Lake Michigan and Lake Huron carry two separate names, but they sit at the exact same water-surface elevation, connected through the Straits of Mackinac - hydrologically they are one lake. Toggle between separate lake colors and a unified single-lake view, or highlight the shallow strait that joins them.
Published figures: shared surface elevation about 176 m above sea level; Michigan reaches about 281 m deep, Huron about 229 m deep; combined surface area about 117,340 sq km, the largest connected body of fresh water on Earth by area.
Drag to orbit and scroll or pinch to zoom. Everything renders on your device with WebGL.
Lake Michigan-Huron 3D Explorer
Maps show Lake Michigan and Lake Huron as two separate Great Lakes, split by Michigan's Lower Peninsula. This browser explorer shows why hydrologists treat them as one lake: both basins sit at the exact same water-surface elevation, connected through the Straits of Mackinac at the northern tip of the peninsula. Toggle between separate lake colors and a single unified color to see the connection, or highlight the shallow strait itself.
Lake Michigan reaches about 281 m at its deepest point and covers about 57,750 sq km. Lake Huron is slightly larger by surface area at about 59,590 sq km but shallower, reaching about 229 m at its deepest point. Combined, the two basins cover about 117,340 sq km of surface area - larger than Lake Superior alone, making Michigan-Huron the largest connected body of fresh water on Earth by surface area, even though Superior remains deeper and holds more total volume. The connecting Straits of Mackinac are only about 5.6 km wide at the narrowest point and about 50 m deep - a shallow doorway compared to either basin.
- Toggle between two named-lake colors and a single unified color to see the same water body two ways
- Toggle the Straits of Mackinac highlight to see the shallow connecting channel
- Read the shared elevation, depth, and area figures in the panel
- Drag to orbit, scroll or pinch to zoom
- Runs fully in the browser with the vendored three.js engine - no account, no upload
| Figure | Published value |
|---|---|
| Shared surface elevation | about 176 m (577 ft) above sea level - identical on both sides |
| Combined surface area | about 117,340 sq km - largest connected fresh water body on Earth by area |
| Lake Michigan area | about 57,750 sq km |
| Lake Michigan max depth | about 281 m; mean depth about 85 m |
| Lake Huron area | about 59,590 sq km |
| Lake Huron max depth | about 229 m; mean depth about 59 m |
| Straits of Mackinac | about 5.6 km wide at the narrowest, only about 50 m deep |
| Location | Upper and Lower Michigan, USA, bordering Ontario, Canada |
For another basin defined by a dramatic depth contrast between connected sections, open the Caspian Sea 3D Explorer, or see the deepest lake on Earth in the Lake Baikal 3D Explorer.
Everything renders on your device with WebGL. The 3D engine loads once (about 0.7 MB) and is cached.
This is an educational approximation - the basin profile, connecting strait, and vertical scale are schematic teaching cues, not survey data.
Frequently Asked Questions
Are Lake Michigan and Lake Huron really the same lake?
Hydrologically, yes. Both basins sit at the exact same water-surface elevation, about 176 m above sea level, and are connected through the Straits of Mackinac - the same water flows freely between them. They carry two separate names by long-standing convention, not because they are separate water bodies.
How wide and deep are the Straits of Mackinac?
The connecting strait is about 5.6 km wide at its narrowest point and only about 50 m deep - far shallower than either main basin, which is why it reads as a narrow doorway rather than a third deep basin in this explorer.
Which is bigger, Lake Michigan or Lake Huron?
By surface area, Lake Huron is slightly larger at about 59,590 sq km versus Michigan's about 57,750 sq km. By depth, Michigan is deeper, reaching about 281 m versus Huron's about 229 m.
Is Lake Michigan-Huron the largest lake in the world?
Combined, the two basins cover about 117,340 sq km, making them the largest connected fresh water body on Earth by surface area - larger than Lake Superior. Superior is still deeper and holds more total water volume, so it remains the largest Great Lake by volume.
What separates the two lakes on a map?
Michigan's Lower Peninsula sits between them as dry land for most of their length, narrowing to nothing at the northern tip where the Straits of Mackinac open the connection.
Is this a scientific terrain model?
No. It is an educational explorer using published figures - the basin profile, connecting strait, and vertical scale are schematic teaching cues, not survey data.