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

Table 2

Estimation of bankfull discharge during flood of the Kunur River at the outlet using manning equation.

Site	Cross-section line	Hydraulic radius 𝑅 (m)	Slope-m/m (𝑆)	Manning roughness coefficient (𝑛)	Manning equation (𝑣 m/s)	Cross-section area (CSA) = 𝑤⋅𝑑 (m^2)	Discharge; (𝑄=𝑤⋅𝑑⋅𝑣) m^3/s
At outlet of Kunur River	𝐴𝐵	4.31	0.01	0.035	0.88	272.1	239.44