Jaime Ramiro Diaz - US EPA...LSU Coastal Sustainability Studio Bright Moments. Arcadis Deltares...

LIVING WATER, BUOYANT LAND

Jaime Ramiro DiazWaggonner & Ball Architects

2013 Smart Growth SummitH20 Overview: How to Learn from the New Orleans Urban Waters Partnership

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Katrina

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Katrina

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1953 Flood

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Post Katrina Planning Timeline

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Dutch Dialogues

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Dutch Dialogues

W O R K S H O P N E W O R L E A N S - O C T O B E R 1 0 / 1 3 2 0 0 8• 10 •

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Planning Approach

Inhabitation Land Cover

Infrastructure Networks

SoilsWater Biodiversity

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System Modeling: Proposed Water System

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Combining Good Ideas

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Dutch Dialogues

Rotterdam

New York

Jakarta

London

New Orleans

Hong Kong

Tokyo

Ho Chi Minh City

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September 2013

Waggonner & Ball Architects

Vision

Greater New OrleansUrban Water Plan

Team & Partners

Manning Architects

Dana Brown Landscape Architects

FutureProof

CDM Smith

Nelson Engineers

Dewberry

GCR

Eustis Engineering

Sherwood Design Engineers

Tulane University

LSU Coastal Sustainability Studio

Bright Moments

Arcadis

Deltares

Royal Haskoning

City of Rotterdam

City of Amsterdam

H+N+S Landscape Architects

Bosch Slabbers Landscape Architects

Robbert de Koning Landscape Architect

Palmbout Urban Landscapes

Technical University Delft

Waggonner & Ball ArchitectsWaggonner & Ball Architects

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Living in a Basin

Metro Basin

Orleans East Basin St. Bernard Basin

Adaptation will be second nature, as the region, the place which President Jefferson referred to as the “Island of New Orleans,” becomes a true delta city.

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Problems

1. Flooding

2. Subsidence

3. Water Assets Wasted

URBAN WATER FLOWS

System Overwhelmed

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Problems: 10 Year Storm Modeled Flooding

Estimated Damages Due to Flooding Over Next Fifty Years: $7.99 Billion

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Problems

1. Flooding

2. Subsidence

3. Water Assets Wasted

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Effects of Pumping

1895

Today

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Problems

Estimated Damages Due to SubsidenceOver Next Fifty Years: $2.19 Billion

High Subsidence Potential

Moderate Subsidence Potential

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Problems

1. Flooding

2. Subsidence

3. Water Assets Wasted

LIVING WATER, BUOYANT LAND

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Opportunities

1. Improved Safety

2. Economic Vitality

3. Enhanced Quality of Life

LIVING WATER, BUOYANT LAND

Opportunities

1. Improved Safety

2. Economic Vitality

3. Enhanced Quality of Life

LIVING WATER, BUOYANT LAND

Opportunities

1. Improved Safety

2. Economic Vitality

3. Enhanced Quality of Life

Proposed Stormwater FlowsA storage-based system that works with natural features

System scale water storage

Small scale strategies to slow water

Split at the ridge waterworks 5 miles

Stormwater Proposals

98 98 Greater New Orleans Urban Water PlanAdapting the Flow

Living Water System

System Components Green Streets, Circulating Canals, Parklands, and Waterfronts

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System Modeling: Proposed Water System

BUILDING THE WATER CITY

Smart Retrofits

1 Inspire 2 Act 3 Achieve

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Regional Costs vs. Benefits Over Fifty Years

52 Building Value

Economic Impact and Job Creation

53Greater New Orleans Urban Water Plan

The Urban Water Plan introduces a new industry, creating jobs in the design, construction, and maintenance of stormwater management practices. In addition to the wages paid to individual workers, these new jobs create an economic benefit to society in expanding the tax base and reducing poverty-related costs. Intensive implementation of the plan would create up to 101,790 direct and indirect jobs (full and part-time) over the next 50 years and have a regional economic impact of $11.3 Billion.

$11.3 Billion

Reduced Flooding Cost

Common two-year, five-year, and ten-year storm events in the New Orleans area (with 50%, 20%, and 10% chance of occurring each year, respectively) impose an economic drain on local businesses and property owners. Beyond the structural damage and lost worker productivity, these flood events, over 50 years, produce approximately 600,000 tons of debris and leave over 270,000 households in need of temporary shelter.

$8.0 Billion

Reduced Subsidence Cost

By actively managing the region’s groundwater levels, the Plan minimizes land subsidence, thereby reducing damage to structures and infrastructure, including levee improvement costs. Only costs associated with building structural damage are presented here. Infrastructure costs due to subsidence, such as damage to streets, sidewalks, utilities, etc, which are not quantified within the scope of this project, will be significantly higher.

$2.2 Billion

Lower Flood Insurance Premiums

The National Flood Insurance Program allows cities and counties to earn discounts on flood insurance premiums for their residents through the Community Rating System. The CRS awards points to communities that implement technical solutions and outreach campaigns that mitigate flood risk. Analysis of the credits currently earned by Orleans and Jefferson Parish communities, and the range of credits available, reveals that there is potential for significant savings in all three parishes.

$609 Million

Increased Property Values

By investing in new open canals, storage areas and green space, the Urban Water Plan stands to have a positive impact on property values and new investment. Over 41,500 properties lie within 200 meters of a proposed intervention or improvement. Using assessed values for these parcels, it is estimated that with intensive implementation, property values would increase by $183 million.

$183 Million

>$22.3 Billion

=Total Economic Benefit

+

+

+

EEconomic Impact& Job Creation

Reduced Cost ofFlood Damages

Reduced Cost ofSubsidence Damage

ImprovedInsurability

IncreasedProperty Values

51%

1%2%

10%

36%

Quantitative Benefit Ratios

0

5

10

6.2

22.3

15

20

Slow

Store

Drain

IncreasedProperty Values

ImprovedInsurability

Reduced Damagesdue to Subsidence

Reduced Damagesdue to Flooding

Economic Impact& Job Creation

Urban Water PlanLong-Term Cost

50 YearBenefit

Billi

ons

($)

Plan Costs vs. Benefits

+

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Regional Plan

Lake Pontchartrain

Lake Borgne

West Bank

Jefferson Parish

New Orleans

New Orleans East

St. Bernard

Gulf of Mexico

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1

6

2

3

4

79

9

9

10

11 12

1. Lafitte Blueway

2. Orleans Avenue Canal

3. Bayou St. John

4. London Avenue Canal

5. Filmore (Gentilly)

6. Claiborne Corridor

7. Desire Parklands

8. Inner Harbor Navigation Canal

9. Uptown Streets

10. Palmetto Canal

11. Hollygrove & the Monticello Canal

12. Lakeview

5

6

11

Orleans Basin

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Uptown to Bucktown: Redirect Upslope Drainage

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Streets

Uptown to Bucktown: Interceptor Streets

Uptown to Bucktown: Interceptor Streets

Lafitte Blueway: Historic Water Identity

Lafitte Blueway: Basin Street

Circulating System

Lafitte Blueway: Bayou Cascade

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Lafitte Blueway: Drainage Impact

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Lafitte Blueway

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Lafitte Blueway

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Lafitte Blueway

Mirabeau Water Garden

Mirabeau Water Garden

Mirabeau Water Garden

140 acres CAPTURED RUNOFF

DIRECT

SECONDARY

745 acres IMPROVED FLOW

PUMP STATION #4

FREN

CH Q

UART

ER

PUMP STATION #3

PUMP STATION #17

PUMP STATION #19

L A K E P O N T C H A R T R A I N

LAKEFRONT PUMP STATION (INTERIM)

LON

DO

N AVEN

UE CAN

AL

INDU

STRIAL CANAL

BAYO

U S

T. J

OH

N

This area drains through two main pipes under Mirabeau and Owens Blvds, which can be diverted into the site

Retention upstream allows drainage in this area to flow more efficiently to Pump Station #4

Reduced volume at Pump Station #4 benefits the entire Gentilly area

2,900 acres INCREASED PUMP CAPACITY

Less water entering the London Avenue Canal at Pump Station #4 makes pumping at Station #3 more effective

LOWERED CANAL WALLS6,115 acres

(London Avenue Canal watershed)

BENEFITS

25 acres RETENTION AND STORAGECSJ + adjacent vacant properties developed into water storage

M I S S I S S I P P I R I V E R

3,785 acres

6,115 acres

TOTAL 9,900 acres

Noise barriers

Railroads

Underpass

Filled canals

Ridges

Pumping Stations

Highways & Interstates: On grade

Hydrologic Boundaries

Highways & Interstates: Elevated

Existing Drainage Catchment Areas

LLT Properties

New Orleans Blighted Properties

Parks

Agriculture

Woodland

Recreation and Nature Preserves

District Boundaries

Basin Boundaries

LEGEND

N

1 mi

Forebay

Municipal

Drainage

Pump

Fi l t rat ion Terraces

Publ ic Access

Cypress

Forest

Swimming

PoolWil lo

w GroveLi l l ie

s

Grasses

Mirabeau Water Garden

LIGHT RAIN EVENTDRY CONDITION EXTREME RAIN EVENTAVERAGE RAIN EVENT

Mirabeau Water Garden

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