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Fishing Hannen Lake: what the data says
58-acre lake near Benton County. Iowa DNR survey water. The lake tops out around 18 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. Below is the species-by-species picture, pulled from the same data the map uses.
Largemouth Bass fishing at Hannen Lake
Start shallow in spring: largemouth bass sit in 2 to 10 ft that time of year. By summer they slide out to 5 to 18 ft, and by winter most fish are in 5 to 18 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 texas-rigged 10" worm or a deep-diving crankbait covers the summer program.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 2 to 10 ft | dawn & dusk | Spinnerbait, Chatterbait |
| Summer | 5 to 18 ft | dawn & dusk | Texas-rigged 10" worm, Deep-diving crankbait |
| Fall | 4 to 15 ft | midday & dawn | Squarebill crankbait (shad), Spinnerbait |
| Winter | 5 to 18 ft | midday | Blade bait, Jigging spoon |
Bluegill fishing at Hannen Lake
Spring bluegill on Hannen Lake hold shallow, usually 1 to 6 ft. By summer they slide out to 4 to 15 ft, and by winter most fish are in 5 to 18 ft. Shallow bay flat is the standout, a weed flat at roughly 2 ft, rated prime for spring bluegill. Plan around early morning and the evening in the warm months. Summer baits: a small sponge spider (fly) or a micro tube jig gets it done.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 1 to 6 ft | midday & dusk | 1/32 oz jig + micro plastic, Tiny popper (evenings) |
| Summer | 4 to 15 ft | dawn & dusk | Small sponge spider (fly), Micro tube jig |
| Fall | 6 to 18 ft | midday | Micro jig + waxworm, Small spoon tipped |
| Winter | 5 to 18 ft | midday | Tungsten ice jig + plastic, Tiny spoon |
Crappie fishing at Hannen Lake
Start shallow in spring: crappie sit in 2 to 8 ft that time of year. Summer pushes them deeper, 5 to 18 ft, and winter fish settle into 5 to 18 ft. If you only fish one area, make it Deep basin: a deep basin around 18 ft that scores prime in winter. 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 | 5 to 18 ft | dawn & dusk | Jig trolled/spider-rigged, Small crankbait (trolled) |
| Fall | 5 to 18 ft | dawn | Jig + minnow combo, Small swimbait (1.5-2") |
| Winter | 5 to 18 ft | midday | Tungsten jig + soft plastic, Tiny jigging spoon |
Yellow Perch fishing at Hannen Lake
Start shallow in spring: yellow perch sit in 3 to 12 ft that time of year. Summer pushes them deeper, 5 to 18 ft, and winter fish settle into 5 to 18 ft. The spot to know is Deep basin, a deep basin in about 18 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 | 5 to 18 ft | dawn | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 5 to 18 ft | midday | Jigging spoon (small), Perch rig / spreader |
| Winter | 5 to 18 ft | midday & dawn | Tungsten jig + spikes, Rattle spoon (small) |
Channel Catfish fishing at Hannen Lake
Start shallow in spring: channel catfish sit in 3 to 12 ft that time of year. By summer they slide out to 5 to 18 ft, and by winter most fish are in 5 to 18 ft. If you only fish one area, make it Deep basin: a deep basin around 18 ft that scores prime in winter. In summer the feeding windows fall in after dark and the evening.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 3 to 12 ft | dusk | |
| Summer | 5 to 18 ft | night & dusk | |
| Fall | 5 to 18 ft | dusk | |
| Winter | 5 to 18 ft | midday |
Walleye fishing at Hannen Lake
Spring walleye on Hannen Lake hold shallow, usually 4 to 15 ft. By summer they slide out to 5 to 18 ft, and by winter most fish are in 5 to 18 ft. The spot to know is Break off the point, a drop-off in about 13 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 | 5 to 18 ft | dusk & dawn | Crawler harness on bottom bouncer, Deep crankbait (trolled) |
| Fall | 5 to 18 ft | dusk & night | Jigging rap, Jig + big minnow |
| Winter | 5 to 18 ft | dusk & dawn | Jigging spoon + minnow head, Rattle bait |
Notable structure
- Deep basin: deep basin, around 18 ft
- Break off the point: drop-off, around 13 ft
- Main-lake point: point, around 9 ft
- Secondary point: point, around 2 ft
- Shallow bay flat: weed flat, around 2 ft
Common questions
How deep is Hannen Lake?
Hannen Lake is about 18 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 Hannen Lake?
Anglers target largemouth bass, walleye, crappie, bluegill, channel catfish, yellow perch on Hannen Lake.
Where is the best fishing spot on Hannen Lake?
Shallow bay flat is the top-rated area: a weed flat in about 2 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 Hannen 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
Iowa River · Iowa Lake (Iowa Co.) · Rodgers Park Lake · Pleasant Creek Lake · Cedar River · Kent Park Lake
See how Hannen Lake stacks up: best largemouth bass lakes in Iowa · best walleye 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.