Lakes / Indiana / Noble County / Diamond Lake
Diamond Lake, Noble County, Indiana
109.42 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Indiana
41.44 degrees N, 85.52 degrees W - Noble 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 Diamond Lake Stacks Up
- Larger than 67% of the 425 lakes counted in Indiana.
- About 32 miles from Fort Wayne, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Eagle Lake | Noble | 1.2 mi | 78.24 acres |
| Engle Lake | Noble | 2.8 mi | 41.63 acres |
| Indian Lake | Noble | 3.1 mi | 33.43 acres |
| Sparta Lake | Noble | 3.5 mi | 32.37 acres |
| Deer Lake | Noble | 4.8 mi | 31.94 acres |
| Lower Long Lake | Noble | 4.8 mi | 63.57 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Diamond Lake
How Big Is Diamond Lake?
Diamond Lake covers 109.42 acres in Noble County, Indiana.
What Is the Largest Lake in Noble County?
Sylvan Lake is the largest lake in Noble County, at 653.42 acres.
Largest Lakes in Indiana
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Monroe Lake | Monroe | 11,112.45 acres | - |
| 2 | Patoka Lake | Orange | 9,120.83 acres | - |
| 3 | Brookville Lake | Franklin | 4,364.22 acres | - |
| 4 | Lake Wawasee | Kosciusko | 3,426.28 acres | - |
| 5 | Broad Pond | Gibson | 2,941.52 acres | - |
All 425 Indiana lakes ranked by surface area
Sources: USGS National Hydrography Dataset (The National Map) lake data (ID 155642501). Verified October 30, 2026.