Shoreline Protection Research Update 5/29/13 Agenda Rockaway - - PowerPoint PPT Presentation

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Shoreline Protection Research Update 5/29/13 Agenda Rockaway - - PowerPoint PPT Presentation

Feb 23, 2024 443 likes •890 views

Rockaway Visioning and Shoreline Protection Research Update 5/29/13 Agenda Rockaway Visioning Process Community input regarding: Shoreline Protection Aesthetic and Community Concerns Economic Development and Concessions Recreation Shoreline

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Research Update

Rockaway Visioning and Shoreline Protection

5/29/13

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5/29/13

Agenda Rockaway Visioning Process Community input regarding: Shoreline Protection Aesthetic and Community Concerns Economic Development and Concessions Recreation Shoreline Protection Work Underway Survey of Protection Measures Next Steps

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Visioning Website

5/29/13

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Survey Results

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Shoreline Protection Recreation

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Economic Development and Concessions Aesthetic and Community Concerns Survey Results

5/29/13

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Storm Surge Barriers

5/29/13

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Eastern Scheldt Storm Surge Barrier, Netherlands 5.5 miles 10 year construction $4.6B $22M/year to operate

5/29/13

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Venice Storm Surge Barrier (MOSE), Flap Gate 5.5 miles Scheduled to complete in 2014 $6B 78 gates to protect 3 inlets

5/29/13

Source: WebUrbanist

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The Thames Barrier, UK 520 M wide Built 1974 - 82 €1.3B ($1.7B)

5/29/13

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Maeslantkering Storm Surge Barrier, Rotterdam, Netherlands 22M high and 210M long gates Construction 1991-97 €660M ($855M)

5/29/13

Source:CoastLearn

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Maeslantkering Storm Surge Barrier, Rotterdam, Netherlands

5/29/13

Source: Wikipedia

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The Bay Arc, San Francisco Not funded

5/29/13

Source: SOM Design

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Beach Nourishment and Groins

5/29/13

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Westerland and Sylt, Germany 60M wide dune €29.35M initial cost ($38M) €115,000 for regular replenishment ($150K)

5/29/13

Source: Nordsee.com

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Bondi Beach, Australia Initial replenishment of 12M CM @ $300M 10 year replenishment @ $4M

5/29/13

Source: Tourist Destinations.com

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Keta, Ghana

5/29/13

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Keta, Ghana $85M 10M CM of sand

5/29/13

Source: Baird.com

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5/29/13 Beach Protection, North Carolina

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Containment

5/29/13

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$3.6M Completed 2013 45,000 gal cistern Tuxford Green, Sun Valley, CA

5/29/13

Source: TreePeople

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Rotterdam Car Park, Netherlands Holds 2.6M gal Completed this year

5/29/13

Source: WaterWorld.com

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Tokyo Water Storage Tunnels Construction 1193-2006 $3B 4 miles long 5/29/13

Source: MegaStructure.com

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Deep Tunnel, Chicago Holds 2.3B gal $4B Filled 3 times in past 4 years

5/29/13

Source: Chicago Tribune

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Water Plaza, Netherlands Not yet constructed

5/29/13

Source: WaterWorld.com

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Water Plaza, Netherlands

5/29/13

Source: WaterWorld.com

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Floodwalls and Levees

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Typical Levee, Netherlands 27% of the Netherlands is below sea level

5/29/13

Source: ICS.UCI.EDU

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Zwakke Schakels, The Netherlands “Weak Link” Coastal Study Completed by 2015

5/29/13

Source:zuid.holland.nl

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Click to edit Master title style

  • Click to edit Master text styles

– Second level

  • Third level

– Fourth level » Fifth level

Scheveningen, Netherlands 1.9 km long (1.18 miles) 1 km new levee, 12 M above sea level 2.5M CM (over 88M CF) 40-70 M of beach width added €75M ($98M) 1100 days of construction 50-100 year protection

5/29/13

Source: mimoa.edu

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Scheveningen, Netherlands

5/29/13

Source: mimoa.edu

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Noordwijk, Netherlands 3 km long Dunes are 50M wide €18.2M ($23M) Protects against 10,000 year flood

5/29/13

Source: kustie.nl

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Noordwijk, Netherlands

5/29/13

Source:flyingpig.nl

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Double Dune Can be built to any height Could be built with interior seawall

5/29/13

Source: Walter Meyer, Local Office Landscape and Urban Design

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Ocean City, Maryland, Boardwalk and Sheet Pile Wall

5/29/13

Source: USACE

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Virginia Beach, Virginia, Boardwalk and Sheet Pile Wall

5/29/13

Source: USACE

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Virginia Beach, Virginia, Boardwalk and Sheet Pile Wall

5/29/13

Source: USACE

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Virginia Beach, Virginia, Boardwalk and Sheet Pile Wall

5/29/13

Source: USACE

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Virginia Beach, Virginia, Reinforced Dune

5/29/13

Source: USACE

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Elevations

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Beach 149th

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Beach 118th

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Beach 92nd

5/29/13

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Next Steps

5/29/13

Next Steps Early June The Special Initiative on Rebuilding and Resiliency report is released. Identifies the City’s response to climate change risks and plans for long-term rebuilding in hardest hit neighborhoods. July/August Phase 1 of the USACE beach replenishment starts at B87th to B149th. 600,000 CY of sand placed on beach. Summer/Fall 2013 Continuing community engagement to develop a proposal for shoreline line protection August/September Phase 2 of USACE beach replenishment from 19th to 149th begins. 3,500,000 CY of sand placed on beach. June 2015 USACE North Atlantic Coast Comprehensive Study of Flood Risk Reduction will be issued.