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Nechako River Summary of Existing Data

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Nechako River Summary of Existing Data Nechako Environmental Enhancement Fund British Columbia Nechako River Summary of Existing Data October 1999 Prepared by: RescanTM Environmental Services Ltd. Vancouver, British Columbia TM ERRATA Following are revisions to the Report “Nechako River – Summary of Existing Data” (October 1999) Page 2-13, Second Paragraph, Last Sentence: The last sentence in the second paragraph, i.e. “Design approval for the Cheslatta Fan Channel was obtained from the NFCP in July 1993”, should be replaced with the following: “The Nechako Fisheries Conservation Program gave a qualified approval for the design of a non-erodible channel (subject to nine items being addressed) and indicated final approval for the design of a channel would follow only after a regime channel concept had been considered further by the Kemano Completion Project and the Technical Committee.” Page 5-10, Figure 5-7: The top line in the Legend should read "Adult Sockeye Migration Routes". Page 5-15, Section 5.6.5, Waste Water Dilution: The two sentences at the bottom of this page should be replaced with the following: “Fort Fraser and Vanderhoof are the two main sources of sewage discharged to the Nechako River. Recently the firm, Urban Systems, was commissioned by Vanderhoof to undertake a study of their present sewage treatment system, which consists of retention lagoons, and to recommend options for enhancing treatment from this major point source in the future.” TABLE OF CONTENTS TM NECHAKO RIVER SUMMARY OF EXISTING DATA TABLE OF CONTENTS TABLE OF CONTENTS ................................................................................................................................i List of Figures .................................................................................................................................iii List of Tables ..................................................................................................................................iv List of Plates...................................................................................................................................iv List of Acronyms and Abbreviations................................................................................................v 1. INTRODUCTION...................................................................................................................................1-1 2. BACKGROUND ....................................................................................................................................2-1 2.1 Chronology of Key Events.....................................................................................................................2-1 2.2 Kemano I Project Facilities ....................................................................................................................2-5 2.3 Kemano Completion Project ..................................................................................................................2-8 2.4 Post-KCP Kenney Dam Cold Water Release Facility..........................................................................2-10 2.4.1 KDRF Design with KCP.....................................................................................................2-12 2.4.1.1 Performance Design Criteria ............................................................................2-12 2.4.2 KDRF Design without KCP................................................................................................2-13 2.4.3 KDRF Alternatives without KCP ......................................................................................2-14 2.4.4 Recent Consideration of KDRF ..........................................................................................2-16 3. THE AGREEMENTS.............................................................................................................................3-1 3.1 The “1950 Agreement” .........................................................................................................................3-1 3.2 The 1987 Settlement Agreement ...........................................................................................................3-1 3.3 The B.C.-Alcan 1997 Agreement ..........................................................................................................3-2 4. NECHAKO ORGANIZATIONS..............................................................................................................4-1 4.1 Nechako Fisheries Conservation Program ............................................................................................4-1 4.1.1 Strategic Framework ............................................................................................................4-1 4.1.2 Activity Flow Charts ............................................................................................................4-1 4.1.3 First Nations Involvement ....................................................................................................4-2 4.1.4 NFCP Reports ......................................................................................................................4-2 4.2 Nechako Environmental Enhancement Fund Management Committee ................................................4-2 4.3 Nechako Watershed Council .................................................................................................................4-3 4.4 Nechako River Alliance ........................................................................................................................4-3 4.5 First Nations ...........................................................................................................................................4-4 5. CURRENT STATUS OF THE NECHAKO RIVER SYSTEM .................................................................5-1 5.1 Nechako Reservoir ................................................................................................................................5-1 Rescan™ Environmental Services Ltd. - i - TABLE OF CONTENTS 5.2 Nechako Canyon ...................................................................................................................................5-2 5.3 Murray-Cheslatta System ......................................................................................................................5-2 5.4 Nechako River .......................................................................................................................................5-3 5.4.1 Flows ....................................................................................................................................5-3 5.4.2 Water Temperature ...............................................................................................................5-5 5.5 Fisheries of the Nechako System ...........................................................................................................5-9 5.5.1 Sockeye Salmon ...................................................................................................................5-9 5.5.2 Chinook Salmon ...................................................................................................................5-9 5.5.3 Resident Fish Species .........................................................................................................5-11 5.6 Water Management...............................................................................................................................5-12 5.6.1 Alcan’s Water License .......................................................................................................5-12 5.6.2 Agricultural Water Use ......................................................................................................5-13 5.6.3 Municipal and Domestic Water Use ..................................................................................5-14 5.6.4 Water Quality .....................................................................................................................5-15 5.6.5 Waste Water Dilution .........................................................................................................5-15 5.6.6 Aquatic Weeds ...................................................................................................................5-15 5.6.7 Water-Based Transportation and Recreation .....................................................................5-16 5.6.8 Flood Control .....................................................................................................................5-17 6. FUTURE ENHANCEMENT OF THE NECHAKO WATERSHED ..........................................................6-1 REFERENCES .........................................................................................................................................R-1 APPENDICES Appendix A - NFCP Activity Flow Charts................................................................................................................A-1 Appendix B - List 1998 - 1999 Nechako Fisheries Conservation Program Reports .................................................B-1 - ii - Rescan™ Environmental Services Ltd. TABLE OF CONTENTS LIST OF FIGURES Figure Page 2-1 Location of Existing Kemano Facilities...................................................................................................2-5 2-2 Schematic of Existing Kemano Hydro-Electric Generating Station........................................................2-7 2-3 Proposed KCP Kenney Dam Cold Water Release Facility ......................................................................2-9
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