Table 9 Flood conditioning factors and variable classes.

Factor	Classification	Number of floods	Flood ratio (%)	Partition area (km²)	Partition ratio (%)	Flood disaster density (1000 km²)
DEM^a (m)	4–180	118	64.48	7358.43	44.84	16.04
	180–438	32	17.49	2601.04	15.85	12.30
	438–714	24	13.11	3461.97	21.10	6.93
	714–1068	8	4.37	2321.99	14.15	3.45
	1068–2298	1	0.55	666.57	4.06	1.50
Slope^a (degree)	0–6.22	91	49.73	7059.37	43.02	12.89
	6.22–15.11	46	25.14	3074.03	18.73	14.96
	12.11–24.59	20	10.93	2787.24	16.98	7.18
	24.69–34.96	17	9.29	2390.47	14.57	7.11
	34.96–75.56	9	4.92	1098.89	6.70	8.19
LULC^a	Cultivated land	10	5.46	3625.63	22.09	2.76
	Forest land	53	28.96	7516.65	45.81	7.05
	Grassland	9	4.92	1287.47	7.85	6.99
	Water area	3	1.64	439.54	2.68	6.83
	Town	108	59.02	3524.72	21.48	30.64
	Unused	0	0.00	15.98	0.10	0.00
Soil^a	Brown soil	3	1.64	1400.73	8.54	2.14
	Cinnamon	96	52.46	9701.69	59.12	9.90
	Newly accumulated soil	0	0.00	14.00	0.09	0.00
	Aeolian soil	0	0.00	14.97	0.09	0.00
	Rocky soil	0	0.00	63.39	0.39	0.00
	Coarse bone soil	6	3.28	1026.68	6.26	5.84
	Black soil	0	0.00	49.87	0.30	0.00
	Moutain meadow soil	0	0.00	12.08	0.07	0.00
	Tidal soil	42	22.95	3739.37	22.79	11.23
	Paddy soil	3	1.64	53.28	0.32	56.30
	Town	31	16.94	184.72	1.13	167.82
	Water	2	1.09	149.24	0.91	13.40
Rainfall^a (ml)	534.52–563.61	16	8.74	1481.51	9.03	10.80
	563.61–574.65	51	27.87	4438.95	27.05	11.49
	574.65–583.86	114	62.30	7645.86	46.59	14.91
	583.86–594.54	2	1.09	2058.94	12.55	0.97
	594.54–628.42	0	0.00	784.73	4.78	0.00
Distance to rivers (M)	0–5187.96	36	19.67	4667.34	28.44	7.71
	5187.96–10,894.73	53	28.96	4533.97	27.63	11.69
	10,894.73–17,120.29	46	25.14	3778.35	23.02	12.17
	17,120.29–24,729.31	48	26.23	2421.99	14.76	19.82
	24,729.31–44,097.72	0	0.00	1008.35	6.14	0.00

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