + micro plastic, Tiny popper (evenings) |
| Summer | 3 to 12 ft | dawn & dusk | Small sponge spider (fly), Micro tube jig |
| Fall | 4 to 12 ft | midday | Micro jig + waxworm, Small spoon tipped |
| Winter | 4 to 12 ft | midday | Tungsten ice jig + plastic, Tiny spoon |
Notable structure
- Deep basin: deep basin, around 12 ft
- Break off the point: drop-off, around 12 ft
- Main-lake point: point, around 5 ft
- Secondary point: point, around 2 ft
- Shallow bay flat: weed flat, around 2 ft
- Back-bay flat: weed flat, around 2 ft
Common questions
How deep is Lost Island Lake?
Lost Island Lake is about 12 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 Lost Island Lake?
Anglers target walleye, northern pike, crappie, bluegill, yellow perch on Lost Island Lake.
Where is the best fishing spot on Lost Island Lake?
Break off the point is the top-rated area: a drop-off in about 12 ft of water that rates prime for walleye in fall. Open the map above to see every rated spot for each species and season.
When is the best time to fish Lost Island Lake?
For walleye, the summer bite is best in the evening and early morning. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.
Nearby waters
Trumbull Lake · Virgin Lake · Elk Lake · Twelve Mile Lake · Silver Lake (Palo Alto) · Five Island Lake
See how Lost Island Lake stacks up: best walleye lakes in Iowa · best northern pike lakes in Iowa · best crappie lakes in Iowa · best bluegill lakes in Iowa
Browse all Iowa fishing maps or every water on DepthScout. Bathymetry credit: state fisheries survey programs. How we build these maps. For fishing guidance only, never navigation.