20 miles west of Brimley
Chippewa County, Michigan · 46.4209° N, 85.0104° W
The Michigan DNR lists no public access site on Piatt Lake; much of the shore may be private.
Updated 14 Oct 2026, 6:25 pm EDT. Get alerts for Piatt 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.
251 acres · deepest 60 ft (measured) · shoreline about 5.5 mi · clarity about 7 ft
Piatt Lake is the 9th largest of the 112 named lakes of 10 acres or more in Chippewa County. By Michigan DNR survey it is the deepest of the 38 with a measured depth. Its water is clearer than 77 of the other 96 lakes in the county with satellite clarity readings. Its shoreline measures about 5.5 miles along the state outline. About 11% of its area is deeper than 30 ft.
Ranks against Chippewa County lakes in Michigan hydrography, Michigan DNR lake surveys and Michigan EGLE satellite clarity; shoreline measured from the state outline. How we measure
Average water clarity is about 7 ft (Secchi depth 2.1 m, satellite readings 2018–23).
Michigan EGLE satellite clarity, fetched 7 Oct 2026.
125 other lakes of 10+ acres within about 24 miles of Piatt Lake, 6 with a page here (darker blue). Sources: Michigan DNR, US Census Bureau.
Michigan DNR survey; straight-line miles.
Piatt Lake is 60 feet at its deepest point, measured by Michigan DNR survey. It covers 251 acres.
About 59% of the lake's area is deeper than 10 feet, measured from Michigan DNR depth contours.