Roe River
The Roe River is a short river in Montana, USA, flowing from Giant Springs to the Missouri River.
Also known as: Roe River Montana
How big is it?
61 m · commonly cited river length
Also 200.1 ft
Commonly cited river length · approximate
Typical recorded range: 55 m to 65 m.
A little perspective
Roe River vs Tower Bridge: length comparison
The commonly cited river length of the Roe River is approximately equal to the central span between tower centres of Tower Bridge.
The Roe River is a short river in Montana, USA, flowing from Giant Springs to the Missouri River.
Tower Bridge is a combined bascule and suspension bridge crossing the River Thames in central London.
Both rulers start at the same zero and share one linear scale. Artwork keeps its original proportions.
Measurements, assumptions & sources +
Roe River
Commonly cited river length: 61 m; approximate; range 55 m–65 m.
Montana’s Roe River is commonly cited as approximately 61 m long from Giant Springs to the Missouri River. Shortest-river claims depend strongly on naming, channels, season and measurement convention.
Montana Fish, Wildlife & Parks — Giant Springs State Park
The marked commonly cited river length is calibrated. Unmeasured illustration details are representative.
Tower Bridge
Central span between tower centres: 61 m; specified; range 60 m–62 m.
The selected measurement is Tower Bridge’s approximately 61 m central bascule span between its two main towers, not the full bridge and approaches.
The marked central span between tower centres is calibrated. Unmeasured illustration details are representative.
Use the visual comparison to explore its scale, then check the measurements and sources.
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Why this measurement?
Why we use 61 m
We compare the commonly cited river length of the Roe River. This is an estimate; check the notes for its rounding and uncertainty. The recorded range is 55 m to 65 m.
Montana’s Roe River is commonly cited as approximately 61 m long from Giant Springs to the Missouri River. Shortest-river claims depend strongly on naming, channels, season and measurement convention.
The marked horizontal span follows the measured feature, not the edges of the image. How calibrated comparisons work →
Recorded properties
Dimensions and measurements
| Property | Selected value | Recorded range | Basis |
|---|---|---|---|
| 61 m | 55 m to 65 m | approximate |
Around this scale
Explore nearby values.
Compare examples with lower, similar and higher values. Each card names the measurement being compared.
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Around the same scaleBuildings and structuresTower Bridge61 mCentral span between tower centresTower Bridge is a combined bascule and suspension bridge crossing the River Thames in central London.
Nearest higher valueVehicles and transportConcorde62.1 mOverall lengthConcorde was a supersonic passenger airliner developed by British and French manufacturers that could travel faster than the speed of sound.Sources and method
Want to check the number?
The source records and measurement method remain available for inspection.
- Montana Fish, Wildlife & Parks — Giant Springs State ParkRoe River location and commonly cited short surface course at Giant Springs.
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