ABSTRACT 



An inventory of the aquatic resources of the Mount Haggin Wildlife 

 Management Area was conducted during the summer of 1980. The inventory 

 consisted of 1) a water quality study, 2) a fisheries survey and, 3) a 

 water availability and instream flow recommendation study. Work was con- 

 centrated on 13 major streams. 



The Mount Haggin streams generally exhibited good water quality and 

 were classified into two basic types on the basis of chemical enrichment 

 and stream origin. Some potential water quality problems were identified 

 and included sediment, mercury, lead and arsenic. 



The studied streams were found to contain high populations of "pan- 

 sized" trout. Estimated populations in stream study sections ranged from 

 160 to 740 trout per 1,000 feet. Catchable sized fish comprised 9 to 63% 

 of the populations. Brook trout were the most numerous and widely distributed 

 gamefish at Mount Haggin. Other gamefish collected included rainbow trout, 

 cutthroat trout, rainbow X cutthroat hybrid trout, mountain whitefish and 

 burbot. Non-game species present included mottled sculpin, longnose sucker 

 and longnose dace. 



The wetted perimeter method of determining instream flows was applied 

 to eleven Mount Haggin streams. A minimum flow recommendation for the pre- 

 servation of fish and wildlife habitat was made for each stream for the low 

 flow period. Minimum flow recommendations were made for two other Mount 

 Haggin streams under a different project. 



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