Lakes / Alaska / Kenai Peninsula County / Tustumena Lake
Tustumena Lake, Alaska
73,354 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Alaska
60.18 degrees N, 150.87 degrees W - Kenai Peninsula 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 Tustumena Lake Stacks Up
- Ranks #7 for surface area among the Alaska lakes counted so far - 73,354 acres.
- The largest lake in Kenai Peninsula County among those counted.
- About 29 miles from Kenai, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Point Lake | Kenai Peninsula | 4.3 mi | 43 acres |
| Nikolai Lake | Kenai Peninsula | 5.7 mi | 62 acres |
| Kolomin Lake | Kenai Peninsula | 6.9 mi | 63 acres |
| North Kolomin Lake | Kenai Peninsula | 7.1 mi | 51 acres |
| Fox Lake | Kenai Peninsula | 7.6 mi | 222 acres |
| Windy Lake | Kenai Peninsula | 10 mi | 45 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Tustumena Lake
How Big Is Tustumena Lake?
Tustumena Lake covers 73,354 acres in Kenai Peninsula County, Alaska.
What Is the Largest Lake in Kenai Peninsula County?
Tustumena Lake is the largest lake in Kenai Peninsula County, at 73,354 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 120013246). Verified October 30, 2026.