grassedww.str
This file contains the grassed waterway parameters.
Last updated
This file contains the grassed waterway parameters.
Last updated
Grassed waterways are vegetated channels that transport runoff from a field. Vegetation within the waterways reduces flow velocities and protects the waterway from the scouring potential of concentrated flow. Grassed waterways are generally broad and shallow channels; the channel simulated in SWAT+ has a side slope of 8:1. Grassed waterways trap sediment and other contaminants by reducing flow velocities, which increases deposition of particulate contaminates.
Name of the grassed waterway record
string
n/a
n/a
flag_grww
Currently not used
integer
Manning's n for grassed waterway
real
n/a
0.001-0.50
Sediment transport coefficient
real
n/a
0.0-1.0
Depth of grassed waterway
real
m
0.0-10.0
Width of grassed waterway
real
m
0.0-1000.0
Length of grassed waterway
real
km
0.0-10000.0
Slope of grassed waterway
real
m/m
0.0-1.0