Lakes / Alaska / Yukon-Koyukuk County / Big Rat Lake
Big Rat Lake, Yukon-Koyukuk County, Alaska
348 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Alaska
67.13 degrees N, 143.60 degrees W - Yukon-Koyukuk 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 Rat Lake Stacks Up
- Larger than 71% of the 2,450 lakes counted in Alaska.
- About 196 miles from Fairbanks, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Mink Lake | Yukon-Koyukuk | 2.0 mi | 295 acres |
| Graphite Lake | Yukon-Koyukuk | 6.4 mi | 3,059 acres |
| Red Dog Lake | Yukon-Koyukuk | 9.9 mi | 61 acres |
| Moosehorn Lake | Yukon-Koyukuk | 10 mi | 45 acres |
| Rat Lake | Yukon-Koyukuk | 11 mi | 142 acres |
| Island Lake | Yukon-Koyukuk | 13 mi | 84 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Big Rat Lake
How Big Is Big Rat Lake?
Big Rat Lake covers 348 acres in Yukon-Koyukuk County, Alaska.
What Is the Largest Lake in Yukon-Koyukuk County?
Lake Minchumina is the largest lake in Yukon-Koyukuk County, at 11,712 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 35817843). Verified October 30, 2026.