Lakes / Minnesota / St. Louis River Estuary
St. Louis River Estuary, Minnesota
10,255 acres
Surface Area
55 ft
Max Depth
195.53 mi
Shoreline
602 ft
Surface Elevation
Where It Sits, and How Deep It Goes
Locator - Minnesota
46.72 degrees N, 92.16 degrees W - St. Louis County. State and county outlines drawn from Census boundary data; the lake marker is placed by its Minnesota DNR coordinates, not by eye. Schematic - not a survey map.
Depth Profile - St. Louis River Estuary
Schematic cross-section drawn to one shared depth scale - not a survey or bathymetric map.
How St. Louis River Estuary Stacks Up
- About 6 miles from Duluth, as the crow flies.
- 20 fish species on the DNR list for this lake.
Fish Species
WalleyeNorthern PikeBlack CrappiePumpkinseedYellow PerchChannel CatfishLake SturgeonRock BassWhite BassAlewifeBrown BullheadFreshwater DrumRiver RuffeShorthead RedhorseSilver RedhorseTadpole MadtomTrout-PerchWhite PerchWhite SuckerYellow Bullhead
Species recorded for this lake. Presence only - no abundance ratings.
Facts and Figures
Lake ID (DOW)69129100
CountySt. Louis
Coordinates46.7154, -92.1572
Deepest Natural Lakes in Minnesota
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Mahnomen, Alstead & Arco Mine | Crow Wing | 272 acres | 525 ft |
| 2 | Sabin | St. Louis | 156 acres | 465 ft |
| 3 | Gilbert Pit | St. Louis | 243 acres | 443 ft |
| 4 | Portsmouth Mine | Crow Wing | 149 acres | 395 ft |
| 5 | St James Pit | St. Louis | 124 acres | 381 ft |
Largest Lakes in Minnesota
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Lake of the Woods | Lake of the Woods | 725,583 acres | 210 ft |
| 2 | Rainy | St. Louis | 210,200 acres | 161 ft |
| 3 | Mille Lacs | Mille Lacs | 128,250 acres | 42 ft |
| 4 | Red (Upper Red) | Beltrami | 119,294 acres | 15 ft |
| 5 | Leech | Cass | 103,444 acres | 150 ft |
Sources: Minnesota DNR lake data (ID 69129100); USGS. Verified October 30, 2026.