Falls River Project Water Use Plan Falls River Fish ... - BC Hydro

Falls River WUP Monitoring 2008/2009
Table of Contents
1 INTRODUCTION ....................................................................................................1
1.1 Study Area.........................................................................................................1
1.2 Periodicity Review and Incubation Assessment.......................................................4
1.2.1 Periodicity Review.......................................................................................... 4
1.2.2 Incubation Assessment................................................................................... 4
2 METHODS .............................................................................................................8
2.1 Survey Design....................................................................................................8
2.1.1 Incubation area/Site Selection......................................................................... 8
2.1.2 Survey Timing ............................................................................................... 9
2.2 Intragravel/Physicochemical Parameters ................................................................9
2.2.1 Dissolved Oxygen ........................................................................................ 11
2.2.2 Conductivity ................................................................................................ 11
2.2.3 pH .............................................................................................................. 11
2.2.4 Salinity ........................................................................................................ 11
2.2.5 Water Temperature...................................................................................... 11
2.3 Water Depth and Discharge ..............................................................................11
2.3.1 Water Velocity and Discharge levels.............................................................. 12
2.3.2 Data Analysis............................................................................................... 14
2.4 Substrate Composition (Wolman Pebble Counts) .................................................14
3 RESULTS AND DISCUSSION.................................................................................16
3.1 Site location and Survey timing ..........................................................................16
3.2 Intragravel Physicochemical Parameters...............................................................19
3.3 Water Depth and Discharge ..............................................................................21
3.3.1 Stage/Discharge Relationship ....................................................................... 22
3.3.2 Water Depth in the Study Area..................................................................... 24
3.4 Substrate Composition (Wolman Pebble Counts) .................................................25
4 RECOMMENDATIONS for Year 2...........................................................................27
5 REFERENCES........................................................................................................30
6 APPENDICES........................................................................................................33
Cambria Gordon and Metlakata Fisheries iv