The Effect of Timber Management on Stream Water Quality 



0.6 



0.5 



cvj 0.4 H 



E 



o> 



=L 0.3 



0.2 



0.1 



Chlorophyll oc 



oJ^ 



NO to LOW ACTIVITY 

 MODERATE ACTIVmC 

 HIGH ACTIVfTY 



r 0.6 



- 0.5 



0.4 



0.3 



0.2 



0.1 



^0 



I.Oi 



0.001 -♦ 



NO to LOW ACTIVITY 

 MODERATE ACTIVFTY 

 HIGH ACTIVITY 



1.0 



rO.1 



rO.OI 



♦- 0.001 



Figure C- 2. Summer maximum Chlorophyll a and ash-free-dry-mass (AFDM) at each of 



ten paired watershed sites. Site pairs appear as directly comparable sites with different 



levels of timber management activity in the watershed. 



Page 48 



Flathead Basin Cooperative Program Final Report 



