Union Township, Day County, SD Elevation & Topographic Map

Topographic elevation map of Union Township, Day County, South Dakota, shaded from 1,450 ft on the northwest side to 1,820 ft on the southeast side
Elevation
1,820 ft 555 m1,730 ft 525 m1,680 ft 515 m1,590 ft 485 m1,500 ft 455 m1,450 ft 445 m
Contours every 200 ft, bold every 1,000 ft
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.
Township area
Fades everything outside the official township boundaries (US Census).

Elevation Data

Union Township, Day County sits at about 1,660 ft (505 m) above sea level, worked out from 2020 Census block heights on USGS 3DEP, weighted by residents.

Typical elevation
1,660 ft 505 m
most residents: 1,530–1,730 ft
Lowest
1,450 ft 445 m
on the northwest side
Highest
1,820 ft 555 m
on the southeast side
Average
1,600 ft 490 m
all land inside township boundaries

Union Township, Day County spans about 370 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
1,660 ft505 m
Highest point
Inside township boundaries, on the southeast side
1,820 ft555 m
Lowest point
Inside township boundaries, on the northwest side
1,450 ft445 m
Average of all land1,600 ft490 m

Elevation profile, west to east

6.0 mi west to east through the middle of Union Township, Day County.

Topographic Map

Topographic elevation map of Union Township, Day County, South Dakota, shaded from 1,450 ft on the northwest side to 1,820 ft on the southeast side
Township boundaries (dashed) over shaded terrain, with contours every 20 ft (6 m).
Location
Township in Day County, South Dakota, United States
Population
73 2024 est.
Land area
35.6 sq mi + 0.1 sq mi water
Density
2.1 per sq mi
Coordinates
45.4498° N, 97.7863° W
Time zone
Central UTC−6 / −5
Landform region
Central Lowland
Drains to
James River → Missouri River → Mississippi River → Gulf of America
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Sources: U.S. Census Bureau, USGS

Nearby Places

Nearby towns by typical elevation

  1. Independence Township, Day County1,800 ft
  2. Kidder Township1,800 ft
  3. Lynn Township, Day County1,790 ft
  4. Bristol1,780 ft
  5. Bristol Township1,770 ft
  6. Union Township, Day County1,660 ft
  7. Homer Township1,520 ft
  8. Pierpont1,510 ft
  9. Andover1,480 ft
  10. Andover Township1,450 ft
  11. Farmington Township, Day County1,330 ft

Rankings by typical elevation

How we measure
  • Typical elevation: the population-weighted median: every 2020 Census block inside the township boundaries, 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 township boundaries (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).
  • 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); BTS time zones. All public domain.