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Biological Opinions - Bureau of Reclamation

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8.3.6 Effects to Habitat for Larvae and Age-0 Juveniles ................................................. 154<br />

8.3.7 Effects to the SNS in Gerber Reservoir .................................................................. 158<br />

8.3.8 Effects to the LRS and the SNS in Tule Lake Sump 1A ........................................ 162<br />

8.3.9 Effects to LRS and the SNS in the Lost River ........................................................ 165<br />

8.3.10 Summary <strong>of</strong> Effects <strong>of</strong> the Proposed Action to LRS and SNS in the Lost River<br />

Subbasin Recovery Unit ..................................................................................................... 167<br />

8.4 Effects <strong>of</strong> Proposed Project Operation and Maintenance Activities ........................... 168<br />

8.4.1 Effects <strong>of</strong> Clear Lake Dam Maintenance ................................................................ 168<br />

8.4.2 Effects <strong>of</strong> A Canal Headworks Maintenance and Canal Salvage ........................... 168<br />

8.4.3 Effects <strong>of</strong> Lost River Diversion Channel Maintenance .......................................... 169<br />

8.4.4 Effects <strong>of</strong> Link River Dam Fish Ladder Maintenance ............................................ 169<br />

8.4.5 Effects <strong>of</strong> Maintenance to Other Project Canals, Laterals, and Drains .................. 170<br />

8.4.6 Effects <strong>of</strong> Right-<strong>of</strong>-way and Access Maintenance .................................................. 170<br />

8.4.7 Effects <strong>of</strong> Water Measurement Gage Maintenance ................................................ 171<br />

8.4.8 Summary <strong>of</strong> Effects <strong>of</strong> Proposed O&M Activities to LRS and SNS ..................... 171<br />

8.5 Effects <strong>of</strong> the Proposed Conservation Measures ........................................................ 171<br />

8.5.1 Canal Salvage.......................................................................................................... 172<br />

8.5.2 Controlled (Captive) Propagation ........................................................................... 172<br />

8.5.3 Capture <strong>of</strong> Adult Suckers in Lake Ewauna Reservoir and Relocation to UKL ...... 174<br />

8.5.4 Effects <strong>of</strong> Recovery Implementation Team Participation ....................................... 174<br />

8.5.5 Summary <strong>of</strong> Effects to LRS and SNS from Proposed Conservation Measures ..... 175<br />

8.6 Cumulative Effects - Lost River Sucker and Shortnose Sucker ................................. 175<br />

9 LOST RIVER SUCKER AND SHORTNOSE SUCKER CRITICAL HABITAT ............ 177<br />

9.1 Status and Environmental Baseline <strong>of</strong> Critical Habitat .............................................. 177<br />

9.2 Analytical Approach and Role <strong>of</strong> Critical Habitat in LRS and SNS Recovery .......... 180<br />

9.3 Effects <strong>of</strong> Proposed Project Operations to LRS and SNS Critical Habitat ................. 181<br />

9.3.1 Effects to LRS and SNS Critical Habitat Unit 1 ..................................................... 181<br />

9.3.2 Effects to LRS and SNS Critical Habitat Unit 2 ..................................................... 184<br />

9.4 Cumulative Effects to Critical Habitat ........................................................................ 188<br />

10 LRS AND SNS INTEGRATION AND SYNTHESIS (Jeopardy and Destruction or Adverse<br />

Modification Determinations) ..................................................................................................... 189<br />

10.1 Range-wide Status <strong>of</strong> the LRS and SNS and Their Environmental Baseline in the<br />

Action Area ............................................................................................................................. 189<br />

10.2 Summary <strong>of</strong> Effects UKL Recovery Unit ................................................................... 190<br />

10.3 Summary <strong>of</strong> Effects to the Lost River Basin Recovery Unit ...................................... 192<br />

10.4 Effects to LRS and SNS Population Viability ............................................................ 193<br />

10.5 Conclusion for LRS and SNS ..................................................................................... 196<br />

10.6 Basis for the Conclusion Regarding Jeopardy for LRS and SNS ............................... 196<br />

10.7 Basis for the Conclusion Regarding Destruction or Adverse Modification <strong>of</strong> Critical<br />

Habitat 197<br />

11 SONCC COHO SALMON CRITICAL HABITAT ........................................................... 199<br />

11.1 Analytical Approach ................................................................................................... 199<br />

11.1.1 Overview <strong>of</strong> NMFS’ Assessment Framework ........................................................ 199<br />

11.1.2 Concept <strong>of</strong> the Natural Flow Regime ..................................................................... 201<br />

11.1.3 Flow and Rearing Habitat Analysis ........................................................................ 202<br />

11.1.4 Evidence Available for the Consultation ................................................................ 206<br />

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