Estimation of Peak Flood Discharge for an Ungauged River: A Case Study of the Kunur River, West Bengal

Table 3

The required parameters for measurement flow velocity from kinematic wave parameter and discharge.

Rain intensity (cm/h); (𝑖𝑟)	Drainage basin area (km^2); (𝐴)	Slope of main river in drainage basin outlet (%) (𝑆Ω)	Manning's roughness coefficient (𝑛)	Mean flow width in outlet of drainage basin (m) (𝐵)	Flow velocity (m/s); (𝑉Ω); 𝑉Ω=0.665𝛼Ω^0.6(𝑖𝑟𝐴)^0.4; 𝛼Ω=𝑆Ω^0.5/𝑛𝐵^2/3	Cross-section area (CSA) = 𝑤⋅𝑑 (m^2)	Discharge; (𝑄=𝑤⋅𝑑⋅𝑣) m^3/s
0.0024	922.40	0.19	0.035	56.3	0.75	272.10	204.08