Clean Rivers Clean Lakes
8th Annual ConferenceNew Projects on the KK and
Menomonee Rivers
David C. Fowler CFMAssociation of State Floodplain Managers Region VDirectorMilwaukee Metropolitan Sewerage District Senior ProjectManager
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Floodplain Managers Celebrating Job Security
Cycle of Increasing RisksStructure to
ControlFloods
Development at Risk
StructureRendered
Inadequate
Changes in theWatershed
More Development
Placed at Risk
• Loss of natural functions & services• Increased runoff• Changing climate
• Deterioration• Maintenance Issues 3
Natural Floodplain Functioning
Slide Courtesy of John Mc
Shane
Structural Flood
Management
Unnatural Floodplain
Healthy Stream Ecosystems
Stressed Stream Ecosystem
Sustainable Flood Management
Objectives:Reduce Flood RiskImprove Public SafetyStream Channel RehabilitationNeighborhood Development
Flood Management Projects Kinnickinnic River Watershed
Kinnickinnic River WatershedWas voted one of the top ten worst rivers in North
America in 2007
Kinnickinnic River
Year 1836VsYear 2009(Increased Stream Chanel Miles)
Slide Courtesy of Tom Slawski
Lost Wetlands
•Channel photos taken April 1960 in vicinity of S. 6th St Bridge•Channel constructed by WPA in 1930’s
Kinnickinick River
1930-1960
Flooding in S. 12th St South of the KK River
March 1960 Flood Event
Old Flood Risk Management Improved Channel ???
CONCRETE SUCKS
Concrete Channel Encouraged Development in the “real” Floodplain
Kinnickinnic River9th Place and Cleveland June 7, 2008 (50 Year Flood)
KK River “100 year ”Floodplain and Floodway
Stream Channel Rehabilitation: Water Quality, Stream Function and Community
Development
Kinnickinnic River Vision
KK River 6th Bridge (1960)
Standing on the S. 6th St Bridge, looking east.
Standing on the former RR Trestle, looking NW.
S. 6th St Bridge (2009)
S. 6th St Bridge (2011)
View from the West side of the Bridge.
•Existing concrete channel•Channel bound by MMSD facilities & abandoned RR trestle
KK River 6th Street
to I -94 Upstream
2010
Concrete Channel Removal
Channel Construction Completed
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Menomonee River Stream Channel Rehabilitation
Objectives:Improve Fish PassageSustain Water ResourcesPart of a Sustainable Watershed Plan
Impacts to Flood Elevations• MCG Flood
Management Facility
• Valley Park Floodwall and Levee
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
Current Conditions
• Concrete Invert with Low Flow Channel– Steep Slope– High Velocities– Problems for Fish
• Stone Walls– Significant
Deterioration• Accessibility Issues
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
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
Rendering of Potential Design
Anticipated Results
• Fish Passage• Flood Elevations• Future Segments
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Underwood Creek Project Menomonee Watershed
Objectives:Improve Fish PassageSustain Water ResourcesPart of a Sustainable Watershed Plan
Underwood Creek – Before Construction 2008
Underwood Creek – Typical Upstream (Phase 1) Segment
Rehabilitated Channel Phase I - Riffle Section
Rehabilitated Channel – Pool Section
Underwood Creek Phase I Construction - 2009
Underwood Creek Phase I Construction - 2009
Underwood Creek Phase I – Post Construction 2009
Pool
Riffle
Underwood Creek – Downstream (Phase 2)
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Questions?
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