Research Article
GIS-Enabled Culvert Design: A Case Study in Tuscaloosa, Alabama
Table 3
Quality assurance and control results for three culvert drainage basins.
| | Culvert ID | | Slope (m/m) | Flow length (m) | (min) | , 10-year event (mm/hr) | Area (km2) | Qhand calc (m3/s) | QGIS,auto (m3/s) | Percent difference (%) |
| | 1 | 0.30 | 0.03 | 1506 | 21.75 | 0.105 | 0.684 | 5.918 | 6.172 | 4.29 | | 2 | 0.32 | 0.05 | 747 | 9.91 | 0.159 | 0.215 | 3.003 | 2.837 | −5.53 | | 3 | 0.33 | 0.03 | 750 | 16.99 | 0.129 | 0.251 | 2.932 | 2.946 | 0.46 | | | | | | | | | | Average % difference | 3.4 |
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