Contents 



Figures and Tables 



Introduction 



Figure 1 : Linkages of study modules in Flathead Basin Study 8 



B. Evaluation of Historical Sediment Deposition Related to Land Use 

 through Analysis of Lake Sediments (Spencer) 



Figure B-1: Mean sediment accumulation rates in Whitefish Lake over the 

 last 125 years, and timber harvest activity over the time period 

 (since 1929) when harvest records could be assembled. 22 



Figure B-2: Mean sediment accumulation rates in Swan Lake over the 

 last 125 years, and timber harvest activity over the time period 

 (since 1948) when harvest records could be assembled 30 



Figure B-2: Mean sediment accumulation rates in Lake McDonald 



over the last 135 years 33 



C. The Effect of Timber Management on Stream Water 

 Quality (Hauer and Blum) 



Table C-1: Wilcoxson's signed-rank comparison of 



mean total suspended solids (TSS), three forms of nitrogen (NH,, NO,^, 



and total perslfate nitrogen — TPN), and two forms of phosphorus 



(soluble reactive phosphorus — SRP and total phosphorus — TP) 



between no to low activity watershed sites paired to 



moderate to high activity watershed sites 45 



Figure C- 1 : Annual maximum total phosphotur (TP) and total persulfate 



nitrogen (TPN) at each of ten paired watershed sites. 46 



Figure C-2: Summer maximum Chlorophyll a and ash-free-dry-masss 



(AFDM) at each of ten paired watershed sites. 48 



Figure C-3: Autumn taxa richness and Simpson's index of riffle habitat 



macroinvertebrates at each of ten paired watershed sites 49 



D. Fisheries Habitat and Fish Populations (Weaver and Fraley) 



Table D-1 : List of study streams showing activities scheduled 



for each stream included as part of the Flathead Basin Commission 

 Cooperative Forest Practice, Water Quality, and Fisheries Study 54 



Figure D- 1 : Watershed Study Sites 55 



Figure D-2: Relationship between numbers of westslope cutthroat trout 

 fry successfully emerging from replicates of six gravel mixtures 

 and the percentage of material smaller than 6.35 mm in each mixture 57 



Flathead Basin Cooperative Program Final Report Pageiii 



