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QFAT01 Flow Estimator

Plugin ID: 4724

Estimate open-channel flow and WSL from DEM cross-sections, design-channel shapes, and manual/custom XS profiles.

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This plugin has an experimental version available!

- Estimate Q or WSL using Manning's equation from DEM, design-channel, or manual/custom XS inputs.
- Sample DEM cross-sections from a user-drawn line and report A, P, R, velocity and freeboard.
- Use SI and US units for common hydraulic inputs, outputs and profile checks.
- Use rectangular, trapezoidal, V-shape, half-circular, Manual XS and saved custom XS profiles.
- Support optional local Manning's n values and bank extension above the defined profile.
- Plot profile, WSL, wetted area, wetted perimeter, crest and freeboard checks.
- Copy or export visible profile/plot values for quick QA and reporting.

This tool is part of QFAT (QGIS Flood Analysis Toolkit) — a set of focused QGIS utilities designed to support flood modelling workflows (e.g., TUFLOW, HEC-RAS), hydraulic QA, and rapid engineering checks.

Version QGIS >= QGIS <= Date
0.5.82 3.34.0 3.99.0 44 fge2025 2026-05-27T03:17:59.164384+00:00
0.5.7 3.34.0 3.99.0 105 fge2025 2026-05-03T02:15:15.531375+00:00
0.4.15 3.34.0 3.99.0 212 fge2025 2026-02-13T05:08:10.708440+00:00

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