Lakes / Alaska / Matanuska-Susitna County / Flat Lake
Flat Lake, Matanuska-Susitna County, Alaska
311 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Alaska
61.53 degrees N, 150.01 degrees W - Matanuska-Susitna 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 Flat Lake Stacks Up
- Larger than 68% of the 2,450 lakes counted in Alaska.
- About 22 miles from Anchorage, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Sara Lake | Matanuska-Susitna | 0.6 mi | 52 acres |
| Susan Lake | Matanuska-Susitna | 0.7 mi | 45 acres |
| Mirror Lake | Matanuska-Susitna | 0.9 mi | 50 acres |
| Never-Never Lake | Matanuska-Susitna | 1.4 mi | 36 acres |
| Crooked Lake | Matanuska-Susitna | 1.5 mi | 240 acres |
| East Papoose Lake | Matanuska-Susitna | 2.1 mi | 163 acres |
Straight-line distance between lake centers.
Facts and Figures
Waterbody ID{A5FFA72B-D9C8-4FA8-9340-65F198B9A974}
CountyMatanuska-Susitna
Lake TypeLake
Coordinates61.5311, -150.0104
Questions About Flat Lake
How Big Is Flat Lake?
Flat Lake covers 311 acres in Matanuska-Susitna County, Alaska.
What Is the Largest Lake in Matanuska-Susitna County?
Lake Louise is the largest lake in Matanuska-Susitna County, at 14,705 acres.
Largest Lakes in Alaska
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Iliamna Lake | Lake and Peninsula | 654,518 acres | - |
| 2 | Becharof Lake | Lake and Peninsula | 289,706 acres | - |
| 3 | Teshekpuk Lake | North Slope | 206,614 acres | - |
| 4 | Naknek Lake | Lake and Peninsula | 145,357 acres | - |
| 5 | Dall Lake | Bethel | 111,681 acres | - |
All 2,450 Alaska 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 {A5FFA72B-D9C8-4FA8-9340-65F198B9A974}). Verified October 30, 2026.