Lakes / Alaska / Kenai Peninsula County / Big Johnstone Lake
Big Johnstone Lake, Alaska
3,558 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Alaska
60.00 degrees N, 148.77 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 Big Johnstone Lake Stacks Up
- Larger than 94% of the 2,450 lakes counted in Alaska.
- About 92 miles from Anchorage, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Little Johnstone Lake | Kenai Peninsula | 5.5 mi | 191 acres |
| Nellie Juan Lake | Kenai Peninsula | 19 mi | 1,176 acres |
| Bear Lake | Kenai Peninsula | 24 mi | 415 acres |
| Lower Paradise Lake | Kenai Peninsula | 26 mi | 183 acres |
| Troop Lake | Kenai Peninsula | 26 mi | 27 acres |
| Upper Paradise Lake | Kenai Peninsula | 26 mi | 210 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Big Johnstone Lake
How Big Is Big Johnstone Lake?
Big Johnstone Lake covers 3,558 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 87688583). Verified October 30, 2026.