analysis and overview of existing navigation and coastal ...€¦ · analysis and overview of...
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US Army Corps of EngineersBUILDING STRONG®
Analysis and Overview of Existing Navigation and Coastal Engineering With Nature ProjectsThomas J. Fredette, PhDResearch Biologist, Environmental LaboratoryEngineer Research and Development Center
andBurton C. Suedel, PhDCynthia J. BanksAustin V. Davis
DefinitionEngineering With Nature is the intentional alignment of natural and engineering processes to efficiently and sustainably deliver economic, environmental and social benefits through collaborative processes.
EWN Poster ChildThe Chevron
1899 1940s 1969
1880
Historical River TrainingMethodology
Chevrons as Alternative to Dike Extensions
Notched Chevron River Flow and Sediment Bed
Behavior
Center section of chevron at lower
elevation (e.g., notched)
Opportunities/Existing Examples?
Identify ExamplesCollect Documentation
Evaluate Against Criteria
Criteria EWNExtent to which the project produces and makes use of efficiencies to contribute to sustainable delivery of project benefits, including consideration of how the project function is sustainable in the broader systematic context (e.g., regional watershed or sediment systems).
Extent to which natural processes are used to produce benefits and outcomes.
Extent to which the project and its configuration broaden the base of benefits provided (economic, social, and environmental).• Extent to which the added benefits are incorporated in association with (but not as mitigation for) construction or maintenance of civil works infrastructure Extent to which the project makes use of collaborative processes to organize and focus interests, stakeholders, and partners.
Comparison of Environmental Projects
Reef Habitat Breakwaters, Pensacola, FL
Cobble Mounds
South Bay MarinaSouth Bay Marina, Green Bay, MI
• Spur jetties to create marsh and protected shallows. • Fish spawning stones incorporated into design.
Spur Jetties
http://www.seagrant.wisc.edu/Home/Topics/HabitatsandEcosystems/Details.aspx?PostID=552
Tern Nesting HabitatNew York Power Authority – Buffalo, NY
NYPA Tern
Nesting Habitat
See http://niagara.nypa.gov/EcologicalStandingCommittee/EcoStanddefault.htm
0
200
400
600
800
1,000
1,200
1,400
1,600
1,800
2,000
2004 2005 2006 2007 2008 2009 2010 2011
Num
ber o
f Ter
n N
ests
Year
Buffalo Harbor Breakwaters Tern Nests
First Large Scale Breakwater Habitat Area Developed
East River Osprey Nest Platform,
Buffalo, NY
New York Power Authority
http://niagara.nypa.gov/EcologicalStandingCommittee/EcoStanddefault.htm
Seattle, WA Seawall Studyhttps://sites.google.com/a/uw.edu/seattle-seawall-project/home
3 panel designs, each with 2 surface treatments; plus Reference and Control
Clay St.
Vine St.
Aquarium
3 Sites
EWN Data Viewer
EWN Products
http://el.erdc.usace.army.mil/elpubs/pdf/trel11-
07.pdf
http://el.erdc.usace.army.mil/elpubs/pdf/doerr16.
EWN-Related GLRI Products
http://el.erdc.usace.army.mil/dots/doer/pdf/GLGB-Booklet.pdfhttp://el.erdc.usace.army.mil/dots/doer/pdf/InlandPort-
USACEEnvSustainability.pdf