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Fishing Lewis and Clark Lake: what the data says
31,400-acre reservoir near Yankton. The Missouri's last main-stem pool above Gavins Point Dam. Braided delta sandbars upstream, walleye and sauger on the flats. The lake tops out around 45 ft. The chart is a model: real shoreline, published maximum depth, interpolated in between. A planning tool, never a navigation product. What follows comes from the same scoring engine that paints the spots above.
Lewis and Clark Lake's chart carries 169.2 miles of bank, with 76 islands in the mix. A development index of 8.2 means a maze of bays and points: far more casting targets than a round bowl of the same size. Roughly 79% of the water is 15 ft or less as modeled, the band where the food chain lives.
Walleye fishing at Lewis and Clark Lake
In spring, walleye run shallow here, mostly 4 to 15 ft. Summer pushes them deeper, 15 to 35 ft, and winter fish settle into 20 to 40 ft. Creek inflow is the standout, a inflow / creek mouth at roughly 5 ft, rated prime for spring walleye. Time it for the evening and early morning. You won't need more than a crawler harness on bottom bouncer or a deep crankbait (trolled) most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 15 ft | dusk & dawn | Creek inflow (5 ft) | 1/8 oz jig + minnow, Hair jig |
| Summer | 15 to 35 ft | dusk & dawn | Break off the point (20 ft) | Crawler harness on bottom bouncer, Deep crankbait (trolled) |
| Fall | 12 to 40 ft | dusk & night | Break off the point (20 ft) | Jigging rap, Jig + big minnow |
| Winter | 20 to 40 ft | dusk & dawn | Deep basin (38 ft) | Jigging spoon + minnow head, Rattle bait |
Sauger fishing at Lewis and Clark Lake
Spring puts sauger in skinny water — 4 to 18 ft is the zone. Warm water sends them out to 10 to 30 ft; cold water stacks them in 15 to 45 ft. Creek inflow is the standout, a inflow / creek mouth at roughly 5 ft, rated prime for spring sauger. Plan around early morning and the evening in the warm months. A bottom bouncer + crawler or a 3-way rig with stickbait covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 18 ft | dawn & dusk | Creek inflow (5 ft) | 3/8 oz jig + ringworm, Hair jig + minnow |
| Summer | 10 to 30 ft | dawn & dusk | Old creek channel (23 ft) | Bottom bouncer + crawler, 3-way rig with stickbait |
| Fall | 12 to 35 ft | dusk & dawn | Old creek channel (23 ft) | Jig + big minnow, Blade bait |
| Winter | 15 to 45 ft | dusk | Deep basin (38 ft) | Heavy jigging spoon, Jig + minnow (vertical) |
Smallmouth Bass fishing at Lewis and Clark Lake
When the water first warms, smallmouth bass slide up into 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. If you only fish one area, make it Main-lake point: a point around 11 ft that scores prime in fall. In summer the feeding windows fall in early morning and the evening. Keep a drop shot (goby/minnow) or a ned rig rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | dawn & dusk | Main-lake point (11 ft) | Ned rig, Tube jig |
| Summer | 10 to 30 ft | dawn & dusk | Break off the point (20 ft) | Drop shot (goby/minnow), Ned rig |
| Fall | 8 to 25 ft | midday & dawn | Main-lake point (11 ft) | Jerkbait, Blade bait |
| Winter | 20 to 45 ft | midday | Break off the point (20 ft) | Blade bait, Hair jig |
Channel Catfish fishing at Lewis and Clark Lake
Come spring, look for channel catfish tight to the bank in 3 to 12 ft. Expect a summer slide to 8 to 25 ft, then a winter hold in 20 to 40 ft. Start at Creek inflow. It's a inflow / creek mouth holding about 5 ft of water and rates prime come spring. Prime time lands in after dark and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | dusk | Creek inflow (5 ft) | |
| Summer | 8 to 25 ft | night & dusk | Old creek channel (23 ft) | |
| Fall | 10 to 30 ft | dusk | Old creek channel (23 ft) | |
| Winter | 20 to 40 ft | midday | Deep basin (38 ft) |
Crappie fishing at Lewis and Clark Lake
When the water first warms, crappie slide up into 2 to 8 ft. By summer they slide out to 10 to 25 ft, and by winter most fish are in 15 to 35 ft. If you only fish one area, make it Old creek channel: a creek channel around 23 ft that scores prime in summer. In summer the feeding windows fall in early morning and the evening. Keep a jig trolled/spider-rigged or a small crankbait (trolled) rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | Shallow bay flat (5 ft) | 1/16 oz jig + tube, Curly-tail grub |
| Summer | 10 to 25 ft | dawn & dusk | Old creek channel (23 ft) | Jig trolled/spider-rigged, Small crankbait (trolled) |
| Fall | 8 to 20 ft | dawn | Old creek channel (23 ft) | Jig + minnow combo, Small swimbait (1.5-2") |
| Winter | 15 to 35 ft | midday | Old creek channel (23 ft) | Tungsten jig + soft plastic, Tiny jigging spoon |
Notable structure
- Deep basin: deep basin, around 38 ft
- Old creek channel: creek channel, around 23 ft
- Break off the point: drop-off, around 20 ft
- Main-lake point: point, around 11 ft
- Secondary point: point, around 11 ft
- Shallow bay flat: weed flat, around 5 ft
- Back-bay flat: weed flat, around 5 ft
- Creek inflow: inflow / creek mouth, around 5 ft
- Shallow flat: weed flat, around 4 ft
- Shoreline point: point, around 3 ft
- Weed flat: weed flat, around 2 ft
- Weed flat: weed flat, around 2 ft
Lewis and Clark Lake fishing regulations
Season dates, license requirements, and size and bag limits for South Dakota waters are set by the South Dakota Game, Fish and Parks — and special regulations can apply to Lewis and Clark Lake specifically, so confirm the current rules before you fish.
Check the official South Dakota fishing regulations →
Common questions
How deep is Lewis and Clark Lake?
Lewis and Clark Lake is about 45 ft (14 m) deep at its deepest point. The contours here are modeled from the water's real shape and maximum depth, so treat them as a rough guide.
What fish are in Lewis and Clark Lake?
Anglers target smallmouth bass, walleye, sauger, crappie, channel catfish on Lewis and Clark Lake.
Where is the best fishing spot on Lewis and Clark Lake?
Creek inflow is the top-rated area: a inflow / creek mouth in about 5 ft of water that rates prime for walleye in spring. The map above holds the full rated-spot list for every species and season.
When is the best time to fish Lewis and Clark 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.
What are the fishing regulations for Lewis and Clark Lake?
Fishing on Lewis and Clark Lake is regulated by the South Dakota Game, Fish and Parks. Check the official South Dakota regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Nearby waters
Chalkrock Lake 17 mi, NE · Beaver Lake 17 mi · Henry Lake 20 mi · Missouri River (Gavins Point) 25 mi, SD/NE · Marindahl Lake 26 mi · Missouri River 32 mi, NE · Swan Lake 39 mi · Grove Lake 40 mi, NE · Buckskin Hills Lake 42 mi, NE · Dimock Lake 44 mi · Willow Creek Lake 47 mi, NE · Powder Creek Reservoir 47 mi, NE
See how Lewis and Clark Lake stacks up: best smallmouth bass lakes in South Dakota · best walleye lakes in South Dakota · best sauger lakes in South Dakota · best crappie lakes in South Dakota
Browse all South Dakota fishing maps or see every water on DepthScout. How we build these maps. For fishing guidance only, never navigation.