3 miles northwest of Onsted
Lenawee County, Michigan · 42.0320° N, 84.2361° W
Directions to Deep LakeApple Maps
Directions open in Google or Apple Maps, to the Michigan DNR public access site.
Updated 14 Oct 2026, 6:21 pm EDT. Get alerts for Deep Lake
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).
Michigan DNR survey, fetched 7 Oct 2026. Not for navigation.
70 acres · deepest 50 ft (measured) · shoreline about 3.3 mi · clarity about 12 ft
Deep Lake is the 16th largest of the 46 named lakes of 10 acres or more in Lenawee County. By Michigan DNR survey it is the 7th deepest of the 20 with a measured depth. Its water is clearer than 21 of the other 40 lakes in the county with satellite clarity readings. Its shoreline measures about 3.3 miles along the state outline. About 60% of its area is deeper than 20 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
1 public access site on Deep Lake.
Michigan DNR boating access, fetched 7 Oct 2026.
Michigan DNR has stocked Deep Lake 39 times since 1987. The most recent stocking was 1,731 rainbow trout on 29 April 2025. Species stocked: coho salmon, rainbow trout.
Latest: 29 Apr 2025: 1,731 rainbow trout.
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: blackchin shiner, blacknose shiner, bluegill, bluntnose minnow, grass pickerel, iowa darter, johnny darter, largemouth bass, least darter, mimic shiner, northern longear sunfish, rock bass, western banded killifish, yellow perch. Historic records, not a current survey.
Michigan Fish Atlas.
Average water clarity is about 12 ft (Secchi depth 3.5 m, satellite readings 2018–23).
Michigan EGLE satellite clarity, fetched 7 Oct 2026.
48 other lakes of 10+ acres within about 6 miles of Deep Lake, 6 with a page here (darker blue); 1 public launch in magenta. Sources: Michigan DNR, US Census Bureau.
Michigan DNR survey; straight-line miles.
Deep Lake is 50 feet at its deepest point, measured by Michigan DNR survey. It covers 70 acres.
Yes. 1 public access site is listed: Deep Lake.
Yes. Michigan DNR has stocked it 39 times since 1987, most recently 1,731 rainbow trout on 29 April 2025.
About 66% of the lake's area is deeper than 10 feet, measured from Michigan DNR depth contours.