Setback Levees: Hydraulic, Ecologic and Economic Benefits Tony Melone, PhD, PE, CFM 2011 ASFPM National Conference
Presentation Overview Levee setback concepts Multi-disciplinary approach: going beyond flood benefits Ecosystem services: putting $$ values to environmental enhancement Residual risk: planning for extreme events.
180 th to 200 th Street Levee Setback Study
Soldiers Home Levee Setback Improvement Project New Setback Levee Floodplain Reconnected to River
Levee Setback Concepts
Channelized River Channel
Levee Setback Corridor
Ecosystem Services
Ecosystem Benefits - Wetlands Value = $36,000 per acre per year
Ecosystem Benefits
Floodplain Inundation – 14,500 cfs
Floodplain Inundation – 22,600 cfs
Flood Damage
Avoided Annual Damage
Closing Statement Multi-disciplinary evaluation of levee options identifies the dollar value of benefits to a community: Flood protection benefits – Avoided damage losses Ecosystem service benefits