Big Mound Township, IL Elevation & Topographic Map
Elevation
510 ft 155 m470 ft 145 m460 ft 140 m420 ft 130 m380 ft 115 m370 ft 110 m
Contours every 200 ft, bold every 1,000 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
Big Mound Township sits at about 450 ft (135 m) above sea level, worked out from 2020 Census block heights on USGS 3DEP, weighted by residents.
Typical elevation
450 ft 135 m
most residents: 410–480 ft
Lowest
370 ft 110 m
on the south side
Highest
510 ft 155 m
on the west side
Average
400 ft 125 m
all land inside township boundaries
Big Mound Township spans about 140 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 | 450 ft135 m |
| Highest point Inside township boundaries, on the west side | 510 ft155 m |
| Lowest point Inside township boundaries, on the south side | 370 ft110 m |
| Airport (FWC) FAA airport elevation, the highest point of its runways | 434 ft132 m |
| Average of all land | 400 ft125 m |
Elevation profile, south to north
8.9 mi south to north through the middle of Big Mound Township.
Topographic Map
- Location
- Township in Wayne County, Illinois, United States
- Population
- 1,722 2024 est.
- Land area
- 51.7 sq mi + 0.2 sq mi water
- Density
- 33 per sq mi
- Coordinates
- 38.3703° N, 88.3857° W
- Time zone
- Central UTC−6 / −5
- Landform region
- Central Lowland
- Drains to
- Skillet Fork → Little Wabash River → Ohio River → Mississippi River → Gulf of America
- Airport
- Fairfield Municipal (FWC) 434 ft
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Sources: U.S. Census Bureau, USGS, FAA
Nearby Places
Nearby towns by typical elevation
- Barnhill Township460 ft
- Jasper Township450 ft
- Lamard Township450 ft
- Jeffersonville450 ft
- Big Mound Township450 ft
- Fairfield450 ft
- Grover Township440 ft
- Sims420 ft
- Arrington Township420 ft
- Mill Shoals Township410 ft
- Mill Shoals410 ft
Rankings by typical elevation
- Towns in Illinois2,640th highest of 2,872
- Towns in Wayne County14th highest of 29
Peaks and hills nearest, by height
- Lowry Hill590 ft
- Boyd Hill580 ft
- Radio Hill560 ft
- Linder Hill430 ft
- Turkey Ridge400 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).
- 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, 360 ft at 38.2563° N, 88.3818° 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); FAA airport data; BTS time zones. All public domain.