Ontonagon County, MI Elevation & Topographic Map

Topographic elevation map of Ontonagon County, Michigan, shaded from 600 ft on the south side to 1,950 ft on Summit Peak
Elevation
1,950 ft 595 m1,620 ft 495 m1,450 ft 440 m1,110 ft 340 m770 ft 235 m600 ft 185 m
Zoom in for contour lines
USGS 3DEP · U.S. Census Bureau
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How to use this mapviews, tools and data
Elevation
Ground colored by height from green (lowest) to white (highest), with contour lines every 40–500 ft (USGS data).
Satellite
A 2016 satellite photo at 33 ft (10 m) detail; contours off.
3D
Tilt and turn the terrain; hills are raised 1.5×, or set ×1 for true height.
Click or tap anywhere
The exact elevation of that spot in ft and m.
Measure
Pick two points for the climb, descent and grade along a straight line.
County area
Fades everything outside the official county boundary (US Census).

Elevation Data

Ontonagon County averages about 1,120 ft (340 m) above sea level across all its land. Its ground runs from 600 ft on the south side to 1,950 ft on Summit Peak.

Average elevation
1,120 ft 340 m
all land inside the county
Highest
1,950 ft 595 m
on Summit Peak
Lowest
600 ft 185 m
on the south side

Ontonagon County spans about 1,350 ft of height, so no single spot tells the whole story. The ruler shows where most of its land lies, and where the other numbers you'll see come from.

FigureElevation
Average of all land1,120 ft340 m
Highest point
Inside the county, on Summit Peak (3DEP terrain model; no NGS survey height)
1,950 ft595 m
Lowest point
Inside the county, on the south side
600 ft185 m

Elevation profile, south to north

88 mi south to north through Ontonagon Township.

Topographic Map

Topographic elevation map of Ontonagon County, Michigan, shaded from 600 ft on the south side to 1,950 ft on Summit Peak
County boundary (dashed) over shaded terrain, with contours every 100 ft (30 m).
Location
County in Michigan, United States
Population
5,824 2024 est.
Land area
1,311.0 sq mi + 2,429.5 sq mi water
Density
4.4 per sq mi
Time zone
Eastern UTC−5 / −4
Landform region
Superior Upland
Drains to
Great Lakes
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Sources: U.S. Census Bureau, USGS

Nearby Places

Neighboring counties sharing a border, by average

  1. Cook County, MN1,620 ft
  2. Iron County1,540 ft
  3. Gogebic County1,470 ft
  4. Ashland County, WI1,230 ft
  5. Ontonagon County1,120 ft
  6. Houghton County1,030 ft
  7. Keweenaw County850 ft

Rankings by average elevation

Peaks and hills highest inside

  • Summit Peak1,950 ft
  • Underwood Hill1,870 ft
  • Government Peak1,850 ft
  • Porcupine Peak1,790 ft
  • Trap Hills1,780 ft
All 20 towns in Ontonagon County by typical elevation
  1. Haight Township1,390 ft
  2. Bergland1,320 ft
  3. Lake Gogebic1,310 ft
  4. Bergland Township1,310 ft
  5. Matchwood Township1,250 ft
  6. Interior Township1,220 ft
  7. Rockland1,180 ft
  8. Rockland Township1,180 ft
  9. Greenland1,160 ft
  10. McMillan Township, Ontonagon County1,150 ft
  11. Ewen1,140 ft
  12. Stannard Township1,140 ft
  13. Bruce Crossing1,130 ft
  14. Bohemia Township1,080 ft
  15. Greenland Township1,060 ft
  16. Mass City1,060 ft
  17. White Pine900 ft
  18. Carp Lake Township, Ontonagon County880 ft
  19. Ontonagon Township640 ft
  20. Ontonagon630 ft
How we measure
  • Average: every USGS 3DEP bare-earth cell of land inside the Census county boundary (TIGER/Line, Jan 1 2026), weighted equally, on a 2 arc-second (≈200 ft, 62 m) grid, coarsened from 1 arc-second so the whole area fits one run. Land means the boundary minus Census area water (on this grid, water areas of at least half a cell).
  • Highest and lowest: the highest land cell, re-read at 1 arc-second around the 25 highest grid cells; it is a named summit, so its height is the peak method: the 3DEP top on a ~7 ft (2 m) window, or the NGS published height when a survey mark sits within 160 ft (50 m) of it. Lowest: the lowest land cell, re-read at 1 arc-second around the 25 lowest grid cells; coastal ground within 3 ft (1 m) of named tidal water counts as sea level.
  • Pits: the lowest point is the lowest ground outside closed hollows (quarry floors, mine pits, terrain-model artifacts): any hollow under 0.4 sq mi (1 km²), and any hollow under 2 sq mi (5 km²) whose floor is more than 100 ft (30 m) below its rim; and outside patches below sea level of under 0.4 sq mi (1 km²). The single lowest 3DEP cell, 600 ft at 46.8399° N, 89.4360° W, is in such a hollow or patch and is not counted.
  • Nearby Places: neighboring counties and rankings use each one's average elevation, on its own grid, the same figure its page shows. Peaks and hills: the highest summits inside the county with at least 980 ft (300 m) of prominence, then the highest federal (GNIS) summits inside it when there are fewer than 5; each is the 3DEP top on a ~7 ft (2 m) window, or the NGS published height when a usable survey mark sits within 160 ft (50 m) of it (shown as published).
  • Towns: each town's typical elevation (population-weighted median of its own 2020 blocks at 1 arc-second); a town is listed when any of its 2020 residents live in the county.
  • Rounding: computed heights are rounded to 10 ft (5 m), or to 1 ft (1 m) under 100 ft; 3DEP is good to about a meter, not a foot. Published figures (NGS survey heights) are shown as their publisher gives them.
  • Datum: North American Vertical Datum of 1988 (NAVD 88). NGS plans to replace NAVD 88 with a new datum (NAPGD2022); heights will then shift slightly.
  • Sources: USGS 3DEP, GNIS, Watershed Boundary Dataset and physiographic provinces; U.S. Census Bureau (TIGER boundaries and water, 2020 blocks, 2024 population estimates, county adjacency); NOAA NGS survey heights; BTS time zones. All public domain.