Lakes / Alaska / Matanuska-Susitna County / Trinity Lake
Trinity Lake, Alaska
319 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Alaska
61.60 degrees N, 151.45 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 Trinity Lake Stacks Up
- Larger than 69% of the 2,450 lakes counted in Alaska.
- About 57 miles from Anchorage, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Movie Lake | Matanuska-Susitna | 1.9 mi | 115 acres |
| Judd Lake | Matanuska-Susitna | 4.1 mi | 319 acres |
| Kitty Lake | Matanuska-Susitna | 4.8 mi | 81 acres |
| Talachulitna Lake | Matanuska-Susitna | 6.2 mi | 39 acres |
| Coal Creek Lake | Matanuska-Susitna | 8.5 mi | 560 acres |
| Hiline Lake | Matanuska-Susitna | 10 mi | 528 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Trinity Lake
How Big Is Trinity Lake?
Trinity Lake covers 319 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 33804455). Verified October 30, 2026.