Table 6. Metric scores and impairment ratings for Big Dry Creek 

 based on a comparison with Little Dry Creek, following 

 Protocol II and Table 12 in Bahls (1993) . Underlined 

 values indicate full support of aquatic life uses, 

 minor impairment, and good biological integrity; bold 

 values indicate partial support of aquatic life uses, 

 moderate impairment, and fair biological integrity; all 

 other values indicate full support of aquatic life 

 uses, no impairment, and excellent biological 

 integrity. 



Metric Metric Score (%) 



Shannon Diversity Index 80.91 



Pollution Index 77 . 61 



Siltation Index 53 .32 



Similarity Index 36.86 



