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Table 1

Manning's n roughness values associated with different land covers for the low, medium, and high ranges (from Moore (2011))

Land coverManning's n (low)Manning's n (medium)Manning's n (high)
Water 0.025 0.030 0.033 
Developed (open space) 0.010 0.013 0.016 
Developed (low intensity) 0.038 0.050 0.063 
Developed (medium intensity) 0.056 0.075 0.094 
Developed (high intensity) 0.075 0.100 0.125 
Barren land 0.025 0.030 0.035 
Deciduous forest 0.100 0.120 0.160 
Evergreen forest 0.100 0.120 0.160 
Mixed forest 0.100 0.120 0.160 
Shrub 0.035 0.050 0.070 
Grass/herbaceous 0.025 0.030 0.035 
Pasture/hay 0.030 0.040 0.050 
Cultivated crops 0.025 0.035 0.045 
Woody wetlands 0.880 0.100 0.120 
Emergent herbaceous wetlands 0.075 0.100 0.150 
Land coverManning's n (low)Manning's n (medium)Manning's n (high)
Water 0.025 0.030 0.033 
Developed (open space) 0.010 0.013 0.016 
Developed (low intensity) 0.038 0.050 0.063 
Developed (medium intensity) 0.056 0.075 0.094 
Developed (high intensity) 0.075 0.100 0.125 
Barren land 0.025 0.030 0.035 
Deciduous forest 0.100 0.120 0.160 
Evergreen forest 0.100 0.120 0.160 
Mixed forest 0.100 0.120 0.160 
Shrub 0.035 0.050 0.070 
Grass/herbaceous 0.025 0.030 0.035 
Pasture/hay 0.030 0.040 0.050 
Cultivated crops 0.025 0.035 0.045 
Woody wetlands 0.880 0.100 0.120 
Emergent herbaceous wetlands 0.075 0.100 0.150 
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