Levee Stability / Channel Capacity

Levee evaluations for the SJRRP identify the need to remediate levees to convey Restoration Flows.

Priority 1 levees include levees that will convey a 2,000 cfs Restoration Flow within the current  Restoration Flow path (40 miles of levee); Priority 2 levees will convey a 2,500 cfs Restoration Flow that are not in Priority 1 (30 miles of levee); and Priority 3 levees will convey a 4,500 cfs Restoration Flow (65 miles of levee). Geotechnical data collection and evaluations will be followed by design and implementation of any levees that exceed USACE criteria for levee seepage and stability.

Priority 1 levee evaluations were completed in April 2015 and feasibility-level design is being conducted on a 3 mile segment of the Middle Eastside Bypass. Priority 2 and 3 feasibility-level design will be determined once the evaluations are complete. The current project costs do not include design or implementation of Priority 2 and 3 Levees.

 2019  Public Draft Channel Capacity Report

Public comments on this report are due no later than  January 8, 2019 and should be submitted to Alexis Phillips-Dowell at Alexis.Phillips-Dowell@water.ca.gov or Regina Story at rstory@usbr.gov.

Public draft 2019 Restoration Year Channel Capacity Report

Appendix A-PEIS/R Text Related to Channel Capacity

Appendix B- Evaluation of the Effect of Subsidence on Flow Capacity in the Chowchilla and Eastside Bypasses,and Reach 4A of the San Joaquin River

Appendix C- Evaluation of the Effects of Subsidence and Sediment Transport on Channel Capacity in the EastsideBypass and Reach 4A of the San Joaquin River

 

2018 Channel Capacity Report

Channel Capacity Report 2018 Restoration Year

Appendix A- PEIS/R Text Related to Channel Capacity

Appendix B- Reach 2A and 2B Update San Joaquin River In-channel Capacity Analysis

Appendix C- Reach 2A Update- Levee Capacity Evaluation of Geotechnical Gravelly Ford Study Area