Table of Contents

Introduction
Statistical Methods
Results and Discussion
Figure 1 Annual summary of total iron in the Columbia River at Birchbank, 1983-1997.
Figure 2 Annual summary of total phosphorus in the Columbia River at Birchbank, 1983-1997.
Figure 3 Time series plot of total phosphorus data in the Columbia River at Birchbank, 1983-1997.
Figure 4 Time series plot of total aluminum data in the Columbia River at Birchbank, 1990-1997.
Figure 5 Time series plot of total iron data in the Columbia River at Birchbank, 1983-1997.
Columbia River at Waneta
Figure 6 Annual summary of total phosphorus data from the Columbia River at Waneta, 1984-1995.
Figure 7 Annual summary of fecal coliform data from the Columbia River at Waneta, 1987-1996.
Figure 8 Time series plot of dissolved fluoride data from the Columbia River at Waneta, 1984-1995.
Figure 9 Time series plot of dissolved sulphate data from the Columbia River at Waneta, 1984-1995.
Figure 10 Time series plot of total phosphorus data from in the Columbia River at Waneta, 1984-1995.
Figure 11 Time series plot of total dissolved phosphorus data from the Columbia River at Waneta, 1987-1996.
Figure 12 Time series plot of ortho-phosphorus data from the Columbia River at Waneta, 1987-1995.
Figure 13 Time series plot of total cadmium data from the Columbia River at Waneta, 1991-1995.
Figure 14 Time series plot of total chromium data from the Columbia River at Waneta, 1991-1995.
Figure 15 Time series plot of total iron data from the Columbia River at Waneta, 1984-1995.
Figure 16 Time series plot of total manganese data from the Columbia River at Waneta, 1987-1995.
Figure 17 Time series plot of total lead data from the Columbia River at Waneta, 1991-1995.
Figure 18 Time series plot of total zinc data from the Columbia River at Waneta, 1991-1995.
Figure 19 Time series plot of fecal coliform data from the Columbia River at Waneta, 1987-1996.
Elk River at Highway 93 Bridge
Figure 20 Annual summary of total arsenic data from the Elk River at Highway 93, 1987-1996.
Figure 21 Time series plot of nitrate/nitrite data from the Elk River at Highway 93, 1987-1994.
Figure 22 Time series plot of total dissolved nitrogen data from the Elk River at Highway 93, 1987-1994.
Figure 23 Time series plot of total arsenic data from the Elk River at Highway 93, 1987-1996.
Figure 24 Time series plot of total selenium data from the Elk River at Highway 93, 1987-1996.
Fraser River at Hope
Figure 25 Time series plot of AOX data from the Fraser River at Hope, 1991-1995.
Figure 26 Time series plot of dissolved chloride data from the Fraser River at Hope, 1985-1996.
Fraser River at Marguerite
Figure 27 Annual summary of ortho-phosphorus from the Fraser River at Marguerite, 1988-1995.
Figure 28 Annual summary of fecal coliform from the Fraser River at Marguerite, 1988-1996.
Figure 29 Time series plot of AOX data from the Fraser River at Marguerite, 1991-1995.
Figure 30 Time series plot of dissolved chloride data from the Fraser River at Marguerite, 1986-1996.
Figure 31 Time series plot of total dissolved phosphorus data from the Fraser River at Marguerite, 1988-1995.
Figure 32 Time series plot of ortho-phosphorus data from the Fraser River at Marguerite, 1988-1995.
Figure 33 Time series plot of fecal coliform data from the Fraser River at Marguerite, 1988-1996.
Fraser River at Stoner
Figure 34 Time series plot of AOX data from the Fraser River at Stoner, 1991-1994.
Kootenay River at Canal Flats
Figure 35 Time series plot of specific conductivity data from the Kootenay River at Canal Flats, 1986-1996.
Kootenay River at Creston
Figure 36 Time series plot of total phosphorus data from the Kootenay River at Creston, 1985-1996.
Kootenay River at Fenwick Station
Figure 37 Time series plot of total zinc data from the Kootenay River at Fenwick Station, 1991-1996.
Quinsam River near the Mouth
Figure 38 Annual summary of hardness data from the Quinsam River, 1986-1994.
Figure 39 Annual summary of dissolved calcium data from the Quinsam River, 1986-1994.
Figure 40 Annual summary of dissolved magnesium data from the Quinsam River, 1986-1994.
Figure 41 Time series plot of specific conductivity data from the Quinsam River, 1986-1994.
Figure 42 Time series plot of hardness data from the Quinsam River, 1986-1994.
Figure 43 Time series plot of dissolved calcium data from the Quinsam River, 1986-1994.
Figure 44. Time series plot of dissolved magnesium data from the Quinsam River, 1986-1994.
Figure 45. Time series plot of dissolved sodium data from the Quinsam River, 1986-1994.
Figure 46. Time series plot of dissolved sulphate data from the Quinsam River, 1986-1994.
Figure 47 Time series plot of total strontium data from the Quinsam River, 1990-1994.
Salmon River near Hyder, Alaska
Figure 48 Time series plot of total cyanide data from the Salmon River near Hyder, Alaska, 1989-1996.
Similkameen River near the US border
Figure 49 Time series plot of total arsenic data from the Similkameen River near the US border, 1984-1996.
Figure 50 Time series plot of fecal coliform data from the Similkameen River near the US border, 1984-1996.
South Thompson River at Kamloops
Figure 51 Time series plot of total phosphorus data from the South Thompson River at Kamloops, 1987-1995.
Thompson River at Spences Bridge
Figure 52 Annual summary of total phosphorus from the Thompson River at Spences Bridge, 1986-1996.
Figure 53 Time series plot of dissolved chloride data from the Thompson River at Spences Bridge, 1986-1996.
Figure 54 Time series plot of dissolved sodium data from the Thompson River at Spences Bridge, 1986-1996.
Figure 55 Time series plot of total phosphorus data from the Thompson River at Spences Bridge, 1986-1996.
References
APPENDIX 1
APPENDIX 2
Regression modeling results continued
APPENDIX 3

Prepared for:

Environment Canada and
BC Ministry of Environment, Lands and Parks

Prepared by:

Central Limit Statistical Consulting
Vancouver, BC

August, 1999

Robin D. Regnier¹ and Andrea Ryan²

August, 1998