Parabolic Gutter Cross Section
![](GUID-F50182C300054DDEBAE343647A611526-low.png)
Parabolic Gutter Cross Section
Where:
H= Gutter Height
B = Gutter Width
a = linear term coefficient dervied with equation: a = 2H/B
b = quadratic term coefficient derived with equation: b=H/B2
See Hydraulic Engineering Circular No. 22, Third Edition Urban Drainage Design Manual (2009) for more details.