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Swales: TTT

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|Manning's Roughness||Lower numbers indicate less surface obstruction and result in faster flow. <br>
Suggested range for [[Turf: List|mown grass]] (dependent on density) 0.03 – 0.06 <ref name = SWMM> Oregon State Univ., Corvallis. Dept. of Civil, Construction and Environmental Engineering.; Environmental Protection Agency, Cincinnati ONRMRL. Storm Water Management Model Reference Manual Volume I Hydrology (Revised). 2016:233. Accessed August 23, 2017.</ref>
|Upstream Invert (m)||Depth of swale invert above node invert at inlet end of the swale

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