II. AsslRnmenl of 4-l.iss 



I'o^l n I s •*'iL^^' H?. Jll^ Habitat Value Cl ass 



1^ or more 1 



10 to less tli.in 15 2 



5 to loss than 10 3 



.3 to less th;in 5 U 



Greater than zero to less than .1 5 



6 



Important tributaries for trout recruitment are advanced one class but not 

 higher than class 1. 



NOTE: If no fish are present stre.ini riMch is automatically in class 6; 

 exception. If no fish present but stream has local coninunity Importance 

 (standard IX above) class 3 Is asslf^ned. 



B. Procedure for Crltt-rion 2 - Sport Fis hery Po tential of Stream Reach 

 I. Productivity - Aw.tid of Points .ind Assignment of Grade 



a. Points for productivity of all trout species comblnedi-' 



Blomass (Kr) per 300 m Points 



70 and over 



12 to less than 70 



5 to less than 12 



Greater than to less than 5 



If trout present but blomass is unknown: 



Each species with abundance A,B,C or 11-' Is assigned 1 



Each species with abundance U,V, or 7. is assigned .5 



b. Points for productivity of class A non- trout game and sport flshi' 

 Abundan ce Ratlnfii^ Points 



A 



B 

 C 

 D 



1^ V and 7. 



Note: Maximum for mountain whitefiah is 2 points. 



Assignment of productivity grade 



Points (sum of points from a and b above) 



9 and over 



6 to less than 9 



3 to less than 6 



Greater than 1 to less than 3 



1 or less 



Grade 



4 

 3 

 2 

 1 

 



II. Assignment of Ingress Grade 



Ingress ratinn 



1 

 2 

 3 

 4 

 5 

 6 and 7 



■II 



Grade 



4 

 3 

 3 

 2 

 1 

 



II For species designations see list of Montana fishes in Appendix. 

 21 See explanation of ratings In Appendix. 



