Herlong, CA Elevation & Topographic Map

Topographic elevation map of Herlong, California, shaded from 4,040 ft on the northwest side to 4,160 ft on the south side
Elevation
4,160 ft 1,270 m4,130 ft 1,260 m4,110 ft 1,255 m4,080 ft 1,245 m4,050 ft 1,235 m4,040 ft 1,230 m
Contours every 100 ft, bold every 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.
Area
Fades everything outside the official CDP boundary (US Census).

Elevation Data

Herlong sits at about 4,130 ft (1,260 m) above sea level, worked out from 2020 Census block heights on USGS 3DEP, weighted by residents.

Typical elevation
4,130 ft 1,260 m
most residents: 4,130–4,140 ft
Lowest
4,040 ft 1,230 m
on the northwest side
Highest
4,160 ft 1,270 m
on the south side
Average
4,110 ft 1,255 m
all land inside the CDP boundary

Herlong spans about 120 ft of height, so no single spot tells the whole story. The ruler shows where its people live, and where the other numbers you'll see come from.

FigureElevation
Typical
Where people live: half of residents higher, half lower
4,130 ft1,260 m
Highest point
Inside the CDP boundary, on the south side
4,160 ft1,270 m
Lowest point
Inside the CDP boundary, on the northwest side
4,040 ft1,230 m
Town center
USGS map point for Herlong
4,110 ft1,255 m
Airport (H37)
FAA airport elevation, the highest point of its runways, 1.5 mi west of the CDP boundary
4,062 ft1,238 m
Average of all land4,110 ft1,255 m

Elevation profile, south to north

0.9 mi south to north through the town center.

Altitude Effects

What 4,130 ft means day to day, worked out from the typical elevation.

Water boils at
204.3 °F95.7 °C

vs 212 °F at sea level; USDA: food takes longer to cook.

Air pressure
86% of sea level

25.7 inHg (87.1 kPa): each breath holds 14% less air.

Oxygen equivalent
18.0% at sea level

Air is still 21% oxygen, just thinner. Normal at the coast: 20.9%.

Sunburn
+8% more UV

EPA: UV rises about 2% for every 1,000 ft.

Topographic Map

Topographic elevation map of Herlong, California, shaded from 4,040 ft on the northwest side to 4,160 ft on the south side
CDP boundary (dashed) over shaded terrain, with contours every 10 ft (3 m).
Location
Unincorporated community (census-designated place) in Lassen County, California, United States
Population
237 2020 Census
Land area
1.7 sq mi
Density
142 per sq mi
Coordinates
40.1435° N, 120.1347° W
Time zone
Pacific UTC−8 / −7
Landform region
Basin and Range
Drains to
Honey Lake basin (does not reach the sea)
Airport
Herlong (H37) 4,062 ft
ZIP codes 1
96113
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Sources: U.S. Census Bureau, USGS, FAA

Nearby Places

How we measure
  • Typical elevation: the population-weighted median: every 2020 Census block inside the CDP boundary, at its USGS 3DEP height, weighted by the people who live there. Half of residents live higher, half lower.
  • Lowest, highest, average: USGS 3DEP bare-earth heights on a 1 arc-second (≈100 ft, 30 m) grid, land only, inside the Census CDP boundary (TIGER, Jan 1 2026).
  • Nearby Places: nearby towns and rankings use each town's typical elevation, so every town is compared like for like. Rankings count every city, town, township and census-designated place, including places inside a town. Peaks and hills: the nearest summits with at least 980 ft (300 m) of prominence within 62 mi (100 km), then federal (GNIS) summits within 16 mi (25 km) 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).
  • Altitude effects: standard-atmosphere formulas applied to the typical elevation; UV from EPA's rule of thumb (about 2% per 1,000 ft).
  • 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 (FAA airport elevation, 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.
  • Herlong is an unincorporated community; figures cover the census-designated place, a statistical area.
  • Sources: USGS 3DEP, GNIS, Watershed Boundary Dataset and physiographic provinces; U.S. Census Bureau (boundaries, 2020 blocks, Gazetteer areas, ZIP code areas); FAA airport data; BTS time zones; NOAA NGS survey heights. All public domain.