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RFI (rec. 5.06.26) 2567 - Appendix B - Site-Based Stormwater Management Plan (SBSMP) (Ver. 2)
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Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc. Monday, Feb 23 2026
Capacity of Swale in Stormwater Reserve
Trapezoidal Highlighted
Bottom Width (m) = 1.0000 Depth (m) = 0.2926
Side Slopes (z:1) = 6.7000, 6.7000 Q (cms) = 0.9000
Total Depth (m) = 0.3000 Area (sqm) = 0.8663
Invert Elev (m) = 1.0000 Velocity (m/s) = 1.0389
Slope (%) = 1.0000 Wetted Perim (m) = 4.9644
N-Value = 0.030 Crit Depth, Yc (m) = 0.2621
Top Width (m) = 4.9209
Calculations EGL (m) = 0.3477
Compute by: Known Q
Known Q (cms) = 0.9000
Elev (m) Depth (m)
Section
1.6000 0.6000
1.4500 0.4500
1.3000 0.3000
1.1500 0.1500
1.0000 0.0000
0.8500 -0.1500
0.7000 -0.3000
0 .6 1.2 1.8 2.4 3 3.6 4.2 4.8 5.4 6 6.6 7.2
Reach (m)
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