Chehalis

Chehalis

Predicted v. Observed Hazards
phi = 45°, B.D. = 2.0, Cohesion = 0, T = 65 m²/day
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	8	5	13		26.5		0.3023	0.1890	0.4913
0-50	109	30	139		375.9		0.2899	0.0798	0.3697
50-100	106	35	141		776.8		0.1365	0.0451	0.1815
100-200	116	28	144		1750.1		0.0663	0.0160	0.0823
200-400	56	21	77		1981.8		0.0283	0.0106	0.0389
>400	17	5	22		1029.9		0.0165	0.0049	0.0214
Stable	58	35	93		12227.2		0.0047	0.0029	0.0076
Total	470	159	629		18168.2		0.0259	0.0088	0.0346

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	0.02	0.03	0.02		0.001
0-50	0.23	0.19	0.22		0.021
50-100	0.23	0.22	0.22		0.043
100-200	0.25	0.18	0.23		0.096
200-400	0.12	0.13	0.12		0.109
>400	0.04	0.03	0.03		0.057
Stable	0.12	0.22	0.15		0.673
Total	0.75	0.25	1.00		1.000

Based on files:

celqust45c Tue May 13 17:11:44 1997
polqust45c Tue May 13 17:11:44 1997

Cell area (in hectares) is 0.090000

Table created by patrept Version 1.14