Flow Accumulation (upslope area)
Flow accumulation algorithm that routes through flats
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*** Note that this file is outdated. Please find TopoToolbox, a Matlab suite of functions for topographic analysis at
https://topotoolbox.wordpress.com/ . wflowacc will be removed from the File Exchange in the future. ****
How much water flows where? Use this algorithm to calculate the upslope area of each cell in a digital elevation model.
Algorithm specifications:
- multiple flow direction
- single flow direction
- routes across flats
- calculates deterministic, randomized and random flow
- allows you to specify a weighting exponent that governs the relation flow direction - slope
- handles edge effects
Cite As
Wolfgang Schwanghart (2026). Flow Accumulation (upslope area) (https://www.mathworks.com/matlabcentral/fileexchange/14504-flow-accumulation-upslope-area), MATLAB Central File Exchange. Retrieved .
Acknowledgements
Inspired: How to estimate subglacial water routes, Strahler Stream Order
General Information
- Version 1.3.0.0 (107 KB)
MATLAB Release Compatibility
- Compatible with any release
Platform Compatibility
- Windows
- macOS
- Linux
| Version | Published | Release Notes | Action |
|---|---|---|---|
| 1.3.0.0 | update of the description |
||
| 1.2.0.0 | an option was added to control flow behavior at grid edges |
||
| 1.1.0.0 | included single flowdirection and the exponent for flow direction weighting to address the problems encountered by Liam. |
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| 1.0.0.0 |
