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

Table 8

Monthly discharge estimation using SCS curve number method of Kunur River Basin.

Days (Sep., 2000)	Rainfall* (mm) or 𝑃	𝑆 (mm)	𝑄 (mm)	% of rainfall	𝑇𝑐	𝑇𝑝	Discharge in m^3/s (𝑞𝑝)
1	16	86.71	0.02	0.125	165.98	116.18	0.03
2	5		2.04	40.8			3.37
3	0		4.33				7.15
4	0		4.33				7.15
5	0		4.33				7.15
6	6		1.71	28.5			2.82
7	0		4.33				7.15
8	0		4.33				7.15
9	47		7.56	16.09			12.48
10	3		2.84	94.67			4.69
11	0		4.33				7.15
12	0		4.33				7.15
13	0		4.33				7.15
14	9		0.89	9.89			1.47
15	5		2.04	40.8			3.37
16	0		4.33				7.15
17	0		4.33				7.15
18	52		9.9	19.04			16.35
19	160		88.73	55.46			146.53
20	136		68.56	50.41			113.22
21	44		6.27	14.25			10.35
22	30		1.61	5.37			2.66
23	0		4.33				7.15
24	0		4.33				7.15
25	0		4.33				7.15
26	0		4.33				7.15
27	0		4.33				7.15
28	0		4.33				7.15
29	0		4.33				7.15
30	0		4.33				7.15

∗Rainfall data computed by River Research Institute, Kolkata, in 2000.