Dimensionless Assessment Method of Landslide Dam Formation Caused by Tributary Debris Flow Events

Table 3

Parameters of the main stream and dimensionless indices for 11 tributary debris flow events.

No.	Name	Discharge of the main stream at the downstream gauging station; (m^3/s)	Upstream watershed area at the downstream gauging station; (10^4 m^2)	Discharge; (m^3/s)	Mean velocity; (m/s)	Mean depth; (m)	Angle of confluence; (°)	Angle of deflection; (°)	Revised width; (m)				Classification
1	Namasha landslide dam	9308	75077	2628	11.1	5.92	90	47	59	10.27	—	3.70	Type 1
2	Yi River landslide dam	9308	75077	2977	10.8	6.14	80	34	63	11.27	—	1.30	Type 1
3	Putunpunas landslide dam	12106	87492	7180	11.1	8.09	90	67	207	6.45	—	1.46	Type 1
4	Heshe River landslide dam	5426	44814	998	7.5	1.67	60	26	141	2.68	—	5.63	Type 1
5	Koushe River landslide dam	8657	62330	722	6.4	1.88	85	3.4	61	9.36	—	14.26	Type 1
6	Houjue River landslide dam	7001	16100	481	6.3	2.19	90	64	80	1.68	—	1.05	Type 1
7	Namasha DF008	9308	75077	3445	12.2	3.78	65	63	1778	0.44	8.99	—	Type 3
8	Taoyaun DF001	12106	87492	7639	14.0	9.10	90	83	460	1.38	—	0.23	Type 2
9	Taoyaun DF006	12106	87492	5505	13.6	8.12	80	75	614	0.36	1.02	—	Type 3
10	Liugui DF009	12106	87492	11630	14.2	10.25	90	85	917	0.40	0.16	—	Type 4
11	Liugui DF014	12106	87492	10955	7.4	4.96	90	80	1663	0.99	—	0.16	Type 4