Resiliency Study (LaWRS) Shona Gibson February 27, 2017 1 - - PowerPoint PPT Presentation

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Resiliency Study (LaWRS) Shona Gibson February 27, 2017 1 - - PowerPoint PPT Presentation

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Louisiana Watershed Resiliency Study (LaWRS) Shona Gibson February 27, 2017 1 Background In response to flood events in 2016, watershed analysis and planning became a priority for state and local leaders Provide data and analysis to:

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Louisiana Watershed Resiliency Study (LaWRS)

Shona Gibson February 27, 2017

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Background

  • In response to flood events in 2016, watershed analysis and

planning became a priority for state and local leaders

  • Provide data and analysis to:
  • Aid state and local agencies in developing strategies by watershed
  • Inform Long Term Recovery Strategy and Planning on a Local and

Community level

  • Prioritize mitigation projects throughout the state
  • Compiling relevant date from variety of sources
  • Identify priority watersheds for mitigation projects and for potential

storm water management activities/modeling

  • Coordinate with State and Federal Agencies and local jurisdictions
  • Develop strategies to reduce risk and increase resiliency based on

needs of the state and other stakeholders

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Watershed assessments:

  • Provide data driven report and products to

aid state in developing strategy to develop funding strategy for federal grant funds.

  • Comprehensive evaluation of the conditions,

issues and unmet needs in areas affected by chronic, severe or episodic flooding.

  • Describes impacts on infrastructure

buildings, population on the river and its watershed.

  • Evaluates the past and ongoing impacts of

flood, storms and climate on people and neighborhoods to illustrate where watershed planning investments can prevent or reduce the disruption and cost of these natural events Watershed assessments are not:

  • Hydrological or Hydraulic assessment or

models on the watershed or any of it’s tributaries

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What is LaWRS?

  • A framework to make decisions and guide efforts to

protect and restore Louisiana watersheds

  • A list of “observations”
  • Focus on flood risk reduction and resilience
  • Emphasis on communities
  • Expanded outreach and community engagement

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Background Proposed Watersheds - 27

  • 17 watersheds affected in March flooding (DR-4263-LA)
  • 15 watersheds affected in August flooding (DR-4277-LA)
  • 27 unique watersheds affected; 5 watersheds affected

in both events

  • USGS flood extents & depth grids used for analysis in

March flooding

  • Region VI’s flood extents & depth grids used for analysis

in August flooding

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4 - Population

Louisiana (2010 Census, Act) Louisiana (2016 Est.) 4.53 mil 4.68 mil Watersheds – 27 (2010 Census) 3.20 mil (68.4%) Top 5

  • Amite

568.9K

  • Vermilion

365.3K

  • Bayou Teche

227.2K

  • Liberty Bayou-Tchefuncte

207.4K

  • Bayou Pierre

192.7K 1.56 mil (48.8%)

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Background Flooded Structures

Use Inside SFHA Outside SFHA Total %

4263 4277 4263 4277

Residential 12,099 61,670 18,897 39,048 131,714 91.07% Non- Residential 1,226 6,637 1,920 3,138 12,921 8.93% Total 13,325 68,307 20,817 42,186 144,635 100%

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SFHA Depth 4263 4277

In 0 – 1 ft. 4,798 17,113 1-3 ft. 5,889 26,015 > 3 ft. 2,638 25,179 Subtotal

13,325 68,307

Out 0 - 1 ft. 11,104 24,640 1 – 3 ft. 7,499 14,690 > 3 ft. 2,214 2,856 Subtotal

20,817 42,186

TOTAL 34,142 110,493

Background Flooded Structures

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Stakeholders

OCD

Planning Team

EPA DOTD GOHSEP CPRA USACE (NO)

Office of Cyber Infra- strucure Analysis (OCIA)

EPA USDA NOAA USACE (other

districts)

  • Dept. of

Interior FEMA

Primary Secondary

Outreach

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DHS

(Office of Infra- structure Protection)

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Authorities

Watersheds 27 Sub-Watersheds 668 Parishes 53 Other Jurisdictions 211 Levee Districts 10 USACE Districts 4 Planning Commissions 8

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Framework Process

1. A “Framework” (Criteria) was determined The Framework items were rated by importance 2. This Framework was presented to GOHSEP for input on priorities 3. From this input, “Primary” and “Secondary” framework groups were established 4. Each framework is being assessed on:

  • What will be displayed (GIS product, charts, narrative, table, etc.)
  • Components
  • Reference/source (when and where the information was derived)
  • Rationale (what is important and how it benefits the stakeholder)
  • Answer the question, “So What?”

5. Prototype products are being vetted by GOHSEP

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Process Framework

Primary

  • % Of Structures Impacted
  • Land Cover Changes
  • Upstream Watersheds
  • Population
  • NFIP Claims
  • IA Applicants
  • Levee/Dams/Flood Control
  • Transportation
  • Channel Conditions
  • H&H Analysis
  • Critical Facilities
  • %of WS in Floodplain
  • Previous Disaster Grants (404 & CDBG)
  • Non-Disaster Grant Funding

Secondary

  • Emergency Facilities
  • Geology/Topography
  • Wetlands
  • Water Quality/EPA/Water Wells
  • Economics
  • Endangered Species
  • Soils
  • Energy Infrastructure
  • Parks and Recreation
  • Historic Places/Districts
  • Tribal Lands
  • Climate and Precipitation
  • Income Census
  • Building Codes/Freeboard

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Geospatial Products

  • A list of geo-products was developed based on the

framework criteria. Prototype products are developed for each framework criteria.

  • GOHSEP approves prototype products which are

batched out to GIS assets, to produce products for the balance of the watersheds.

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GIS Product Lists

Louisiana Watershed Resiliency Study (LaWRS)

TM 1 = JH

GIS Product Lists as of: 170223

TM 2 = CC

Description Reqd Compl Bal % Comp Comments Res. TM 1 Watershed/Subwatershed 28 28 100.0% Exhibit 4 , Dupage HH SR 2 Snapshot 27 27 100.0% Adj Claims as reqd DA/CD SR 3 % of Structures Impacted 60 30 30 50.0% HH 2 4 Land Use Changes 27 27 0.0% 2 5 Existing Master Plans/Community Plans 0.0% 2 6 Upstream Wetlands 4 4 0.0% 2 7 Population 0.0% Snapshot DA 2 8 NFIP Claims 4263 18 18 0.0% 2 8 NFIP Claims 4277 16 16 0.0% 2 8 IA Registrations 4263 18 18 0.0% 2 8 IA Registrations 4277 16 16 0.0% 2 9 Levees / Dams / Flood Control Structuces 27 27 100.0% 2 10 Transportation Network 27 27 100.0% 2 11 Channel Conditions 27 27 0.0% Divided in Cats. 2 12 H&H Studies 27 27 0.0% 1 13 Critical Facilities 27 27 100.0% 2 14 Emergency Facilities 27 27 100.0% DA 2 15 % of Floodplain/Flooding 27 27 100.0% 1 15 Social Vulnerability Index 27 27 100.0% 1 16 Previous 404 2 1 1 50.0% DA 1 17 Non-Disaster Grants/Other Agency Grants 2 2 0.0% DA 1 19 Geology/Topography 28 1 27 3.6% 1 20 Wetlands 27 27 100.0% 1 21 Water Quality / EPA / Wells 27 27 0.0% 2 22 Economics 0.0% DA 2 23 Endangerd Species 1 1 100.0% 1 24 Soils 27 27 100.0% 1 25 Energy Infrastructure 27 27 0.0% DA 1 26 Pipeline (Petroleum) 1 1 0.0% DA 1 27 Wells (Petroleum) 1 1 0.0% DA 1 28 Parks & Recreation 27 27 100.0% 1 29 Climates and Precipitation 2 2 100.0% HH 1 30 Building Codes / Free Board 0.0% 2 31 Census 0.0% 2

602 333 269 55.3%

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GIS Products

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GIS Products

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GIS Products

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2 weeks 2 weeks 2 weeks 2 weeks

Finish Analyze Develop Review Gathering Organize Report Report Data Data

Phased Development

Proposed Timeline

Phase I Data Collection Phase II Task / Deliverables Phase III Planning for Implementation

`

February March April

2016 2017

December January February March

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February March

April 2 weeks 2 weeks 2 weeks 2 weeks 2 weeks

Complete Analyze Developing Review Report Gathering Organize Report Report Data Data February March

2 weeks 2 weeks 2 weeks 2 weeks

Complete Analyze Developing Review Gathering Organize Report Report Data Data

Phased Development

Proposed Timeline

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Outreach

  • Acadiana Planning Commission (2/6)
  • USACE (ONGOING)
  • Red River Valley Association (2/14)
  • CPRA Briefing – 2017 Louisiana’s comprehensive Master Plan for a Sustainable

Coast (2/20)

  • USGS – Brief on DR-4277 Report Results (2/21)
  • NOAA – C-Cap Land Use & Land Change for 18/27 Watersheds (1/21)
  • EPA Outreached to FEMA
  • LaDOTD - For future projects
  • FEMA Region VI – Federal Accreditation Status Tracker
  • Flood Provisions of the International Codes and ASCE 24 (6 workshops, 6

locations, over 400 attendees, 2/7-14)

  • Office of Cyber Infrastructure Analysis (02/26)
  • Capital Area Planning Commission—TBD
  • OEP Directors – (3/13)

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Outreach/Engagement Strategy

(Under Development)

Visual Resource to Display

  • Research
  • Observations

FEMA’s Geo Platform

  • Stake Holders
  • Parishes
  • Municipalities
  • Planners
  • Floodplain Managers

Viewer Map Journal Story Map (ARCGIS) Survey

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Outreach

Community Survey

FOR:

  • Parishes
  • Incorporated Communities

Communities to Input Specific Data

MAP JOURNAL (GEO PLATFORM)

  • House the Data to Access
  • Accessible For all Jurisdictions
  • Jurisdictions
  • Planning & Districts
  • State

STORY MAP

Public Outreach Tool

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Survey Form

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What we need

Significant and useful input from local communities, planning districts, levee districts, River Basins, etc. is key to formulate a complete assessment. Input desired:

  • Areas that flood
  • Known nuisance flooding
  • Poor or insufficient drainage issues
  • Flooding Sources that may need updated engineering

and Floodplain Mapping

  • Planned Drainage Projects
  • Channel Conditions
  • Zoning/Land use plans
  • Infrastructure Plans
  • Storm water management practices
  • H&H Studies

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Outcomes

Watershed assessment will help describe:

  • Structure and infrastructure impacts from recent

flood events

  • Flooding
  • Unmet needs
  • Resilient features
  • Impairment
  • Significant natural areas, storage areas, and

wetlands

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Outcomes Cont.

Watershed Assessment can help identify:

  • Funding Priorities for Federal Disaster Recovery

Funds

  • Mitigation Actions
  • Flood resilience actions for most impacted/most

distressed areas

  • Long Term Recovery strategy and priorities
  • Structural and non structural water quality

improvements

  • The need/desire to update floodplain maps

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Decision Drivers

  • Reducing risks:
  • Life
  • Property
  • Resilience
  • Individual
  • Community
  • Sustainable communities
  • Economic growth
  • Regional storm water management / planning

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Tomorrow’s Floodplain is here TODAY!

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Questions?

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