Day County, SD Elevation & Topographic Map

Topographic elevation map of Day County, South Dakota, shaded from 1,300 ft on the northwest side to 2,040 ft on the northeast side
Elevation
2,040 ft 620 m1,850 ft 565 m1,760 ft 535 m1,580 ft 480 m1,390 ft 425 m1,300 ft 395 m
Contours every 500 ft, bold every 2,500 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.
County area
Fades everything outside the official county boundary (US Census).

Elevation Data

Day County averages about 1,740 ft (530 m) above sea level across all its land. Its ground runs from 1,300 ft on the northwest side to 2,040 ft on the northeast side.

Average elevation
1,740 ft 530 m
all land inside the county
Highest
2,040 ft 620 m
on the northeast side
Lowest
1,300 ft 395 m
on the northwest side

Day County spans about 740 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 land1,740 ft530 m
Highest point
Inside the county, on the northeast side
2,040 ft620 m
Lowest point
Inside the county, on the northwest side
1,300 ft395 m

Elevation profile, west to east

37 mi west to east through Webster.

Topographic Map

Topographic elevation map of Day County, South Dakota, shaded from 1,300 ft on the northwest side to 2,040 ft on the northeast side
County boundary (dashed) over shaded terrain, with contours every 40 ft (12 m).
Location
County in South Dakota, United States
Population
5,408 2024 est.
Land area
1,028.5 sq mi + 62.6 sq mi water
Density
5.3 per sq mi
Time zone
Central UTC−6 / −5
Landform region
Central Lowland
Drains to
Gulf of America 58%, Bitter Lake basin (does not reach the sea) 21%
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Sources: U.S. Census Bureau, USGS

Nearby Places

Neighboring counties sharing a border, by average

  1. Codington County1,820 ft
  2. Day County1,740 ft
  3. Clark County1,720 ft
  4. Marshall County1,550 ft
  5. Grant County1,450 ft
  6. Brown County1,340 ft
  7. Roberts County1,330 ft
  8. Spink County1,320 ft

Rankings by average elevation

All 37 towns in Day County by typical elevation
  1. Enemy Swim1,890 ft
  2. Waubay Township1,890 ft
  3. Kosciusko Township1,880 ft
  4. Roslyn1,870 ft
  5. Highland Township, Day County1,860 ft
  6. Webster1,850 ft
  7. Grenville1,840 ft
  8. Egeland Township1,830 ft
  9. Webster Township1,830 ft
  10. Nutley Township1,830 ft
  11. Raritan Township1,830 ft
  12. Rusk Township1,820 ft
  13. Waubay1,820 ft
  14. York Township1,820 ft
  15. Wheatland Township1,820 ft
  16. Morton Township1,820 ft
  17. Butler1,820 ft
  18. Liberty Township, Day County1,810 ft
  19. Racine Township1,810 ft
  20. Central Point Township1,810 ft
  21. Grenville Township1,810 ft
  22. Independence Township, Day County1,800 ft
  23. Butler Township, Day County1,800 ft
  24. Kidder Township1,800 ft
  25. Lynn Township, Day County1,790 ft
  26. Bristol1,780 ft
  27. Troy Township, Day County1,780 ft
  28. Bristol Township1,770 ft
  29. Valley Township, Day County1,760 ft
  30. Oak Gulch Township1,750 ft
  31. Union Township, Day County1,660 ft
  32. Scotland Township1,640 ft
  33. Homer Township1,520 ft
  34. Pierpont1,510 ft
  35. Andover1,480 ft
  36. Andover Township1,450 ft
  37. Farmington Township, Day County1,330 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 1 arc-second (≈100 ft, 30 m) grid. Land means the boundary minus Census area water.
  • Highest and lowest: the highest land cell. Lowest: the lowest land cell; 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.