Updated 9 Oct 2026, 3:36 am EDT. Get alerts for Posey Lake
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Michigan DNR survey, fetched 7 Oct 2026. Not for navigation.
140 acres · deepest 45 ft (measured) · shoreline about 3.9 mi · clarity about 8 ft
Posey Lake is the 8th largest of the 46 named lakes of 10 acres or more in Lenawee County. By Michigan DNR survey it is the 8th deepest of the 20 with a measured depth. Its water is clearer than 12 of the other 40 lakes in the county with satellite clarity readings. Its shoreline measures about 3.9 miles along the state outline. About 14% of its area is deeper than 30 ft.
Ranks against Lenawee County lakes in Michigan hydrography, Michigan DNR lake surveys and Michigan EGLE satellite clarity; shoreline measured from the state outline. How we measure
Michigan DNR has stocked Posey Lake 2 times since 1993. The most recent stocking was 1,000 walleye on 18 November 1995. Species stocked: walleye.
Source: Michigan DNR Fisheries, fetched 7 Oct 2026. How we measure
Measured from Michigan DNR contours. How we measure
Historically recorded species, from records through 1927: bluegill, common carp, golden redhorse, largemouth bass, pumpkinseed, white sucker, yellow bullhead. Historic records, not a current survey.
Michigan Fish Atlas.
Average water clarity is about 8 ft (Secchi depth 2.4 m, satellite readings 2018–23).
Michigan EGLE satellite clarity, fetched 7 Oct 2026.
Michigan DNR survey; straight-line miles.
Posey Lake is 45 feet at its deepest point, measured by Michigan DNR survey. It covers 140 acres.
Yes. Michigan DNR has stocked it 2 times since 1993, most recently 1,000 walleye on 18 November 1995.
About 74% of the lake's area is deeper than 10 feet, measured from Michigan DNR depth contours.