Allison Township, SD Elevation & Topographic Map

Elevation

1,510 ft 460 m1,470 ft 450 m1,450 ft 445 m1,420 ft 430 m1,380 ft 420 m1,360 ft 415 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

Allison Township sits at about 1,460 ft (445 m) above sea level, the median height of all land inside township boundaries (too few residents to weight by).

Typical elevation (all land)

1,460 ft 445 m

few residents

Lowest

1,360 ft 415 m

on the southeast side

Highest

1,510 ft 460 m

on the northwest side

Average

1,450 ft 445 m

all land inside township boundaries

Allison Township spans about 150 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	1,460 ft445 m
Highest point Inside township boundaries, on the northwest side	1,510 ft460 m
Lowest point Inside township boundaries, on the southeast side	1,360 ft415 m
Average of all land	1,450 ft445 m

Elevation profile, west to east

6.0 mi west to east through the middle of Allison Township.

Topographic Map

Location: Township in Brown County, South Dakota, United States
Population: 27 2024 est.
Land area: 35.9 sq mi
Density: 0.8 per sq mi
Coordinates: 45.7938° N, 98.6425° 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

Wachter Township1,540 ft
Carl Township1,510 ft
Grassland Colony1,480 ft
Palmyra Township1,480 ft
Allison Township1,460 ft
Franklyn Township1,450 ft
Osceola Township, Brown County1,430 ft
Frederick Township1,390 ft
Oneota Township1,390 ft
Frederick1,380 ft
Westport Township1,360 ft

Rankings by typical elevation

Towns in South Dakota904th highest of 1,383
Towns in Brown County2nd highest of 60

Peaks and hills nearest, by height

Crows Nest (historical)1,470 ft

How we measure

Typical elevation: the median height of all land inside the township boundaries; 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 township boundaries (TIGER, Jan 1 2026).
Pits: the lowest point is the lowest ground outside closed hollows (quarry floors, mine pits, terrain-model artifacts): any hollow under 0.4 sq mi (1 km²), and any hollow under 2 sq mi (5 km²) whose floor is more than 100 ft (30 m) below its rim; and outside patches below sea level of under 0.4 sq mi (1 km²). The single lowest 3DEP cell, 1,360 ft at 45.7751° N, 98.6026° W, is in such a hollow or patch and is not counted.
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.