Hoover Dam
Hoover Dam is a concrete barrier on the Colorado River that controls water flow and generates hydroelectric power.
How big is it?
221.4 m tall
Also 726.4 ft
Height · rounded landmark reference
A little perspective
About 1.15 times the overall height of Gateway Arch.
Gateway Arch: The Gateway Arch is a stainless steel monument in St Louis, Missouri, commemorating the westward expansion of the United States.
Measurements, assumptions & sources +
Hoover Dam
A rounded 221.4 m structural-height anchor; water level changes.
Defined examples — our methodology
The marked height is calibrated. Unmeasured illustration details are representative.
Gateway Arch
The Gateway Arch rises approximately 192 m (630 ft) from ground to apex. Its width is also about 630 ft, but this entity defaults to height.
US National Park Service — Gateway Arch facts
The marked overall height is calibrated. Unmeasured illustration details are representative.
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Why this measurement?
Why we use 221.4 m
For comparison, this page uses height. This is labelled rounded landmark reference: an explicit comparison model rather than a claim that every example has the same value.
A rounded 221.4 m structural-height anchor; water level changes.
The marked vertical span follows the named feature; transparent margins and unmeasured details do not alter it. How calibrated comparisons work →
Recorded properties
Hoover Dam dimensions and measurements
| Property | Selected value | Recorded range | Basis |
|---|---|---|---|
| 221.4 m | Not recorded | rounded landmark reference |
Around this scale
Go smaller. Go bigger.
These links use compatible length records, ordered around the selected value.
Nearest lower value · Built worldGateway Arch192 mThe Gateway Arch is a stainless steel monument in St Louis, Missouri, commemorating the westward expansion of the United States.
Around the same scale · Built worldEiffel Tower330 mThe Eiffel Tower is a wrought-iron lattice structure in Paris, France, and a famous global landmark.
Nearest higher value · Built worldGolden Gate Bridge tower227 mThe Golden Gate Bridge tower is one of the two main vertical supports for the suspension bridge in San Francisco.Sources and method
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More ways to see it
Curated comparisons
There’s always another scale
Follow your curiosity.
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