Seneca, SD Elevation & Topographic Map

Elevation

1,930 ft 585 m1,920 ft 585 m1,910 ft 585 m1,900 ft 580 m1,900 ft 580 m1,890 ft 575 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.
Town area: Fades everything outside the official town limits (US Census).

Elevation Data

Seneca sits at about 1,900 ft (580 m) above sea level, the median height of all land inside town limits (too few residents to weight by).

Typical elevation (all land)

1,900 ft 580 m

few residents

Lowest

1,890 ft 575 m

on the east side

Highest

1,910 ft 585 m

on the south side

Average

1,900 ft 580 m

all land inside town limits

Seneca is nearly flat: its ground varies by only about 20 ft, so the figures below sit close together.

Figure	Elevation
Typical (all land) Median of all land; too few residents to weight by	1,900 ft580 m
Highest point Inside town limits, on the south side	1,910 ft585 m
Lowest point Inside town limits, on the east side	1,890 ft575 m
Town center USGS map point for Seneca	1,910 ft580 m
Average of all land	1,900 ft580 m

Location: Town in Faulk County, South Dakota, United States
Population: 23 2024 est.
Land area: 0.4 sq mi
Density: 55 per sq mi
Coordinates: 45.0616° N, 99.5121° W
Time zone: Central UTC−6 / −5
Landform region: Great Plains
Drains to: James River → Missouri River → Mississippi River → Gulf of America
ZIP codes 1: 57473

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Sources: U.S. Census Bureau, USGS

How we measure

Typical elevation: the median height of all land inside the town limits; 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 town 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).
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); BTS time zones. All public domain.