Wahleach Project Water Use Plan Wahleach Reservoir ... - BC Hydro

Table of Contents
EXECUTIVE SUMMARY .......................................................................................... III
ACKNOWLEDGEMENTS .......................................................................................... V
TABLE OF CONTENTS............................................................................................ VI
LIST OF FIGURES ................................................................................................. VIII
LIST OF TABLES....................................................................................................... X
LIST OF TABLES....................................................................................................... X
LIST OF PHOTOGRAPHS ....................................................................................... XI
1 INTRODUCTION ................................................................................................ 1
2. STUDY AREA..................................................................................................... 2
3. METHODS.......................................................................................................... 3
3.1 Fertilizer Additions...................................................................................................................................... 3
3.2 Reservoir Operations ................................................................................................................................... 8
3.3 Physical and Chemical................................................................................................................................. 8
3.4 Phytoplankton Enumeration ...................................................................................................................... 10
3.5 Zooplankton............................................................................................................................................... 10
3.6 Fish Stocking ............................................................................................................................................. 11
3.7 Spawner Surveys ....................................................................................................................................... 11
3.8 Gillnetting and Minnow Trapping ............................................................................................................. 12
3.9 Hydroacoustics .......................................................................................................................................... 13
4. RESULTS ......................................................................................................... 15
4.1 Reservoir elevation .................................................................................................................................... 15
4.2 Physical Parameters ................................................................................................................................... 15
4.3 Water Chemistry........................................................................................................................................ 17
4.4 Phytoplankton............................................................................................................................................ 20
4.5 Zooplankton............................................................................................................................................... 25
4.6 Spawner Surveys ....................................................................................................................................... 29
4.7 Gillnetting and Minnow Trapping ............................................................................................................. 33
4.8 Hydroacoustics .......................................................................................................................................... 39
5. DISCUSSION ................................................................................................... 42
Comparison with other lakes/reservoirs........................................................................................................... 44
6. RECOMMENDATIONS..................................................................................... 47
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