Gem, KS Elevation & Topographic Map
Elevation
3,110 ft 950 m3,100 ft 945 m3,100 ft 945 m3,090 ft 940 m3,080 ft 940 m3,080 ft 940 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.
- City area
- Fades everything outside the official city limits (US Census).
Elevation Data
Gem sits at about 3,090 ft (940 m) above sea level, worked out from 2020 Census block heights on USGS 3DEP, weighted by residents.
Typical elevation
3,090 ft 940 m
most residents: 3,080–3,090 ft
Lowest
3,080 ft 940 m
on the east side
Highest
3,100 ft 945 m
on the southwest side
Average
3,090 ft 940 m
all land inside city limits
Gem is nearly flat: its ground varies by only about 20 ft, so the figures below sit close together.
| Figure | Elevation |
|---|---|
| Typical Where people live: half of residents higher, half lower | 3,090 ft940 m |
| Highest point Inside city limits, on the southwest side | 3,100 ft945 m |
| Lowest point Inside city limits, on the east side | 3,080 ft940 m |
| Town center USGS map point for Gem | 3,090 ft945 m |
| Airport (CBK) FAA airport elevation, the highest point of its runways, 7.5 mi west of the city limits | 3,188 ft972 m |
| Average of all land | 3,090 ft940 m |
Altitude Effects
What 3,090 ft means day to day, worked out from the typical elevation.
Water boils at
206.3 °F96.8 °C
vs 212 °F at sea level; USDA: food takes longer to cook.
Air pressure
89% of sea level
26.7 inHg (90.5 kPa): each breath holds 11% less air.
Oxygen equivalent
18.7% at sea level
Air is still 21% oxygen, just thinner. Normal at the coast: 20.9%.
Sunburn
+6% more UV
EPA: UV rises about 2% for every 1,000 ft.
Topographic Map
- Location
- City in Thomas County, Kansas, United States
- Population
- 95 2024 est.
- Land area
- 0.3 sq mi
- Density
- 284 per sq mi
- Coordinates
- 39.4278° N, 100.8977° W
- Time zone
- Central UTC−6 / −5
- Landform region
- Great Plains
- Drains to
- North Fork Solomon River → Solomon River → Smoky Hill River → Kansas River → Missouri River → Mississippi River → Gulf of America
- Airport
- Shalz Field (CBK) 3,188 ft
- ZIP codes 1
- 67734
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Sources: U.S. Census Bureau, USGS, FAA
Nearby Places
Nearby towns by typical elevation
- Colby3,160 ft
- Morgan Township3,160 ft
- Rovohl Township3,110 ft
- Gem3,090 ft
- Lacey Township3,080 ft
- North Randall Township3,070 ft
- Wendell Township2,990 ft
- Smith Township2,960 ft
- Rexford2,950 ft
- Menlo Township2,950 ft
- Menlo2,950 ft
Rankings by typical elevation
- Towns in Kansas70th highest of 1,996
- Towns in Thomas County11th highest of 19
How we measure
- Typical elevation: the population-weighted median: every 2020 Census block inside the city limits, 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 city limits (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.
- Sources: USGS 3DEP, GNIS, Watershed Boundary Dataset and physiographic provinces; U.S. Census Bureau (boundaries, 2020 blocks, 2024 population estimates, Gazetteer areas, ZIP code areas); FAA airport data; BTS time zones. All public domain.