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Table 2

List of inferred parameters for calibration

ParametersNotationRange of valuesData source
Manning's roughness (impervious area) Ni 0.011–0.017 Rossman (2010)  
Manning's roughness (pervious area) NP 0.15–0.8 Rossman (2010)  
Manning's roughness (conduits) Nc 0.011–0.04 Rossman (2010)  
% Imperviousness I 60–85 Calculated from Google maps and land use maps (Rossman 2010; Google Earth 2016) 
Curve number CN 60–75 Vandersypen et al. (1972)  
Drying time of soil (in days) dry 4–13 Calculated as per Rossman (2010)  
Catchment slope (%) S 0.01–3 Calculated from DEM and contour map 
Catchment width (m) W 100–1,500 Calculated as per Rossman (2010)  
Depression storage (impervious area) (mm) Di 1.5–3 ASCE (1993) 
Depression storage (pervious area) (mm) DP 2.5–5.5 ASCE (1993) 
ParametersNotationRange of valuesData source
Manning's roughness (impervious area) Ni 0.011–0.017 Rossman (2010)  
Manning's roughness (pervious area) NP 0.15–0.8 Rossman (2010)  
Manning's roughness (conduits) Nc 0.011–0.04 Rossman (2010)  
% Imperviousness I 60–85 Calculated from Google maps and land use maps (Rossman 2010; Google Earth 2016) 
Curve number CN 60–75 Vandersypen et al. (1972)  
Drying time of soil (in days) dry 4–13 Calculated as per Rossman (2010)  
Catchment slope (%) S 0.01–3 Calculated from DEM and contour map 
Catchment width (m) W 100–1,500 Calculated as per Rossman (2010)  
Depression storage (impervious area) (mm) Di 1.5–3 ASCE (1993) 
Depression storage (pervious area) (mm) DP 2.5–5.5 ASCE (1993) 
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