Evaluation of Waterlogging Risk in an Urban Subway Station

Table 5

Grading criteria for evaluation indexes.

Grade	Terrain	River course	Rainwater facility	Feed-water pipe	Groundwater	Regional importance
I	0.95	0.1	0.05	0.03	0.90	0.85
II	0.75	0.2	0.20	0.15	0.70	0.70
III	0.55	0.40	0.35	0.23	0.77	0.55
IV	0.35	0.55	0.50	0.35	0.45	0.45
V	0.2	0.70	0.65	0.45	0.3	0.3