Wahleach Project Water Use Plan Lower Jones Creek ... - BC Hydro

Table of Contents
Executive Summary ...................................................................................................................... ii
1. Introduction ............................................................................................................................1
2. Site Description and Background ..........................................................................................2
3. Methods .................................................................................................................................4
3.1 Adult Enumeration..............................................................................................................4
3.2 Escapement Estimates........................................................................................................5
3.3 Channel Morphology and Spawner Density ........................................................................7
3.4 Fry Trapping ........................................................................................................................8
3.5 Population Estimates...........................................................................................................9
3.6 Flow and Environmental Monitoring ..................................................................................10
4. Results.................................................................................................................................10
4.1 Chum Salmon Escapement...............................................................................................10
4.2 Coho Salmon Adult Escapement ......................................................................................13
4.3 Flow and Channel Morphology..........................................................................................13
4.4 Temperature Monitoring ....................................................................................................16
4.5 Lower Jones Creek Fry Migration .........................................................................................17
4.5.1 Trapping Results.........................................................................................................17
4.5.2 Egg-To-Fry Survival Estimates ...................................................................................19
4.5.3 Water Temperature and Accumulated Thermal Units ................................................20
4.8 Lorenzetti Creek Trapping Results....................................................................................20
4.8.1 Temperature and Accumulated Thermal Units ...........................................................22
5. Discussion ...........................................................................................................................23
5.1 Chum Salmon Escapement...............................................................................................23
5.2 Coho Salmon Escapement................................................................................................24
5.3 Fry Out-Migration ..............................................................................................................25
5.4 Flow and Channel Morphology.........................................................................................26
5.5 BC Hydro Enhancement Monitoring.................................................................................26
6. Conclusions and Recommendations ...................................................................................27
7. References ..........................................................................................................................28
Lower Jones Creek Fish Productivity Monitoring 2008-2009 iii