Putnam, Minnesota
141 acres
Surface Area
11 ft
Max Depth
1.99 mi
Shoreline
1,484 ft
Surface Elevation
Where It Sits, and How Deep It Goes
Locator - Minnesota
47.77 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 - Putnam
Schematic cross-section drawn to one shared depth scale - not a survey or bathymetric map.
How Putnam Stacks Up
- A shallow lake - typical of most Minnesota lakes, which run under 20 ft at their deepest.
- About 68 miles from Duluth, as the crow flies.
Facts and Figures
Lake ID (DOW)69026400
CountySt. Louis
Coordinates47.7664, -92.1626
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 69026400); USGS. Verified October 30, 2026.