Lakes / Oklahoma / Rogers County / Big Flag Lake
Big Flag Lake, Oklahoma
47.2 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Oklahoma
36.20 degrees N, 95.62 degrees W - Rogers 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 Big Flag Lake Stacks Up
- Larger than 42% of the 376 lakes counted in Oklahoma.
- About 21 miles from Tulsa, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Oknoname 131004 Reservoir | Rogers | 2.3 mi | 26.93 acres |
| Big Lake | Rogers | 3.3 mi | 174.46 acres |
| Inola Lake | Rogers | 5.5 mi | 73.88 acres |
| Yonkipin Lake | Rogers | 5.7 mi | 33.36 acres |
| Lock and Dam 18 | Wagoner | 9.6 mi | 274.53 acres |
| Lynn Lane Reservoir | Tulsa | 9.7 mi | 237.05 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Big Flag Lake
How Big Is Big Flag Lake?
Big Flag Lake covers 47.2 acres in Rogers County, Oklahoma.
What Is the Largest Lake in Rogers County?
Oologah Lake is the largest lake in Rogers County, at 29,728.7 acres.
Largest Lakes in Oklahoma
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Eufaula Lake | Pittsburg | 100,734.12 acres | - |
| 2 | Lake Texoma | Marshall | 59,414.43 acres | - |
| 3 | Grand Lake O' The Cherokees | Delaware | 38,902.36 acres | - |
| 4 | Robert S Kerr Reservoir | Haskell | 35,795.91 acres | - |
| 5 | Oologah Lake | Rogers | 29,728.7 acres | - |
All 376 Oklahoma lakes ranked by surface area
Sources: USGS National Hydrography Dataset (The National Map) lake data (ID 130163924). Verified October 30, 2026.