Clay County, TN Elevation & Topographic Map
Elevation
1,410 ft 430 m1,190 ft 360 m1,070 ft 325 m840 ft 255 m620 ft 190 m500 ft 155 m
Contours every 500 ft, bold every 2,500 ft
USGS 3DEP · U.S. Census Bureau
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
Clay County averages about 820 ft (250 m) above sea level across all its land. Its ground runs from 500 ft on the southwest side to 1,410 ft on Pilot Knob.
Average elevation
820 ft 250 m
all land inside the county
Highest
1,410 ft 430 m
on Pilot Knob
Lowest
500 ft 155 m
on the southwest side
Clay County spans about 910 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.
| Figure | Elevation |
|---|---|
| Average of all land | 820 ft250 m |
| Highest point Inside the county, on Pilot Knob (3DEP terrain model; no NGS survey height) | 1,410 ft430 m |
| Lowest point Inside the county, on the southwest side | 500 ft155 m |
Elevation profile, south to north
14 mi south to north through Celina.
Topographic Map
- Location
- County in Tennessee, United States
- Population
- 7,857 2024 est.
- Land area
- 236.5 sq mi + 22.8 sq mi water
- Density
- 33 per sq mi
- Time zone
- Central UTC−6 / −5
- Landform region
- Interior Low Plateaus
- Drains to
- Gulf of America
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Sources: U.S. Census Bureau, USGS
Nearby Places
Neighboring counties sharing a border, by average
- Overton County1,210 ft
- Pickett County1,090 ft
- Clinton County, KY1,000 ft
- Macon County860 ft
- Monroe County, KY840 ft
- Clay County820 ft
- Jackson County790 ft
- Cumberland County, KY770 ft
Rankings by average elevation
- Counties in Tennessee52nd highest of 92
- Counties in the United States1,763rd highest of 3,151
Peaks and hills highest inside
- Pilot Knob, Clay County1,410 ft
- Little Knob1,310 ft
- Chowning Knob1,280 ft
- Brays Knob1,130 ft
- Grogan Hill1,110 ft
The one town in Clay County
- Celina550 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; 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; coastal ground within 3 ft (1 m) of named tidal water counts as sea level.
- 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.