Contents 



Figure 1-5: Timber Harvest Activity in the Howard 



Creek Watershed 121 

 Table I- 1 : "Risk" Calculations for Howard Creek, 



Lolo National Forest, Montana 123 



J. Linear Correlation/Regression Analysis of Forestry Models, 

 Risk Assessment, and Water Quality and Fisheries Data 

 (Sirucek, Hill, Hauer, Fraley, Weaver, Potts, and Tralles) 



Table J-1: List of study sites by watetrshed and the application of 



water yield increase and/or sediment yield models (H^OY and WATSED), 

 the Sequoia risk analysis, and the study sites that were investigated 

 in the water quality module (C), the fisheries module (D), and the 



Water Quality Bureau's qualitative research assessment module (E) 129 



Figure J- 1 : Watershed Study Sites 130 

 Table J-2: Independent and dependent variables applied to 



the linear correlation/regression analysis 131 

 Table J-3: Statistically significant regressions of independent 



and dependent variables 132 



Figure J-2: Sequoia CRA to Transformed McNeil Results 134 



Figure J-3: Sequoia CRA to Substrate Score Transformed 134 



Figure J-4: Sequoia CRA to Mean TPN 134 



Figure J-5: Sequoia CRA to Max Chlorophyll a 134 



Figure J-6: H^OY WYl % to Transformed McNeil Core Value 135 



Figure J-7: H^OY WYl % to Transformed Substrate Score 135 



Figure J-8: H,OY WYl % to Mean TPN 135 



Figure J-9: H,OY WYl % to Max Chlorophyll a 135 



Figure J- 10: WATSED Annual WYl % to Mean TPN 135 



Figure J- 1 1 : H,OY WYl % (75% Peak Duration) to Mean TPN 135 



Figure J-12: WATSED Annual WYl % to Max ChlorophyU a 136 



Figure J-13: H,OY WYl % (75% Peak Duration) to Max Chlorophyll a 136 



Figure J-14: % of Basin Harvested to Mean TP 136 



Figure J- 1 5 : % of Basin Harvested to Mean TPN 1 36 



Figure J- 16: % of Basin Harvested to Max Chlorophyll a 136 



Figure J-17: H,OY WYl % to Channel Stability Rating 136 



Figure J- 18: Sequoia CRA to Channel Stability Rating 137 

 Figure J- 19: WATSED Annual WYl % to Change in 



Channel Stability Rating 137 

 Figure J-20: WATSED WYl % (75% Peak Duration) to 



Change in Channel Stability Rating 137 



Figure J-21 : WATSED Predicted Sediment to Suspended Sediment 137 



Page vi Flathead Basin Cooperative Program Final Report 



