MI · ranked by public data
4 Ionia County lakes are at least 50 state-mapped acres with an IFR-surveyed depth, out of 22 documented lakes in the county.
Ionia County, MI
57 ft maximum depth · 357 acres
Ionia County, MI
37 ft maximum depth · 96 acres
Ionia County, MI
20 ft maximum depth · 70 acres
Ionia County, MI
15 ft maximum depth · 315 acres
Methodology
FAQ
Long Lake — Long Lake in Ionia County has the deepest recorded IFR survey point of any ranked Ionia County lake, at 57 feet — a historical DNR survey figure, not a modern re-survey.
Source data: Michigan DNR Institute for Fisheries Research historical lake surveys (largely mid-1900s; depths not re-confirmed by modern survey) and Michigan DNR GIS lake polygons, as aggregated by LakeList.Lake outlines are shoreline shapes from LakeList and the USGS National Hydrography Dataset; they illustrate a lake's form and are not depth or navigation charts.