Chehalis

Chehalis

Predicted v. Observed Hazards
phi = 33°, B.D. = 2.0, Cohesion = 2 kN/m², T = 65 m²
Model Q for Instability	count of landslides				Area within Basin (hectares)		slides per hectare
Model Q for Instability	Road Related	Not Road-Related/ indeterminate	Total		Area within Basin (hectares)		Road Related	Not Road-Related/ indeterminate	Total
Unstable	79	16	95		311.0		0.2540	0.0514	0.3054
0-50	152	48	200		1033.6		0.1471	0.0464	0.1935
50-100	90	29	119		1398.3		0.0644	0.0207	0.0851
100-200	72	26	98		2200.3		0.0327	0.0118	0.0445
200-400	39	13	52		1891.4		0.0206	0.0069	0.0275
>400	5	3	8		890.8		0.0056	0.0034	0.0090
Stable	33	24	57		6436.6		0.0051	0.0037	0.0089
Total	470	159	629		8012.2		0.0587	0.0198	0.0785

normalized by column, and in row of totals
Model Q for Instability	count of landslides				Area within Basin
Model Q for Instability	Road Related	Not Road-Related/ indeterminate	Total		Area within Basin
Unstable	0.17	0.10	0.15		0.039
0-50	0.32	0.30	0.32		0.129
50-100	0.19	0.18	0.19		0.175
100-200	0.15	0.16	0.16		0.275
200-400	0.08	0.08	0.08		0.236
>400	0.01	0.02	0.01		0.111
Stable	0.07	0.15	0.09		0.803
Total	0.75	0.25	1.00		1.000

Based on files:

celqust2c Tue May 13 17:11:54 1997
polqust2c Tue May 13 17:11:54 1997

Cell area (in hectares) is 0.090000

Table created by patrept Version 1.14