Lakes / Alaska / Matanuska-Susitna County / Flat Horn Lake
Flat Horn Lake, Alaska
1,202 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Alaska
61.46 degrees N, 150.42 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 Horn Lake Stacks Up
- Larger than 88% of the 2,450 lakes counted in Alaska.
- About 24 miles from Anchorage, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Maid Lake | Matanuska-Susitna | 2.9 mi | 97 acres |
| Beaver Lake | Matanuska-Susitna | 7.1 mi | 143 acres |
| Yohn Lake | Matanuska-Susitna | 8.1 mi | 78 acres |
| Hock Lake | Matanuska-Susitna | 8.7 mi | 95 acres |
| Yensus Lake | Matanuska-Susitna | 9.6 mi | 58 acres |
| Middle Lake | Matanuska-Susitna | 10 mi | 69 acres |
Straight-line distance between lake centers.
Facts and Figures
Waterbody ID{3dded1ee-6c18-40de-aad4-2bf44b41d3a8}
CountyMatanuska-Susitna
Lake TypeLake
Coordinates61.4641, -150.4207
Questions About Flat Horn Lake
How Big Is Flat Horn Lake?
Flat Horn Lake covers 1,202 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 {3dded1ee-6c18-40de-aad4-2bf44b41d3a8}). Verified October 30, 2026.