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Team 8: Grand River Rapids

Team 8: Grand River Rapids. Team 8. Aaron Vanderhill. Jim Barron. Jeff Van Laar. Tom Marshall. Outline. Context & Customer Project Overview Design Alternatives Final Design Design Norms Site Planning Dam Modification – HEC-RAS modeling Future Work Questions. Context & Customer.

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Team 8: Grand River Rapids

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  1. Team 8: Grand River Rapids

  2. Team 8 Aaron Vanderhill Jim Barron Jeff Van Laar Tom Marshall

  3. Outline • Context & Customer • Project Overview • Design Alternatives • Final Design • Design Norms • Site Planning • Dam Modification – HEC-RAS modeling • Future Work • Questions

  4. Context & Customer • Kayakers and Canoeists have shown interest • GRWW • Recreational course not only for experienced kayakers • Revitalization of Downtown

  5. Project Overview • Return the Grand River to a more natural state • Eliminate dangerous hydraulic at 4th street dam • Design entry and exit locations for kayakers

  6. Design Alternatives for River • Removal of 5 beautification dams • Replace with natural rocks • Diversion Channel • Go around 4th street dam • 4th Street Dam modification • Removal of 4th Street Dam

  7. Final Design • Hybrid of alternatives 1 and 3 • Partial replacement of downstream dams • Modification of 4th Street Dam with stair step • Increase entry and exit points • Reasons • Meets client’s needs • Improves fish habitat • Other alternatives not feasible • Sediment behind 4th Street Dam • Would look unnatural • Greater costs

  8. Design Norms • Caring • Eliminate dangers associated with dams, making the river safer • Justice • Respect rights of fishermen and property owners • Stewardship • Naturalize river • Improve fish habitat

  9. Site Design • Entry & Exit Points • Increase Usability

  10. Special Study • FTC&H • Green Grand Rapids • 18 Sites • Pre-owned by City of Grand Rapids

  11. Four Entry and Exit Points Fish Ladder Park Canal Street Park Fulton Street Ford Museum

  12. Fish Ladder Park Fish Ladder Park

  13. Canal Street Park Canal Street Park

  14. Ford Museum, Ah-Nab-Awen Park Ford Museum

  15. Fulton Street Site Fulton Street

  16. Safety • Signs • Guide, Regulate, and Warn • Lighting • Guard Rails

  17. Floatable Dock • Kayak Dock • $1,299 each for Economy Design • Hand ropes on dock

  18. Project Location

  19. Modeling Decisions • Flow Rate • River used between April and November • Low flow = 1,700 cfs • High flow = 50,000 cfs (100 year storm) • Design flow of 3,200 cfs • Still tested with 100 year storm

  20. Modeling Decisions • Modeling Accuracy • Rocks & boulders as series of weirs • California Department of Transportation

  21. 4th Street Dam Safety Hazard

  22. Design Solution – Stairstep

  23. Downstream Modifications • Dam modification creates rapids

  24. Future Work • Finalize HEC-RAS • Final Report • Prepare for Sr. Design Night • Benchtop Model demonstration • Cost Estimation • AutoCAD Drawings

  25. Benchtop Model • Demonstration

  26. Questions

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