Forty Mile Colony, MT Elevation & Topographic Map
Elevation
3,580 ft 1,090 m3,530 ft 1,075 m3,510 ft 1,070 m3,470 ft 1,055 m3,420 ft 1,040 m3,400 ft 1,035 m
Contours every 40 ft, bold every 200 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
Forty Mile Colony sits at about 3,460 ft (1,055 m) above sea level, the median height of all land inside the CDP boundary (too few residents to weight by).
Typical elevation (all land)
3,460 ft 1,055 m
few residents
Lowest
3,400 ft 1,035 m
on the northeast side
Highest
3,580 ft 1,090 m
on the southeast side
Average
3,460 ft 1,055 m
all land inside the CDP boundary
Forty Mile Colony spans about 180 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.
| Figure | Elevation |
|---|---|
| Typical (all land) Median of all land; too few residents to weight by | 3,460 ft1,055 m |
| Highest point Inside the CDP boundary, on the southeast side | 3,580 ft1,090 m |
| Lowest point Inside the CDP boundary, on the northeast side | 3,400 ft1,035 m |
| Average of all land | 3,460 ft1,055 m |
Elevation profile, west to east
0.5 mi west to east through the middle of Forty Mile Colony.
Altitude Effects
What 3,460 ft means day to day, worked out from the typical elevation.
Water boils at
205.6 °F96.4 °C
vs 212 °F at sea level; USDA: food takes longer to cook.
Air pressure
88% of sea level
26.4 inHg (89.3 kPa): each breath holds 12% less air.
Oxygen equivalent
18.5% at sea level
Air is still 21% oxygen, just thinner. Normal at the coast: 20.9%.
Sunburn
+7% more UV
EPA: UV rises about 2% for every 1,000 ft.
Topographic Map
- Location
- Unincorporated community (census-designated place) in Big Horn County, Montana, United States
- Population
- 28 2020 Census
- Land area
- 0.2 sq mi
- Density
- 147 per sq mi
- Coordinates
- 45.2839° N, 107.3588° W
- Time zone
- Mountain UTC−7 / −6
- Landform region
- Great Plains
- Drains to
- Little Bighorn River → Bighorn River → Yellowstone River → Missouri River → Mississippi River → Gulf of America
- ZIP codes 1
- 59050
⤓ Download this map
WebP, 1200 × 900. Free to use: credit “ElevationOf.com” with a link to this page.
Sources: U.S. Census Bureau, USGS
Nearby Places
Nearby towns by typical elevation
- Parkman, WY4,150 ft
- Dayton, WY3,940 ft
- Ranchester, WY3,770 ft
- Wyola3,700 ft
- Forty Mile Colony3,460 ft
- Busby3,440 ft
- Lodge Grass3,370 ft
- Fort Smith3,290 ft
- St. Xavier3,070 ft
- Crow Agency3,060 ft
- Hardin2,910 ft
Rankings by typical elevation
- Towns in Montana257th highest of 497
- Towns in Big Horn County3rd highest of 10
Peaks and hills nearest, by height
- Hunt Mountain10,169 ft
- East Pryor Mountain8,791 ft
- Dry Fork Ridge8,540 ft
- West Pryor Mountain6,690 ft
- Chalk Butte, Big Horn County3,780 ft
How we measure
- Typical elevation: the median height of all land inside the CDP boundary; too few residents live here to weight by people.
- 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.
- Forty Mile Colony 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); BTS time zones; NOAA NGS survey heights. All public domain.