Table 5, Diversity indices for each one-square-foot sample collected at Pop's Place and 

 Flesher during 1971, 1972 and 1975. 



Live Caged Fish 



Results of this test are shown in Table 6. More detailed data are given in Appendix E. 



The data show that the tailings pollution caused mortality in caged fish. Excluding those trout 

 which escaped, the percent mortality which occurred in each cage was as follows: 



Cage #1 (Flesher road) 7/9 = 78% 



Cage #2 (Pop's Place) 10/10 = 100% 



Cage #3 (Below Pass Cr.) 7/10 = 70% 



Cage #4 (Shoue Gulch) 0/6 = 0% 



The specific cause of mortality (suspended sediment, metals, etc.) was not determined. 

 Fish Populations 



The electrofishing done on July 1 1, 1975 at the Flesher station produced 27 cutthroat trout 

 averaging 4.9 inches long and 22 brook trout averaging 5.0 inches long. Thirty-eight (38) slimy 

 sculpin between 1.5-4.6 inches in length were also captured in the 900-foot section. The data 

 show that the dam failure did not completely eliminate the existing fish populations. 



13 



