Diamond Lake, Oceana County, MI: Depth Map, Fishing & Water Quality

Today on the lake

Updated 9 Oct 2026, 3:16 am EDT. Get alerts for Diamond Lake

WEATHEROvernight: mostly clear, 41°F, wind SW 2 mph. Friday: sunny, 67°F, wind WSW 1 to 5 mph.

WARNINGSNo weather or fire warnings in effect.

FIREPrescribed burn Newaygo Prairie RX, 78 acres, 12.2 mi away, began 7 Oct 2026. A planned fire set by land managers. Prescribed burn SER 439 South RX, 43 acres, 18.5 mi away, began 8 Oct 2026. A planned fire set by land managers.

BURNINGCampfires and debris burning: check today's status with Michigan DNR.

ALGAEToo small for satellite monitoring (under 1 km²). No bloom reports on record with Michigan DHHS.

National Weather Service; National Interagency Fire Center; U.S. EPA CyAN satellite; Michigan DHHS; Michigan DNR. Weather, warnings, fires and satellite refresh when you open the page (checked at most hourly).

Depth map

5 contours, 5 to 25 ft

0510152025feet

Michigan DNR survey, fetched 7 Oct 2026. Not for navigation.

Size and depth

188 acres · deepest 25 ft (measured) · shoreline about 3.9 mi · clarity about 8 ft

Diamond Lake is the 7th largest of the 87 named lakes of 10 acres or more in Oceana County. By Michigan DNR survey it is the 14th deepest of the 21 with a measured depth. Its water is clearer than 26 of the other 68 lakes in the county with satellite clarity readings. Its shoreline measures about 3.9 miles along the state outline. About 20% of its area is deeper than 15 ft.

Ranks against Oceana County lakes in Michigan hydrography, Michigan DNR lake surveys and Michigan EGLE satellite clarity; shoreline measured from the state outline. How we measure

Water quality

Average water clarity is about 8 ft (Secchi depth 2.6 m, satellite readings 2018–23).

Clarity 8.5 ft of 25 ft

Michigan EGLE satellite clarity, fetched 7 Oct 2026.

Nearby lakes with measured depth

Indian Lake10 ft deep · 4.3 mi · Newaygo County

Alley Lake7 ft deep · 4.7 mi · Newaygo County

Webinguaw Lake13 ft deep · 5.0 mi · Newaygo County

Robinson Lake30 ft deep · 5.5 mi · Newaygo County

Benton Lake24 ft deep · 5.7 mi · Newaygo County

Brush Lake35 ft deep · 6.9 mi · Newaygo County

Michigan DNR survey; straight-line miles.

Common questions

How deep is Diamond Lake?

Diamond Lake is 25 feet at its deepest point, measured by Michigan DNR survey. It covers 188 acres.

How much of Diamond Lake is deeper than 10 feet?

About 41% of the lake's area is deeper than 10 feet, measured from Michigan DNR depth contours.