Caltrans > Engineering > Division of Design > Manuals & Guidance > Fish Passage

Fish Passage Design for Road Crossings

This guide is intended to provide detailed instructions to assist designers in generating projects that will acheive resource agency goals for fish passage within a state highway project context.

Developed in conformance with both state (California Department of Fish and Game) and Federal (NOAA Fisheries Service, Southwest Region) criteria, "Fish Passage Design for Road Crossings" provides worksheets, flow charts, design examples and other design aids to assist the designer in achieving permit achievable projects.

For any questions regarding this guide please contact Bruce Swanger, SR. T.E. in the Office of Highway Drainage Design at (916) 651-9030.

Cover and TOC.pdf
Chapter 1 : Foreword and Introduction
Chapter 2 : Fish Passage Considerations for Road Crossing Design
Chapter 3 : Design Elements
Chapter 4 : Active Channel & Low-Slope
Chapter 5 : Stream Simulation Design Option
Chapter 6 : Hydraulic Design Option For New Culverts
Chapter 7 : Retrofit Design
Chapter 8 : Grade Control Design
Chapter 9 : Fishways
Chapter 10 : References
Appendix A : Glossary
Appendix B : CDFG Culvert Criteria For Fish Passage
Appendix C : NOAA Guidelines for Salmonid Passage at Stream Crossings
Appendix D : Caltrans Fish Passage Design Forms
Appendix E : Fish Passage Flows
Appendix F : Hydraulics of Baffles
Appendix G Sample Calcs and Struct Details
Appendix H - Design Example - Active Channel Design Option
Appendix I - Design Example - Hydraulic Design Option
Appendix J - Design Example - Hydraulic Baffle Design Option
Appendix K - Design Example - Hydraulic Rock Weir Design Option (caution: large file)
Appendix L - Design Example - Stream Simulation Design Option
Appendix M Construction Considerations
Appendix N Rock Weir Design
Appendix O Rock Weir and Associated Materials

This page last updated December 1, 2009