Lakes / Arizona / Coconino County / National Tank
National Tank, Arizona
29 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Arizona
35.97 degrees N, 112.94 degrees W - Coconino 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 National Tank Stacks Up
- Larger than 8% of the 198 lakes counted in Arizona.
- About 90 miles from Flagstaff, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Laguna Lake | Coconino | 7.5 mi | 89 acres |
| Red Lake | Coconino | 23 mi | 501 acres |
| Little Red Lake | Coconino | 23 mi | 86 acres |
| Red Lake Tank | Coconino | 24 mi | 56 acres |
| Stone Lake | Coconino | 38 mi | 148 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About National Tank
How Big Is National Tank?
National Tank covers 29 acres in Coconino County, Arizona.
What Is the Largest Lake in Coconino County?
Mormon Lake is the largest lake in Coconino County, at 4,904 acres.
Largest Lakes in Arizona
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Lake Mohave | Mohave | 27,571 acres | - |
| 2 | Lake Havasu | Mohave | 18,560 acres | - |
| 3 | San Carlos Reservoir | Gila | 13,059 acres | - |
| 4 | Lake Pleasant | Yavapai | 9,186 acres | - |
| 5 | Theodore Roosevelt Lake | Gila | 9,075 acres | - |
All 198 Arizona lakes ranked by surface area
Sources: USGS NHD (The National Map NHD MapServer layer 12) named waterbodies FTYPE 390/436; counties via Census point-in-polygon lake data (ID 128916079). Verified October 30, 2026.