Alden Township, IL Elevation & Topographic Map
Elevation
1,190 ft 360 m1,120 ft 340 m1,090 ft 330 m1,020 ft 310 m950 ft 290 m920 ft 280 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
Alden Township sits at about 1,000 ft (305 m) above sea level, worked out from 2020 Census block heights on USGS 3DEP, weighted by residents.
Typical elevation
1,000 ft 305 m
most residents: 940–1,080 ft
Lowest
920 ft 280 m
on the east side
Highest
1,190 ft 360 m
on the northwest side
Average
1,010 ft 305 m
all land inside township boundaries
Alden Township spans about 270 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 | 1,000 ft305 m |
| Highest point Inside township boundaries, on the northwest side | 1,190 ft360 m |
| Lowest point Inside township boundaries, on the east side | 920 ft280 m |
| Town center USGS map point for Alden Township | 1,010 ft305 m |
| Average of all land | 1,010 ft305 m |
Elevation profile, west to east
6.0 mi west to east through the town center.
Topographic Map
- Location
- Township in McHenry County, Illinois, United States
- Population
- 1,267 2024 est.
- Land area
- 33.2 sq mi + 0.1 sq mi water
- Density
- 38 per sq mi
- Coordinates
- 42.4589° N, 88.5179° W
- Time zone
- Central UTC−6 / −5
- Landform region
- Central Lowland
- Drains to
- Kishwaukee River → Rock River → Mississippi River → Gulf of America
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Sources: U.S. Census Bureau, USGS
Nearby Places
Nearby towns by typical elevation
- Alden Township1,000 ft
- Walworth, WI1,000 ft
- Alden990 ft
- Big Foot Prairie950 ft
- Big Foot Prairie, WI950 ft
- Linn, WI950 ft
- Hartland Township940 ft
- Hebron930 ft
- Harvard930 ft
- Hebron Township920 ft
- Lawrence900 ft
Rankings by typical elevation
- Towns in Illinois7th highest of 2,872
- Towns in McHenry Countyhighest of 57
Peaks and hills nearest, by height
- Gander Mountain957 ft
- Hill Fifteen910 ft
- Camelback Kame870 ft
- Bald Knob, McHenry County790 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; NOAA NGS survey heights. All public domain.