Lakes / North Dakota / Grass Lake
Grass Lake, Richland County, North Dakota
936 acres
Surface Area
13.3 ft
Max Depth
9.3 ft
Average Depth
12 mi
Shoreline
1,092 ft
Surface Elevation
Where It Sits, and How Deep It Goes
Locator - North Dakota
46.10 degrees N, 97.24 degrees W - Richland 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 - Grass Lake
Schematic cross-section drawn to one shared depth scale - not a survey or bathymetric map.
How Grass Lake Stacks Up
- The largest lake in Richland County among those counted.
- A shallow lake - typical of most North Dakota lakes, which run under 20 ft at their deepest.
- About 58 miles from Fargo, as the crow flies.
- 6 fish species on the NDGF list for this lake.
Fish Species
Northern PikeYellow PerchBlack CrappieWalleyeCommon CarpBlack Bullhead
Species recorded for this lake. Presence only - no abundance ratings.
Facts and Figures
Waterbody ID144883761
CountyRichland
Coordinates46.0990, -97.2387
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 144883761); USGS EPQS. Verified October 30, 2026.