Camille Manning-Broome - "Best Practices Manual for Development"

7/29/2019 Camille Manning-Broome - "Best Practices Manual for Development"

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Building Resiliency Workshop III

March 16, 2012

Camille Manning-Broome, Director of Planning

[email protected]


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THE BEST PRACTICES MANUAL FOR

DEVELOPMENT IN COASTAL LOUISIANA

Strategies that are appropriate to Louisianas unique geographies and cultures

Community scale tools and strategies

Building scale tools and techniques

Implementation through risk-reduction ordinances


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STRATEGIES IN COASTALLOUISIANA

Best Practices Manual for Development in Coastal Louisiana


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Coastal landscape higher land near river banks


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Over time, water levels have risen


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Roadways and settlement in the region clustered along riverbanks


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Water levels continue to rise and communities struggle to adapt


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Options include elevating.


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Elevating and fortifying


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And abandoning when absolutely necessary


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DEVELOPMENT NEAR WATER:

ELSEWHERE, USA


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LOUISIANAS COASTAL REGIONS


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DEVELOPMENT NEAR WATER:

SOUTHERN LOUISIANA


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TYING STRATEGIES TO THE GEOTYPES

Where is eachstrategy most

applicable?Key for connecting

strategies to Geotypes


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COMMUNITY SCALE STRATEGIES



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STRATEGIES FOR COMMUNITIES

Prevent flooding

Build levees; Sediment diversion; Strengthen borders of flood prone areas;

Armor and fill

Adapt to occasional flooding

Develop community-wide approaches that adapt to occasional floodwaters;Develop resiliency; Minimize property damage from flooding

Relocate when absolutely necessaryRelocate part or all of a community to a more stable area


21/45 Bosch Slabbers

Source: DeltaWorks.org

Bosch Slabbers

NetherlandsSeawall protecting against a storm surge

Sand Dunes(natural)

Prevent Flooding: Barriers


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Source: flickr.com/CLTS

Bangladesh

Retractable brick walls can be moved asnecessary to protect the community

Prevent Flooding: Barriers


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This aerial image illustrates the disparity between those who live inprotected upland communities and those who do not.

Avoid flooding

Adapt to flooding

Prevent Flooding


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Netherlands

CANALS allow for controlled flooding into pasture lands as needed

Adapt: Controlled Flooding


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Venice, Italy

Residents prepare for floodwaters

entering buildings and public spaces

Adapt: Accept Occasional Floodwaters


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Relocating part or all of a community away from flood danger

may be the best option in some scenarios

Cost to stay > cost to move

Use of temporary or low-cost structures

Seasonal or vacation inhabitation

Relocate

Mekong Delta, Vietnam:

As part of LIVING WITH FLOODS program, the Vietnamese

government has begun relocating flood-prone, high-riskcommunities to residential clusters on higher ground.

Po Delta, Italy

Abandoned fishing villages


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Isle de Jean Charles, Louisiana

Biloxi-Chitimacha-Choctaw tribe

Images: NOLA.com

After decades of frequent flooding, water

encroachment, and land subsidence, they faced the

painful decision of whether to stay or go.

Relocate


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BUILDING SCALE STRATEGIES



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Berm and armor

to protect structures and keep water out

Elevate with stilts or pole structureto move structures above floodwaters.

Flood proofing of buildingsso that they can be readily cleaned and returned to active use quickly.

Temporary structuresthat can be rebuilt with relative ease because of lower investment costs.

Floating structureseither permanently on the water or on land that can float when/if needed.

BUILDING SCALE STRATEGIES


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LOCAL ORDINANCEIMPLEMENTATION



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Focus on Flood Damage Prevention and

Stormwater Management & Natural

Resource Protection

Contains

Flood Damage Reduction

Stormwater Management

Parking and Site Access

Landscaping and Tree Preservation Borrow Pits

Outdoor Lighting

Outdoor Storage and Display

Signs

Natural Resource Protection


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ResidentialPublic Use


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Elevation Fortification


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APPLYING THE COASTAL TOOLKIT AND

MANUAL TOWN RESILIENCY PLAN


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Deltas are the best places to

live on earth if you can dealwith the water.

- Steven Slabbers

Documents

Camille Manning-Broome - "Best Practices Manual for Development"