

^^j^jfjcrj^jfje-jfje' V' ^JfJe'i? i^i^i^i^i^i^iP^iPi^i^ 



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(lOOOn Intarvala) 



mil* ea.a Roach 2 m 



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Figure 43. Total LWD (stems/1000') count for the upper Blackfoot river between the North Fork and 

 Stemple Pass Road.. 



U p per 



IW id d le 



Lower 



Total#stems(>2.5'dia) 444(717%) 115(186%) 60(9.7%) 

 Mean#stems/1,000' 47(683%) 1.2(174%) 098(14.2% 

 Range 0-60 0-26 0- 8 



Table 6. Summary of LWD count for three reaches of the upper Blackfoot River. 



Of 473 total pools, we measured 1 34 pools over the entire survey reach (Table 5). 

 Pool frequency decreased in the downstream direction from 2.7/1000' (upper reach), to 

 1.3/1000' (middle reach), to 0.5/1000' in the lower reach. In the upper reach, 73 of 293 

 pools were measured, of which 68% (N= 50) contained LWD. For the middle reach, 69% 

 (34 of 49) of measured pools contained LWD compared with 42% (5 of 12) pools in the 

 lower reach. For measured pools with LWD, the percent of pool cover formed from 

 wood decreased on the downstream direction from 12% (range 0.5-80) in the upper reach 

 to 10.2% (rangel.0-60) in the middle reach to 3.7% (range 0.5-10) in the lower reach. 



59 



