Lakes / Maryland / Charles County / Trinity Lake
Trinity Lake, Maryland
73 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Maryland
38.45 degrees N, 76.84 degrees W - Charles 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 66% of the 78 lakes counted in Maryland.
- The largest lake in Charles County among those counted.
- About 41 miles from Annapolis, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Wheatley Lake | Charles | 2.7 mi | 56 acres |
| Gilbert Pond | Charles | 4.8 mi | 50 acres |
| Saint Marys Lake | St. Mary's | 21 mi | 226 acres |
| Green Holly Pond | St. Mary's | 23 mi | 31 acres |
| Chesapeake Ranch Club Lake | Calvert | 24 mi | 72 acres |
| Pond Number Three | St. Mary's | 26 mi | 27 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Trinity Lake
How Big Is Trinity Lake?
Trinity Lake covers 73 acres in Charles County, Maryland.
What Is the Largest Lake in Charles County?
Trinity Lake is the largest lake in Charles County, at 73 acres.
Largest Lakes in Maryland
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Deep Creek Lake | Garrett | 3,679 acres | - |
| 2 | Liberty Lake | Carroll | 2,920 acres | - |
| 3 | Loch Raven Reservoir | Baltimore | 2,200 acres | - |
| 4 | Prettyboy Reservoir | Baltimore | 1,508 acres | - |
| 5 | Triadelphia Reservoir | Montgomery | 794 acres | - |
All 78 Maryland 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 54017486). Verified October 30, 2026.