HydroCAD Velocity Factors (Kv)
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            Copyright (c) 2004 HydroCAD Software Solutions LLC

// This data was compiled from TR-55 Appendix F and NEH-4 Figure 15.2

units=fps

data= 20.3  Paved
data= 16.1  Unpaved
data= 15.0  Grassed Waterway
data= 10.0  Nearly Bare & Untilled
data=  9.0  Cultivated Straight Rows
data=  7.0  Short Grass Pasture
data=  5.0  Woodland
data=  2.5  Forest w/Heavy Litter