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157-acre lake near North Dakota. North Dakota Game & Fish survey water. The lake tops out around 20 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. Species by species, here's what the data says the year looks like.
Drawn out, this is 157 acres of water rimmed by 2.4 miles of bank. At index 1.4 the outline is almost a bowl — read the depth changes, not the shoreline. About 93% of the surface sits shallower than 15 ft — that's the weed-and-bait zone. Tip to tip the water measures near 1.1 mi with a 0.3-mi widest point. You'll find it in Mercer County. Closest neighbour on DepthScout: Riverdale Spillway Lake, 13 mi northeast of here.
Start shallow in spring: northern pike sit in 2 to 8 ft that time of year. Warm water sends them out to 8 to 20 ft; cold water stacks them in 5 to 15 ft. Top water on the chart: Shallow bay flat, a weed flat in the 6 ft range, prime in spring. Fish it in early morning and the evening and you'll meet the bite. Throw a bucktail or a weedless spoon over cabbage until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | Shallow bay flat (6 ft) | #5 inline spinner, Spoon (red/white) |
| Summer | 8 to 20 ft | dawn & dusk | Back-bay flat (8 ft) | Bucktail, Weedless spoon over cabbage |
| Fall | 6 to 18 ft | midday & dawn | Shallow bay flat (6 ft) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 5 to 15 ft | midday | Shallow bay flat (6 ft) | Tip-ups, Large jigging spoon |
Start shallow in spring: crappie sit in 2 to 8 ft that time of year. Warm water sends them out to 6 to 20 ft; cold water stacks them in 6 to 20 ft. Top water on the chart: Deep basin, a deep basin in the 20 ft range, prime in winter. Fish it in early morning and the evening and you'll meet the bite. Throw a jig trolled/spider-rigged or a small crankbait (trolled) until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | Shallow bay flat (6 ft) | 1/16 oz jig + tube, Curly-tail grub |
| Summer | 6 to 20 ft | dawn & dusk | Shallow bay flat (6 ft) | Jig trolled/spider-rigged, Small crankbait (trolled) |
| Fall | 8 to 20 ft | dawn | Back-bay flat (8 ft) | Jig + minnow combo, Small swimbait (1.5-2") |
| Winter | 6 to 20 ft | midday | Deep basin (20 ft) | Tungsten jig + soft plastic, Tiny jigging spoon |
In spring, bluegill run shallow here, mostly 1 to 6 ft. Midsummer fish sit out in 4 to 15 ft before dropping to 6 to 20 ft for winter. Spring bluegill concentrate at Shallow bay flat, a prime-rated weed flat around 6 ft. Fish it in early morning and the evening and you'll meet the bite. You won't need more than a small sponge spider (fly) or a micro tube jig most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 6 ft | midday & dusk | Shallow bay flat (6 ft) | 1/32 oz jig + micro plastic, Tiny popper (evenings) |
| Summer | 4 to 15 ft | dawn & dusk | Shallow bay flat (6 ft) | Small sponge spider (fly), Micro tube jig |
| Fall | 6 to 18 ft | midday | Shallow bay flat (6 ft) | Micro jig + waxworm, Small spoon tipped |
| Winter | 6 to 20 ft | midday | Deep basin (20 ft) | Tungsten ice jig + plastic, Tiny spoon |
Spring puts rainbow trout in skinny water — 5 to 20 ft is the zone. Summer fish stay in 5 to 20 ft, and winter fish hold in 4 to 20 ft. Spring rainbow trout concentrate at Creek inflow, a prime-rated inflow / creek mouth around 4 ft. Warm-month bites cluster around early morning and the evening. A dodger + spoon (deep troll) or a flutter spoon covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 20 ft | dawn & dusk | Creek inflow (4 ft) | Inline spinner (silver), Small spoon |
| Summer | 5 to 20 ft | dawn & dusk | Creek inflow (4 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 6 to 20 ft | dawn & dusk | Secondary point (6 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 4 to 20 ft | dawn | Break off the point (12 ft) | Jigging spoon, Tube jig (white) |
9 pieces of structure are mapped here — Deep basin, around 20 ft, is the deepest of them.
Access data: North Dakota Game & Fish — Fishing Facilities. Confirm conditions and fees locally before you launch.
Season dates, license requirements, and size and bag limits for North Dakota waters are set by the North Dakota Game and Fish — and special regulations can apply to Harmony Lake specifically, so confirm the current rules before you fish.
Check the official North Dakota fishing regulations →
Harmony Lake is about 20 ft (6 m) deep at its deepest point. The depth chart here comes from real state fisheries GPS surveys, so the contours reflect measured depths.
Anglers target northern pike, crappie, bluegill, rainbow trout on Harmony Lake.
Shallow bay flat is the top-rated area: a weed flat in about 6 ft of water that rates prime for northern pike in spring. Scroll up to the map for the complete spot list by species and season.
For northern pike, 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.
Fishing on Harmony Lake is regulated by the North Dakota Game and Fish. Check the official North Dakota regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Riverdale Spillway Lake 13 mi · Lake Audubon 27 mi · Coal Lake 28 mi · Nelson Lake 29 mi · Missouri River 30 mi · Hiddenwood Lake 33 mi · Danzig Dam 33 mi · Makoti Lake 35 mi · Lake Brekken 37 mi · South Carlson Lake 38 mi · Lake Holmes 38 mi · Scooby Lake 39 mi
See how Harmony Lake stacks up: best northern pike lakes in North Dakota · best crappie lakes in North Dakota · best bluegill lakes in North Dakota · best rainbow trout lakes in North Dakota
Browse all North Dakota fishing maps or see every water on DepthScout. Bathymetry credit: state fisheries survey programs. How we build these maps. Fish here with a sonar unit that logs? Send us your depth data and we'll improve this chart, credited to you. For fishing guidance only, never navigation.