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1,167-acre lake near Richland County. North Dakota Game & Fish survey water. The lake tops out around 13 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.
Spring walleye on Grass Lake hold shallow, usually 3 to 13 ft. Summer fish stay in 4 to 13 ft, and winter fish hold in 4 to 13 ft. The spot to know is Deep basin, a deep basin in about 13 ft of water that rates prime for walleye in winter. Plan around the evening and early morning in the warm months. Summer baits: a crawler harness on bottom bouncer or a deep crankbait (trolled) gets it done.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 3 to 13 ft | dusk & dawn | 1/8 oz jig + minnow, Hair jig |
| Summer | 4 to 13 ft | dusk & dawn | Crawler harness on bottom bouncer, Deep crankbait (trolled) |
| Fall | 4 to 13 ft | dusk & night | Jigging rap, Jig + big minnow |
| Winter | 4 to 13 ft | dusk & dawn | Jigging spoon + minnow head, Rattle bait |
In spring, northern pike run shallow here, mostly 2 to 8 ft. They move out to 4 to 13 ft in summer and finish the year down in 4 to 13 ft. The spot to know is Shallow bay flat, a weed flat in about 3 ft of water that rates prime for northern pike in spring. In summer the feeding windows fall in early morning and the evening. Tie on a bucktail or a weedless spoon over cabbage and you're in the game.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | #5 inline spinner, Spoon (red/white) |
| Summer | 4 to 13 ft | dawn & dusk | Bucktail, Weedless spoon over cabbage |
| Fall | 4 to 13 ft | midday & dawn | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 4 to 13 ft | midday | Tip-ups, Large jigging spoon |
In spring, yellow perch run shallow here, mostly 3 to 12 ft. They move out to 4 to 13 ft in summer and finish the year down in 4 to 13 ft. If you only fish one area, make it Shallow bay flat: a weed flat around 3 ft that scores prime in spring. Best bite is early morning. Summer baits: a drop-shot micro plastics or a small spoon tipped with worm gets it done.
| 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 13 ft | dawn | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 4 to 13 ft | midday | Jigging spoon (small), Perch rig / spreader |
| Winter | 4 to 13 ft | midday & dawn | Tungsten jig + spikes, Rattle spoon (small) |
In spring, smallmouth bass run shallow here, mostly 3 to 12 ft. By summer they slide out to 4 to 13 ft, and by winter most fish are in 4 to 13 ft. The spot to know is Main-lake point, a point in about 3 ft of water that rates prime for smallmouth bass in fall. Best bite is early morning and the evening. A drop shot (goby/minnow) or a ned rig covers the summer program.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 3 to 12 ft | dawn & dusk | Ned rig, Tube jig |
| Summer | 4 to 13 ft | dawn & dusk | Drop shot (goby/minnow), Ned rig |
| Fall | 4 to 13 ft | midday & dawn | Jerkbait, Blade bait |
| Winter | 4 to 13 ft | midday | Blade bait, Hair jig |
Spring white bass on Grass Lake hold shallow, usually 2 to 12 ft. By summer they slide out to 4 to 13 ft, and by winter most fish are in 4 to 13 ft. Creek inflow is the standout, a inflow / creek mouth at roughly 2 ft, rated prime for spring white bass. Plan around early morning and the evening in the warm months.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 2 to 12 ft | dawn & dusk | see map |
| Summer | 4 to 13 ft | dawn & dusk | see map |
| Fall | 3 to 13 ft | dawn & dusk | see map |
| Winter | 4 to 13 ft | midday | see map |
Start shallow in spring: crappie sit in 2 to 8 ft that time of year. By summer they slide out to 4 to 13 ft, and by winter most fish are in 4 to 13 ft. If you only fish one area, make it Old creek channel: a creek channel around 13 ft that scores prime in fall. In summer the feeding windows fall in 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 | 4 to 13 ft | dawn & dusk | Jig trolled/spider-rigged, Small crankbait (trolled) |
| Fall | 4 to 13 ft | dawn | Jig + minnow combo, Small swimbait (1.5-2") |
| Winter | 4 to 13 ft | midday | Tungsten jig + soft plastic, Tiny jigging spoon |
Grass Lake also holds bluegill (3 to 13 ft in summer), channel catfish (4 to 13 ft in summer). Pick any of them on the map above for rated spots and bait picks.
How deep is Grass Lake?
Grass Lake is about 13 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 Grass Lake?
Anglers target smallmouth bass, walleye, white bass, northern pike, crappie, bluegill, channel catfish, yellow perch on Grass Lake.
Where is the best fishing spot on Grass Lake?
Deep basin is the top-rated area: a deep basin in about 13 ft of water that rates prime for walleye in winter. Open the map above to see every rated spot for each species and season.
When is the best time to fish Grass 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.
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See how Grass Lake stacks up: best smallmouth bass lakes in North Dakota · best walleye lakes in North Dakota · best white bass lakes in North Dakota · best northern pike lakes in North Dakota
Browse all North Dakota fishing maps or every water on DepthScout. Bathymetry credit: state fisheries survey programs. How we build these maps. For fishing guidance only, never navigation.