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Table 3

Manning's n value for each landuse type in the landuse map (Sigstad 2018)

ClassDescriptionManning's
Built area Rough asphalt 0.016 
Agriculture Mature field crops 0.040 
Forest Heavy stand of timber, few down trees, little undergrowth, flow below branches 0.100 
Open area Cleared land with tree stumps, no sprouts 0.040 
Bog Very weedy reaches, deep pools or floodways with a heavy stand of timber and underbrush 0.100 
Water Clean, winding, some pools, and shoals 0.040 
ClassDescriptionManning's
Built area Rough asphalt 0.016 
Agriculture Mature field crops 0.040 
Forest Heavy stand of timber, few down trees, little undergrowth, flow below branches 0.100 
Open area Cleared land with tree stumps, no sprouts 0.040 
Bog Very weedy reaches, deep pools or floodways with a heavy stand of timber and underbrush 0.100 
Water Clean, winding, some pools, and shoals 0.040 
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