Trinity County, CA Elevation & Topographic Map

Topographic elevation map of Trinity County, California, shaded from 330 ft on the southwest side to 9,038 ft on Mount Eddy
Elevation
9,040 ft 2,755 m6,860 ft 2,090 m5,770 ft 1,760 m3,600 ft 1,095 m1,420 ft 435 m330 ft 100 m
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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

Trinity County averages about 3,810 ft (1,160 m) above sea level across all its land. Its ground runs from 330 ft on the southwest side to 9,038 ft on Mount Eddy.

Average elevation
3,810 ft 1,160 m
all land inside the county
Highest
9,038 ft 2,755 m
on Mount Eddy
Lowest
330 ft 100 m
on the southwest side

Trinity County spans about 8,710 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 land3,810 ft1,160 m
Highest point
Inside the county, on Mount Eddy (NGS survey height)
9,038 ft2,755 m
Lowest point
Inside the county, on the southwest side
330 ft100 m

Elevation profile, south to north

83 mi south to north through Weaverville.

Topographic Map

Topographic elevation map of Trinity County, California, shaded from 330 ft on the southwest side to 9,038 ft on Mount Eddy
County boundary (dashed) over shaded terrain, with contours every 1,000 ft (305 m).
Location
County in California, United States
Population
15,642 2024 est.
Land area
3,179.3 sq mi + 28.3 sq mi water
Density
4.9 per sq mi
Time zone
Pacific UTC−8 / −7
Landform region
Pacific Border
Drains to
Pacific Ocean
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Sources: U.S. Census Bureau, USGS

Nearby Places

Neighboring counties sharing a border, by average

  1. Siskiyou County4,260 ft
  2. Trinity County3,810 ft
  3. Shasta County3,060 ft
  4. Tehama County2,150 ft
  5. Mendocino County1,790 ft
  6. Humboldt County1,730 ft

Rankings by average elevation

Peaks and hills highest inside

  • Sawtooth Mountain8,860 ft
  • Gibson Peak8,360 ft
  • North Yolla Bolly Mountains7,868 ft
  • Packers Peak7,834 ft
  • Monument Peak7,720 ft
All 14 towns in Trinity County by typical elevation
  1. Post Mountain3,440 ft
  2. Coffee Creek2,970 ft
  3. Mad River2,910 ft
  4. Ruth2,830 ft
  5. Trinity Center2,440 ft
  6. Hayfork2,430 ft
  7. Weaverville2,170 ft
  8. Douglas City2,150 ft
  9. Burnt Ranch2,100 ft
  10. Lewiston2,010 ft
  11. Junction City1,660 ft
  12. Hyampom1,550 ft
  13. Salyer870 ft
  14. Trinity Village800 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.
  • 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.