2. Adult entry Allocated to tribs Return to natal stream or IGH — some straying Spawners in trib Females Fry Fingerlings Parr Smolts Ocean entry Fingerlings (Scott & Shasta only) Parr Smolts Age 0 smolts (Shasta only) SmoltsIGH release Pinniped predation In river harvest (T Pre-spawn survival o Dep.) (Cohort specific) % females Fingerlings Density independent survival Density independent survival Size scalar (Reach 1 only) Movement mortality Exodus if K available Refuge streams only Smolt-to-adult survival Post-release mortality Distance Disease Temperature Flow (Q) Migration survival Ocean harvest Fry-to-fingerling survival Density dependent survival Reach 1: Flow & temperature dependent Reach 2-6: Refuge dependent Simulate growth 6/1-10/30 (Reach 1) Adult return Mainstem Klamath Tributary Reaches Age 3 adults Model Reaches

3. Average weekly timing of coho passage from river entry through the six reaches of the Klamath River mainstem. Back to Diagram

4. Function representing the simulated effect of temperature on prespawning survival. Temperature is the maximum mean weekly temperature experienced during migration. Back to Diagram

5. Effect of temperature on capacity used within the Klamath coho IMF. Temperature expressed as WAT and applied on a weekly basis. Back to Diagram

6. Effect of flow between 650 and 3,500 cfs on juvenile coho summer rearing capacity in the mainstem Klamath between IGD and the Shasta River. Back to Diagram

7. S Total = 0.95 (d/100) Function used to predict the effect of migration distance on survival of coho smolts migrating through each reach of the Klamath River. Back to Diagram

8. Logistic function used to predict the scaled effect of temperature on survival of coho smolts migrating through each reach of the Klamath River. Dashed vertical lines represent the lower and upper temperature thresholds of 17 ˚C and 26 ˚C. Back to Diagram

9. Logistic function used to predict the scaled effect of temperature mortality on coho smolts migrating in the mainstem Klamath River between Iron Gate Dam and Portuguese Creek. Dashed vertical lines represent the lower and upper temperature thresholds of 14 ˚C and 20 ˚C. The gray solid line represents the temperature scalar derived for temperature effects on mortality in Tech Memo 4. Gray dashed vertical lines represent the lower and upper temperature thresholds of 17 ˚C and 26 ˚C. Back to Diagram

10. Logistic function used to predict the scaled effect of flow on survival of coho smolts migrating through the upper, middle, and lower mainstem reaches of the Klamath River. Back to Diagram

11. Map of the Klamath River denoting reaches included in the Klamath Coho Integrated Modeling Framework. Numbers correspond to mainstem reach numbers. Back to Diagram