Preparing For The Rising Tide Designing with Water
Preparing For The Rising Tide • Published February 2013 • Maps Boston’s vulnerability to coastal flooding • Encourages property owners in today and tomorrow’s flood zone to know and decrease their risks
Designing with Water • Describes Dutch innovative resilient design • Provides design principles and case studies of beautiful flood control strategies relevant to Boston • Both available for free at www.tbha.org
Superstorm Sandy
Rt.12 Outer Banks
Casino Pier, Seaside Heights Photo: Reuters
Lower Manhattan
Breezy Point
Boston’s Waterfront, October 29, 2012
Why Coastal Flooding Happens • Storm surges and/or • “Wicked high tides” during full & new moons and/or • Sea level rise
Boston New York Storm Surges
Boston New York
100-, 500- and 1,000-year Surges New York City + Boston Harbor 12 Storm Surge (feet) 10 8 New York 6 City 4 Boston 2 Harbor 0 100 500 1000 Probability of Storm Surge (years)
Tides
Sea Level Rise • Used range of “likely” to “possible” estimated sea level rise for planning • 2050: 1-2 ft. increase • 2100: 3-6 ft. increase (US NCA, 2013) • Estimates keep going up, not down. Source: US National Climate Assessment, 2013
Today’s High Tide + 2.5 ft.
Today’s High Tide + 5.0 ft. Could flood Daily High Current Annual Tide by 2100 nearly 7% of 100-Year Flood by 2050 Boston Flood
Today’s High Tide + 5.0 ft.
What Floods at High Tide+5?
Today’s High Tide + 7.5 ft. Could Flood Annual 100-Year Over 30% Flood by Flood around of Boston 2100 2050
What Floods at High Tide + 7.5?
Boston Living With Water Design Competition • Launched October 29 th at the ABX conference after free design charrette. • Seeks Living with Water design solutions for three real sites in Boston. • Cosponsored by City, BRA, BSA and TBHA. • www.BostonLivingwithWater.org
Summary of Findings • Today’s 100 -year flood could be 2050’s annual flood and 2100’s high tide. • Boston will be different. It doesn’t have to be worse. • Preventing flood damage will cost money. Make it count by solving other problems at the same time.
Thank You www.tbha.org jwormser@tbha.org 617-482-1722 x102
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