Landowners – concerned about potential seepage related to Restoration Flows?
- Call the Seepage Hotline: 916-978-4398 or
- Click on RestorationFlows@restoresjr.net and send us the following information:
- Your name, phone number, and the best time to contact you
- Description of the potential seepage location(s)
Program staff will follow up with you to discuss further and arrange a site visit, if needed.
- Visit the Groundwater Monitoring Page to see recent groundwater level measurements.
Reclamation’s Seepage Management Plan has two goals:
- To limit or reduce Restoration Flows to the extent necessary to avoid material adverse groundwater seepage impacts, which are waterlogging or root zone salinity impacts to agricultural crops. We do this through over 200 groundwater monitoring wells, setting of groundwater level thresholds in these wells (see Appendix H of the Seepage Management Plan), and limiting Restoration Flows to avoid increasing groundwater levels over these thresholds (see Appendix J of the SMP).
- Construct seepage projects, which may include physical or non-physical projects, that allow higher flows in the San Joaquin River and bypasses without causing groundwater seepage impacts. Seepage projects may include seepage easements, land acquisition from willing sellers (see FAQ sheet below), interceptor lines, drainage ditches, slurry walls, etc. The map below shows seepage project priorities by the flow level that might impact the identified parcels.
Seepage Management Plan – September 2014 (Appendices E, H and J updated March-June 2017)
- Main Body of SMP
- Appendix A: Seepage Effects of Concern
- Appendix B: Historic Groundwater Levels and Surface Water Flow
- Appendix C: Areas Potentially Vulnerable to Seepage Effects
- Appendix D: Sediment Texture and Other Data (updated May 2015)
- Appendix E: Monitoring Network (updated March 2017)
- Appendix F: Aerial Imagery, Remote Sensing Data
- Appendix G: Soil Salinity Thresholds
- Appendix H: Groundwater Level Thresholds (updated June 2017)
- Appendix I: Groundwater Modeling
- Appendix J: Operations (updated March 2017)
- Appendix K: Landowner Claims Process
- Appendix L: Seepage Project Handbook
- Attachment A– Methodology
- Attachment B– Reclamation Final Design Process, April 2008
- Attachment C– Reclamation Design Data Collection Guidelines for Drains, Chapter 3, Section 8, September 2007
- Attachment D– Slurry Wall Cost Estimates, 2011
- Appendix M: References Cited