South Flannigan Township, IL Elevation & Topographic Map
Elevation
630 ft 190 m570 ft 175 m540 ft 165 m490 ft 150 m430 ft 130 m400 ft 120 m
Contours every 100 ft, bold every 500 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.
- Township area
- Fades everything outside the official township boundaries (US Census).
Elevation Data
South Flannigan Township sits at about 520 ft (160 m) above sea level, worked out from 2020 Census block heights on USGS 3DEP, weighted by residents.
Typical elevation
520 ft 160 m
most residents: 450–570 ft
Lowest
400 ft 120 m
on the east side
Highest
630 ft 190 m
on the southeast side
Average
490 ft 150 m
all land inside township boundaries
South Flannigan Township spans about 230 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 Where people live: half of residents higher, half lower | 520 ft160 m |
| Highest point Inside township boundaries, on the southeast side | 630 ft190 m |
| Lowest point Inside township boundaries, on the east side | 400 ft120 m |
| Average of all land | 490 ft150 m |
Elevation profile, west to east
6.0 mi west to east through the middle of South Flannigan Township.
Topographic Map
- Location
- Township in Hamilton County, Illinois, United States
- Population
- 138 2024 est.
- Land area
- 18.3 sq mi
- Density
- 7.5 per sq mi
- Coordinates
- 37.9215° N, 88.6749° W
- Time zone
- Central UTC−6 / −5
- Landform region
- Central Lowland
- Drains to
- Middle Fork Saline River → Ohio River → Mississippi River → Gulf of America
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Sources: U.S. Census Bureau, USGS
Nearby Places
Nearby towns by typical elevation
- Flannigan Township530 ft
- South Flannigan Township520 ft
- Thompsonville490 ft
- Cave Township480 ft
- Eastern Township470 ft
- Tate Township460 ft
- Long Branch Township430 ft
- South Twigg Township430 ft
- Galatia Township420 ft
- Galatia420 ft
- Twigg Township420 ft
Rankings by typical elevation
- Towns in Illinois2,367th highest of 2,872
- Towns in Hamilton County2nd highest of 17
Peaks and hills nearest, by height
- Radio Hill560 ft
- Bunker Hill, Hamilton County560 ft
- Webbs Hill500 ft
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.