Lakes / New Mexico / San Miguel County / Conchas Lake
Conchas Lake, New Mexico
3,412.74 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - New Mexico
35.38 degrees N, 104.22 degrees W - San Miguel County. State and county outlines drawn from Census boundary data; the lake marker is placed by its USGS National Hydrography Dataset coordinates, not by eye. Schematic - not a survey map.
How Conchas Lake Stacks Up
- Ranks #7 for surface area among the New Mexico lakes counted so far - 3,412.74 acres.
- The largest lake in San Miguel County among those counted.
- About 99 miles from Santa Fe, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Church Lake | Harding | 30 mi | 145.3 acres |
| Westfall Lake | Harding | 32 mi | 29.41 acres |
| Goodhue Lake | Harding | 32 mi | 37.31 acres |
| Salitre Tank | Guadalupe | 32 mi | 27.06 acres |
| Tucumcari Lake | Quay | 33 mi | 358.06 acres |
| Llonidas Lake | San Miguel | 33 mi | 32.87 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Conchas Lake
How Big Is Conchas Lake?
Conchas Lake covers 3,412.74 acres in San Miguel County, New Mexico.
What Is the Largest Lake in San Miguel County?
Conchas Lake is the largest lake in San Miguel County, at 3,412.74 acres.
Largest Lakes in New Mexico
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Navajo Reservoir | San Juan | 15,363.3 acres | - |
| 2 | Elephant Butte Reservoir | Sierra | 10,908.51 acres | - |
| 3 | Ute Reservoir | Quay | 5,446.35 acres | - |
| 4 | Caballo Reservoir | Sierra | 4,617.43 acres | - |
| 5 | Heron Reservoir | Rio Arriba | 4,497.07 acres | - |
All 309 New Mexico lakes ranked by surface area
Sources: USGS National Hydrography Dataset (The National Map) lake data (ID 136224894). Verified October 30, 2026.