Big Rock Township, IL Elevation & Topographic Map
Elevation
780 ft 240 m740 ft 225 m730 ft 220 m690 ft 210 m660 ft 200 m640 ft 195 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 Rock Township sits at about 700 ft (215 m) above sea level, worked out from 2020 Census block heights on USGS 3DEP, weighted by residents.
Typical elevation
700 ft 215 m
most residents: 690–740 ft
Lowest
640 ft 195 m
on the southeast side
Highest
780 ft 240 m
on the northwest side
Average
710 ft 220 m
all land inside township boundaries
Big Rock 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 | 700 ft215 m |
| Highest point Inside township boundaries, on the northwest side | 780 ft240 m |
| Lowest point Inside township boundaries, on the southeast side | 640 ft195 m |
| Town center USGS map point for Big Rock Township | 710 ft215 m |
| Airport (ARR) FAA airport elevation, the highest point of its runways, 0.7 mi east of the township boundaries | 712 ft217 m |
| Average of all land | 710 ft220 m |
Elevation profile, south to north
6.0 mi south to north through the town center.
Topographic Map
- Location
- Township in Kane County, Illinois, United States
- Population
- 1,748 2024 est.
- Land area
- 35.1 sq mi
- Density
- 50 per sq mi
- Coordinates
- 41.7639° N, 88.5470° W
- Time zone
- Central UTC−6 / −5
- Landform region
- Central Lowland
- Drains to
- Fox River → Illinois River → Mississippi River → Gulf of America
- Airport
- Aurora Municipal (ARR) 712 ft
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Sources: U.S. Census Bureau, USGS, FAA
Nearby Places
Nearby towns by typical elevation
- Kaneville Township790 ft
- Kaneville780 ft
- Squaw Grove Township750 ft
- Hinckley740 ft
- Sugar Grove710 ft
- Prestbury710 ft
- Big Rock Township700 ft
- Big Rock700 ft
- Sugar Grove Township690 ft
- Little Rock Township650 ft
- Plano650 ft
Rankings by typical elevation
- Towns in Illinois839th highest of 2,872
- Towns in Kane County36th highest of 40
Peaks and hills nearest, by height
- Johnsons Mound890 ft
- Waubonsie Hill710 ft
- Maramech Hill650 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); FAA airport data; BTS time zones. All public domain.