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the claim

River channel width scales predictably in relation to its contributing drainage area

the verdict
SUPPORTED
the evidence backs this
Recorded sources
4 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that River channel width scales predictably in relation to its contributing drainage area?

Yes. Geomorphological studies consistently show that river channel width scales predictably in relation to its contributing drainage area, typically expressed through power-law relationships.

Verdict: SUPPORTED · 4 sources for, 0 against · Last checked

The analysis

Multiple relevant geomorphology papers (e.g., [3], [4], [5], [8]) discuss and utilize the predictable scaling relationship between channel width and drainage area, supporting the claim without contradictory evidence.

Evidence for · 4
Downstream hydraulic geometry relationships: Gathering reference reach-scale width values from LiDAR
2015
The study relates downstream channel morphology, specifically bankfull widths, to drainage area and flow parameters.
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Sofia, G., Tarolli, P., Cazorzi, F., & Fontana, G. D. (2015). Downstream hydraulic geometry relationships: Gathering reference reach-scale width values from LiDAR. doi.org. https://doi.org/10.1016/J.GEOMORPH.2015.09.002

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More for · 3
Drainage area and the variation of channel geometry downstream
1981
The analysis of downstream channel geometry confirms that channel width scales predictably with discharge and drainage area using power functions.
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Klein, M. (1981). Drainage area and the variation of channel geometry downstream. doi.org. https://doi.org/10.1002/esp.3290060608

Drainage reorganization induces deviations in the scaling between valley width and drainage area
2022
The study examines valley and channel width as a power-law function of drainage area across various basins.
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Harel, E., Goren, L., Crouvi, O., Ginat, H., & Shelef, E. (2022). Drainage reorganization induces deviations in the scaling between valley width and drainage area. doi.org. https://doi.org/10.5194/esurf-10-875-2022

Steady‐State Bedrock Channel Width
2023
The paper confirms the width-drainage area scaling relation in bedrock channels while noting mechanical controls such as sediment flux.
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Li, T., Venditti, J., & Sklar, L. S. (2023). Steady‐State Bedrock Channel Width. doi.org. https://doi.org/10.1029/2023GL105344

What does the evidence say?

Multiple relevant geomorphology papers (e.g., [3], [4], [5], [8]) discuss and utilize the predictable scaling relationship between channel width and drainage area, supporting the claim without contradictory evidence.

Receipt History
first checked05 Aug 2026
judged → SUPPORTED · 8405 Aug 2026
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