Michigan has 4 lakes named Diamond Lake of 10 acres or more, in 4 counties. The largest is in Cass County (1,041 acres); the deepest measured, in Cass County (64 ft). 2 have been stocked by the DNR and 2 have a public launch.
How they differ: The clearest is in Osceola County, about 11 ft of visibility in the 2023 satellite estimate; the most recently stocked is in Cass County (2 Jun 2026); public launches are listed on the ones in Cass County and Osceola County; the other 2 have no public access site in the DNR list; 2 have a full page here with a depth map, linked below.
Circles sized by area and shaded by deepest measured point. Michigan DNR lake polygons and depth surveys.
Largest first. The nearest town is the closest place in the Census list to the middle of the lake.
| Lake | Near | Acres | Deepest | Clarity | Stockings | Launches |
|---|---|---|---|---|---|---|
| Diamond LakeCass County, Penn Township | 2 mi southeast of Cassopolis | 1,041 | 64 ft | 8 ft | 38 times, last 2026 | 1 |
| Diamond LakeOceana County | 4 mi northwest of White Cloud | 188 | 25 ft | 8 ft | ||
| Diamond LakeMecosta County, Martiny Township | 4 mi southwest of Barryton | 86 | 12 ft | 8 ft | 5 times, last 2022 | |
| Diamond LakeOsceola County, Burdell Township | 2 mi southwest of Tustin | 59 | 60 ft | 11 ft | 1 |
Depth: Michigan DNR survey soundings; "about" figures are older Michigan EGLE estimates. Clarity: Michigan EGLE satellite estimate, 2023 average. Stockings: Michigan DNR Fisheries. Launches: Michigan DNR public access sites. Towns: US Census Bureau 2024 Gazetteer. How we measure