Lakes / North Dakota / Lake Ilo
Lake Ilo, North Dakota
1,000 acres
Surface Area
12.8 ft
Max Depth
4.8 ft
Average Depth
22.3 mi
Shoreline
2,187 ft
Surface Elevation
Where It Sits, and How Deep It Goes
Locator - North Dakota
47.34 degrees N, 102.67 degrees W - Dunn County. State and county outlines drawn from Census boundary data; the lake marker is placed by its North Dakota Game and Fish coordinates, not by eye. Schematic - not a survey map.
Depth Profile - Lake Ilo
Schematic cross-section drawn to one shared depth scale - not a survey or bathymetric map.
How Lake Ilo Stacks Up
- The largest lake in Dunn County among those counted.
- A shallow lake - typical of most North Dakota lakes, which run under 20 ft at their deepest.
- About 88 miles from Minot, as the crow flies.
- 3 fish species on the NDGF list for this lake.
Fish Species
Northern PikeYellow PerchWalleye
Species recorded for this lake. Presence only - no abundance ratings.
Facts and Figures
Waterbody ID71591767
CountyDunn
Coordinates47.3432, -102.6686
Deepest Natural Lakes in North Dakota
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Stump Lake | Nelson | 17,681 acres | 77.1 ft |
| 2 | Devils Lake | Ramsey | 110,763 acres | 58.1 ft |
| 3 | Free Peoples Lake | Benson | 891 acres | 55.3 ft |
| 4 | Spiritwood Lake | Stutsman | 493 acres | 54.7 ft |
| 5 | Moon Lake | Barnes | 115 acres | 54.3 ft |
Largest Lakes in North Dakota
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Lake Sakakawea | McLean | 350,520 acres | 180 ft |
| 2 | Lake Oahe | Emmons | 309,912.6 acres | 200 ft |
| 3 | Devils Lake | Ramsey | 110,763 acres | 58.1 ft |
| 4 | Stump Lake | Nelson | 17,681 acres | 77.1 ft |
| 5 | Long Lake | Burleigh | 16,934 acres | - |
Sources: North Dakota Game and Fish lake data (ID 71591767); USGS EPQS. Verified October 30, 2026.