Lakes / Wyoming / Fremont County / Tri-county Lake
Tri-county Lake, Wyoming
19 acres
Surface Area
80 ft
Max Depth
40 ft
Average Depth
Where It Sits, and How Deep It Goes
Locator - Wyoming
44.00 degrees N, 110.05 degrees W - Fremont County. State and county outlines drawn from Census boundary data; the lake marker is placed by its Wyoming Game and Fish Department coordinates, not by eye. Schematic - not a survey map.
Depth Profile - Tri-county Lake
Schematic cross-section drawn to one shared depth scale - not a survey or bathymetric map.
How Tri-county Lake Stacks Up
- Deeper than 81% of the 120 natural Wyoming lakes ranked by depth.
- Larger than 13% of the 783 lakes counted in Wyoming.
- Its average depth of 40 ft is more than 4 times a typical shallow Wyoming lake, which averages under 10 ft.
- About 51 miles from Jackson, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Ferry Lake | Fremont | 5.8 mi | 51.22 acres |
| Toppan Lake | Teton | 5.9 mi | 5 acres |
| Joy Peak Lake | Teton | 7.0 mi | 4 acres |
| Bridger Lake | Teton | 8.8 mi | 104 acres |
| Enos Lake | Teton | 9.7 mi | 5 acres |
| Divide Lake | Teton | 9.8 mi | 3 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Tri-county Lake
How Big Is Tri-county Lake?
Tri-county Lake covers 19 acres in Fremont County, Wyoming.
How Deep Is Tri-county Lake?
Tri-county Lake reaches 80 ft at its deepest. Its average depth is 40 ft.
What Is the Largest Lake in Fremont County?
Boysen Reservoir is the largest lake in Fremont County, at 19,370.68 acres.
Deepest Natural Lakes in Wyoming
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Deep Lake | Park | 285 acres | 472 ft |
| 2 | Lake Reno | Park | 107 acres | 222 ft |
| 3 | Snowdrift Lake | Teton | 57 acres | 174 ft |
| 4 | Crater Lake | Big Horn | 39 acres | 166 ft |
| 5 | Beauty Lake | Park | 94 acres | 165 ft |
All 120 Wyoming lakes ranked by depth
Largest Lakes in Wyoming
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Yellowstone Lake | Teton | 84,442 acres | - |
| 2 | Flaming Gorge Reservoir | Sweetwater | 38,888.36 acres | 440 ft |
| 3 | Jackson Lake | Teton | 26,853.22 acres | - |
| 4 | Pathfinder Reservoir | Carbon | 22,000 acres | 192 ft |
| 5 | Seminoe Reservoir | Carbon | 20,000 acres | 200 ft |
All 783 Wyoming lakes ranked by surface area
Sources: Wyoming Game & Fish lake data (ID 120025215). Verified October 30, 2026.