Ottawa County, OH Elevation & Topographic Map

Topographic elevation map of Ottawa County, Ohio, shaded from 560 ft on the southwest side to 710 ft on the southeast side
Elevation
710 ft 215 m670 ft 205 m650 ft 200 m610 ft 185 m580 ft 175 m560 ft 170 m
Contours every 500 ft, bold every 2,500 ft
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

Ottawa County averages about 590 ft (180 m) above sea level across all its land. Its ground runs from 560 ft on the southwest side to 710 ft on the southeast side.

Average elevation
590 ft 180 m
all land inside the county
Highest
710 ft 215 m
on the southeast side
Lowest
560 ft 170 m
on the southwest side

Ottawa County spans about 150 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 land590 ft180 m
Highest point
Inside the county, on the southeast side
710 ft215 m
Lowest point
Inside the county, on the southwest side
560 ft170 m

Elevation profile, west to east

39 mi west to east through Port Clinton.

Topographic Map

Topographic elevation map of Ottawa County, Ohio, shaded from 560 ft on the southwest side to 710 ft on the southeast side
County boundary (dashed) over shaded terrain, with contours every 20 ft (6 m).
Location
County in Ohio, United States
Population
39,692 2024 est.
Land area
254.7 sq mi + 330.4 sq mi water
Density
156 per sq mi
Time zone
Eastern UTC−5 / −4
Landform region
Central Lowland 96%
Drains to
Great Lakes
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Sources: U.S. Census Bureau, USGS

Nearby Places

Neighboring counties sharing a border, by average

  1. Wood County670 ft
  2. Erie County670 ft
  3. Sandusky County650 ft
  4. Lucas County640 ft
  5. Ottawa County590 ft

Rankings by average elevation

  • Counties in Ohiolowest of 88
  • Counties in the United States2,222nd highest of 3,151
All 23 towns in Ottawa County by typical elevation
  1. Genoa620 ft
  2. Clay Township, Ottawa County620 ft
  3. Lakeside620 ft
  4. Elmore620 ft
  5. Harris Township610 ft
  6. Clay Center610 ft
  7. Rocky Ridge600 ft
  8. Allen Township600 ft
  9. Curtice600 ft
  10. Williston600 ft
  11. Marblehead590 ft
  12. Benton Township590 ft
  13. Put-in-Bay Township590 ft
  14. Put-in-Bay590 ft
  15. Danbury Township590 ft
  16. Catawba Island Township590 ft
  17. Oak Harbor590 ft
  18. Salem Township, Ottawa County590 ft
  19. Port Clinton580 ft
  20. Carroll Township580 ft
  21. Portage Township, Ottawa County580 ft
  22. Bay Township580 ft
  23. Erie Township570 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 1 arc-second (≈100 ft, 30 m) grid. Land means the boundary minus Census area water.
  • Highest and lowest: the highest land cell. Lowest: the lowest land cell; 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, 410 ft at 41.5726° N, 83.3676° 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.