San Lorenzo River a tidbit of data on Temperature and Coho Salmon Kristina Finstad Water Resources Management Watershed Section; Water Department City of Santa Cruz Summary
• Temperature on the rise • Juvenile coho salmon stressometer • A tidbit of SLR temperature data • Importance of cool water refugia
Temperature on the Rise Ridiculously Resilient Ridge
The Drunken Jet Stream Historic Flow in the San Lorenzo River Klamath River fish kill Fish Response to Temperature -- Dependent Factors Huchinson 1976 The Straw That Broke the Coho’s Back…
“Yup, Straw will do that to you.” Stressometer
• Flow • Shade • Channel morphology • Substrate • Water Quality • Genetics • Food Abundance Stressometer
• Flow • Shade • Channel morphology • Substrate • Water Quality • Genetics • Food Abundance Temperature and Growth Rate - Coho (Brett et al. 1982) References 1 USEPA 2003 2 Sullivan et al. 2000 3 WDOE 2002 4 Brett 1952 5 Welsh et al. 2001 6 Shelbourn 1980 7 Everson 1973 8 Konecki et al. 1995a 9 USEPA 1999 Tidbit Temperature Logger Logging Locations
San Lorenzo River • Upstream • Downstream
Tributaries • Zayante Creek • Bean Creek • Branciforte Creek Coho Recovery Land 7 Day Average Temperature (2011)
22 72 Upper Zayante Lower Zayante Upper Bean Lower Bean 21 70 Upper Branciforte Lower Branciforte Upstream SLR Downstream SLR 20 Lower SLR Limit of Persistence 68
19 66 C)
° 18
64 F) ° 17 62 Temperature ( Temperature 16
60 ( Temperature 15
58 14
56 13
54 12
11 52
10 50 7 Day Average Temperature (2011)
22 72 Upper Zayante Lower Zayante Upper Bean Lower Bean 21 70 Upper Branciforte Lower Branciforte Upstream SLR Downstream SLR
20 Lower SLR Limit of Persistence Optimum Range 68
19 66 C)
° 18
64 F) ° 17 62 Temperature ( Temperature 16
60 ( Temperature 15
58 14
56 13 OPTIMUM RANGE
54 12
11 52
10 50 Zayante Creek
Lower Zayante Creek Temperature (2009-2011)
22 72 ZT2 (2009) 21 70 ZT2 (2010)
20 ZT2 (2011) 68
19 Limit of Persistence 66 C)
° 18 64
17 F) ° 62
Temperature ( Temperature 16 60
15 ( Temperature 58 14
56 13
54 12
11 52
10 50 Bean Creek
Upper Bean Creek Temperature (2009-2011)
22 BT1 Average (2009) 72
BT1 Average (2010) 21 70
BT1 Average (2011) 20 68 Limit of Persistence 19 66 C)
° 18
64 F) ° 17 62
Temperature ( Temperature 16
60 ( Temperature 15
58 14
56 13
54 12
11 52
10 50 Branciforte Creek Lower Branciforte Creek Temperature (2009-2012)
22 72
B40 T2 (2009) B40 T2 (2010) 21 70 B40 T2 (2011) B40 T2 (2012)
20 Limit of Persistence Optimum Range 68
19 66 C)
° 18 64
17 F) ° 62
Temperature ( Temperature 16 60
15 ( Temperature
58 14
56 13
54 12
11 52
10 50 Branciforte Flood Control Channel Branciforte Creek Temperature Comparison (2014)
26 80 7 Day Avg (B40 Upstream) 25 78 7 Day Avg (B40 FCC) 24 76
23 Limit of Persistence 74
22 72 C) ° 21 70
F)
20 ° 68
Temperature ( Temperature 19 66 18 Temperature ( Temperature 64 17 62 16
60 15
14 58
13 56
12 54 Reservoir Release influences SLR Temperature
22 72 SLR UN 21 Newell 70
20 SLR DN 68 SLR US 19 Limit of Persistence 66 C) ° 18 64
17 62 Temperature ( Temperature 16 60 15
58 14
56 13
54 12
11 52
10 50 Summary
• Rising Temps
• Stressometer
• SLR within “limit of persistence”
• Recovery Land = cool water refugia
Thank you!
Randy Holloway Jessica Missaghian Ryan Bassett Zeke Bean Chris Berry