Downtown Guadalupe River Project Mark Ellis Project Manger  US Army Corps of Engineers - Sacramento 28 October 2009
Guadalupe River Project <ul><li>170 square mile watershed </li></ul><ul><li>Project Authorized by WRDA 1986 </li></ul><ul>...
Pre-Project Performance <ul><li>Capacity Limitations </li></ul><ul><li>Hydraulic </li></ul><ul><li>Debris Loading </li></u...
Downtown Guadalupe River
Global Solution Strategy <ul><li>Collaborative process initiated in December 1997 to include the Corps of Engineers, Santa...
Project Features <ul><li>Bypass Culverts </li></ul><ul><li>Low-flow channel for fish passage </li></ul><ul><li>Terraced ri...
GUADALUPE RIVER PROJECT COLLABORATIVE A key outcome of the Collaborative was the re-design of the project to include a dou...
Construction Challenges <ul><li>Limited in-stream activities </li></ul><ul><li>Stringent traffic flow and parking requirem...
Technical Challenges <ul><li>Urban Downtown Area </li></ul><ul><ul><li>(Utilities, Traffic, Noise) </li></ul></ul><ul><li>...
Environmental Challenges <ul><li>Loss of SRA Cover </li></ul><ul><li>Loss of Riparian Vegetation  </li></ul><ul><li>Threat...
Other Challenges <ul><li>Local Interest Groups </li></ul><ul><li>Redevelopment Agency </li></ul><ul><li>Bike Path Needs </...
 
Contract 3A:  Coleman Avenue Looking Upstream (Pre-project)
Contract 3A:  Coleman Avenue Looking U/S (Bypass Outlet)
Contract 3A:  Santa Clara St. Looking Downstream (Pre-Project)
Contract 3A:  Santa Clara St. Looking D/S (Bypass Inlet)
Contract 3A:  Confluence Park East Santa Clara Street to St. John Street
 
Contract 3B: Santa Clara Street Looking Upstream (Pre-project)
Contract 3B:  Santa Clara Street Looking Upstream
Contract 3B:  San Fernando St. looking U/S (Bypass Outlet)
 
Contract 3C:  Woz Way looking upstream
Contract 3C: Woz Way Bypass Inlet (Winter 2002)
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Ellis Sess14 102009

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Ellis Sess14 102009

  1. 1. Downtown Guadalupe River Project Mark Ellis Project Manger US Army Corps of Engineers - Sacramento 28 October 2009
  2. 2. Guadalupe River Project <ul><li>170 square mile watershed </li></ul><ul><li>Project Authorized by WRDA 1986 </li></ul><ul><li>Goal to provide 100 yr. flood protection </li></ul><ul><li>Project implemented in six phases </li></ul>
  3. 3. Pre-Project Performance <ul><li>Capacity Limitations </li></ul><ul><li>Hydraulic </li></ul><ul><li>Debris Loading </li></ul>Post-Project 0 14,600 14,600 Santa Clara St 10,100 6,900 17,000 New Julian 9,140 (~ 20 Yr frequency St John Gage Pre-Project BYPASS (cfs) IN CHANNEL (cfs) 100 Yr DISCHARGE (cfs) LOCATION
  4. 4. Downtown Guadalupe River
  5. 5. Global Solution Strategy <ul><li>Collaborative process initiated in December 1997 to include the Corps of Engineers, Santa Clara Valley Water District, City of San Jose, and the Resource Agencies </li></ul><ul><li>Dispute Resolution Memorandum signed September 1998 </li></ul><ul><li>Guadalupe Watershed Inter-agency Working Group </li></ul><ul><li>Partnering Conference </li></ul><ul><li>Adaptive Management Team </li></ul>
  6. 6. Project Features <ul><li>Bypass Culverts </li></ul><ul><li>Low-flow channel for fish passage </li></ul><ul><li>Terraced river banks with gabion and concrete walls </li></ul><ul><li>Plazas </li></ul><ul><li>River walk </li></ul>
  7. 7. GUADALUPE RIVER PROJECT COLLABORATIVE A key outcome of the Collaborative was the re-design of the project to include a double box bypass culvert to help convey flood flows while maintaining and replacing riparian and shaded riverine aquatic (SRA) vegetation for habitat
  8. 8. Construction Challenges <ul><li>Limited in-stream activities </li></ul><ul><li>Stringent traffic flow and parking requirements </li></ul><ul><li>Local codes and regulations for temporary encroachments, traffic </li></ul><ul><li>control and utility work </li></ul><ul><li>Integration with recreational, landscaping and architectural details </li></ul><ul><li>Railroad requirements </li></ul><ul><li>Work adjacent to historical buildings </li></ul><ul><li>Regulatory requirements for fish passage and in-stream activities </li></ul>
  9. 9. Technical Challenges <ul><li>Urban Downtown Area </li></ul><ul><ul><li>(Utilities, Traffic, Noise) </li></ul></ul><ul><li>Incised Channel </li></ul><ul><li>Adjacent Structures </li></ul><ul><ul><li>Settlement </li></ul></ul><ul><ul><li>Deflection/Cracking </li></ul></ul><ul><li>Road Crossing </li></ul><ul><li>RR Crossing </li></ul>
  10. 10. Environmental Challenges <ul><li>Loss of SRA Cover </li></ul><ul><li>Loss of Riparian Vegetation </li></ul><ul><li>Threatened species under ESA </li></ul><ul><ul><li>Steelhead and Chinook Salmon </li></ul></ul><ul><li>Nesting Birds during Construction </li></ul><ul><li>Contaminated Sediment in Box Culvert </li></ul><ul><li>HTRW </li></ul><ul><li>Dewatering </li></ul>
  11. 11. Other Challenges <ul><li>Local Interest Groups </li></ul><ul><li>Redevelopment Agency </li></ul><ul><li>Bike Path Needs </li></ul><ul><li>Resource Agency </li></ul><ul><li>Water District </li></ul><ul><li>Sequence of Funds </li></ul><ul><li>Phased Approach </li></ul><ul><li>Court Mandates </li></ul><ul><li>Litigation </li></ul>
  12. 13. Contract 3A: Coleman Avenue Looking Upstream (Pre-project)
  13. 14. Contract 3A: Coleman Avenue Looking U/S (Bypass Outlet)
  14. 15. Contract 3A: Santa Clara St. Looking Downstream (Pre-Project)
  15. 16. Contract 3A: Santa Clara St. Looking D/S (Bypass Inlet)
  16. 17. Contract 3A: Confluence Park East Santa Clara Street to St. John Street
  17. 19. Contract 3B: Santa Clara Street Looking Upstream (Pre-project)
  18. 20. Contract 3B: Santa Clara Street Looking Upstream
  19. 21. Contract 3B: San Fernando St. looking U/S (Bypass Outlet)
  20. 23. Contract 3C: Woz Way looking upstream
  21. 24. Contract 3C: Woz Way Bypass Inlet (Winter 2002)
  22. 25. Questions & Answers

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