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Clean Rivers, Clean Lake 8 -- New Projects on KK and Menomonee Rivers -- Dave Fowler

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Clean Rivers, Clean Lake 8 -- New Projects on KK and Menomonee Rivers -- Dave Fowler

  1. 1. Clean Rivers Clean Lakes 8th Annual Conference New Projects on the KK and Menomonee RiversDavid C. Fowler CFMAssociation of State Floodplain Managers Region VDirectorMilwaukee Metropolitan Sewerage District Senior ProjectManager
  2. 2. Floodplain Managers Celebrating Job Security 2
  3. 3. Cycle of Increasing Risks Structure to Control More Floods Development Placed at RiskDevelopment at Risk Changes in the Watershed Structure Rendered Inadequate • Loss of natural functions & services • Increased runoff • Deterioration • Changing climate • Maintenance Issues 3
  4. 4. Natural Floodplain FunctioningSlide Courtesy of John Mc Shane
  5. 5. Structural Flood ManagementUnnaturalFloodplain
  6. 6. Healthy Stream Ecosystems
  7. 7. Stressed Stream Ecosystem
  8. 8. Sustainable Flood Management
  9. 9. Flood Management ProjectsKinnickinnic River Watershed Objectives: Reduce Flood Risk Improve Public Safety Stream Channel Rehabilitation Neighborhood Development
  10. 10. Kinnickinnic River WatershedWas voted one of the top ten worst rivers in North America in 2007
  11. 11. Lost Wetlands Kinnickinnic River Year 1836 Vs Year 2009 (Increased Stream Chanel Miles)Slide Courtesy of Tom Slawski
  12. 12. Kinnickinick River 1930-1960• Channel photos taken April 1960 in vicinity of S. 6th St Bridge• Channel constructed by WPA in 1930’s
  13. 13. March 1960 Flood EventFlooding in S. 12th St South of the KK River
  14. 14. Old Flood Risk Management Improved Channel ???
  15. 15. Concrete Channel Encouraged Development in the “real” Floodplain
  16. 16. Kinnickinnic River9th Place and ClevelandJune 7, 2008 (50 Year Flood)
  17. 17. KK River “100 year ”Floodplain and Floodway
  18. 18. Stream Channel Rehabilitation: Water Quality, Stream Function and Community Development
  19. 19. Kinnickinnic River Vision
  20. 20. KK River 6th Bridge (1960) Standing on the S. 6th St Bridge, looking east.Standing on the former RRTrestle, looking NW.
  21. 21. S. 6th St Bridge (2009)
  22. 22. S. 6th St Bridge (2011)View from the West side of the Bridge.
  23. 23. KK River 6th Street to I -94 Upstream 2010•Existing concrete channel•Channel bound by MMSD facilities & abandoned RR trestle
  24. 24. Concrete Channel Removal
  25. 25. Channel Construction Completed
  26. 26. Menomonee River Stream Channel Rehabilitation Objectives:Improve Fish PassageSustain Water ResourcesPart of a Sustainable Watershed Plan 26
  27. 27. Impacts to Flood Elevations• MCG Flood Management Facility • Valley Park Floodwall and Levee
  28. 28. Project Design• Construction Document Preparation – Topographic Survey – Structural Evaluations – Plans and Specifications – Plan for Contractor Operations • Construct from Upstream to Downstream • Maintenance of Normal and High Flows • Fish Passage Boulder Placement • Final Restoration
  29. 29. Current Conditions• Concrete Invert with Low Flow Channel – Steep Slope – High Velocities – Problems for Fish• Stone Walls – Significant Deterioration• Accessibility Issues
  30. 30. Project Design• Riffle and Pool Layout – Fish Passage Support• WPA Wall Repairs – Areas of Failure and in Need of General Repair• Existing Outfalls to River – Maintained During Construction• Railroad Bridge Issues – Fragile Abutments and Structure• Access During and After Construction• Modeling – HEC-RAS – Sediment Transport
  31. 31. Project Design• Construction Document Preparation – Topographic Survey – Structural Evaluations – Plans and Specifications – Plan for Contractor Operations • Construct from Upstream to Downstream • Maintenance of Normal and High Flows • Fish Passage Boulder Placement • Final Restoration
  32. 32. Rendering of PotentialDesign
  33. 33. Anticipated Results• Fish Passage• Flood Elevations• Future Segments
  34. 34. Underwood Creek Project Menomonee Watershed Objectives:Improve Fish PassageSustain Water ResourcesPart of a Sustainable Watershed Plan 34
  35. 35. Underwood Creek – Before Construction 2008
  36. 36. Underwood Creek – Typical Upstream (Phase 1) Segment
  37. 37. Rehabilitated Channel Phase I - Riffle Section
  38. 38. Rehabilitated Channel – Pool Section
  39. 39. Underwood Creek Phase I Construction - 2009
  40. 40. Underwood Creek Phase I Construction - 2009
  41. 41. Underwood Creek Phase I – Post Construction 2009 Pool Riffle
  42. 42. Underwood Creek – Downstream (Phase 2)
  43. 43. 43
  44. 44. Questions?

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