Notes
Slide Show
Outline
1
Floodplain Management
  • Executive Committee Meeting
  • May 7, 2004
2
Agenda
  • Introductions (20 minutes)
    • Joe duMenil – Co-Chair
    • David Stolpa – Co-Chair
  • Opening Comments (10 Minutes)
    • Jerry Hodge
    • David Stolpa


3
Agenda
  • Discussion Points (30 minutes)
    • Communication – Joe duMenil
    • Education – Jerry Hodge/Roy Sedwick
    • Procedures – Nancy Cline/Mike Howard
    • Technical – John Robertson
  • Break (15 minutes)
4
Agenda
  • Case Presentations and Discussion    (120 minutes)
    • Break (15 Minutes)
  • Next Steps (45 minutes)
    • Confirm commitment to stated goal
    • Identification of appropriate stakeholders
    • Develop agenda for next meeting
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Introductions
6
Opening Comments
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Discussion Points
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Communication
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Communication
  • Open dialog about the project development process for TxDOT projects
  • Identify points along the project development timeline when communication is critical
  • Is communication one way?
  • Is communication top down?
  • Who is responsible for initiating communication?
  • Benefits of a targeted communication plan
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Education
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Education
  • TFMA is committed to providing education to TxDOT hydraulic engineers and other staff on NFIP floodplain management
  • TFMA is offering free membership – 6 TxDOT staff members statewide
    • 4 are C.F.M.
12
Education
  • TFMA is coordinating with TxDOT Districts to bring FEMA 4 ½ day Floodplain Administrator Training to them
    • Two courses are set
      • July 12-16, 2004 – Laredo
      • November 15-19, 2004 – Lufkin

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Education
  • 15 slots reserved for TxDOT staff in each class
  • More classes will be scheduled in 2005
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Procedures
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TEXAS COMMISSION ON ENVIRONMENTAL QUALITY
  • NFIP STATE COORDINATING AGENCY
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NATIONAL FLOOD INSURANCE PROGRAM


  • 1968   A voluntary program based on a mutual agreement between the federal government and local communities
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NATIONAL FLOOD INSURANCE PROGRAM


  • In exchange for adopting and enforcing a floodplain management ordinance, federally backed flood insurance is made available to property owners throughout the community.
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HB 1018 / §16.3145 TWC

  •    “The governing body of each city and county shall adopt ordinances or orders, as appropriate, necessary for the city or county to be eligible to participate in the National Flood Insurance Program.”
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LOCAL FLOODPLAIN MANAGEMENT
  • ORDINANCE / COURT ORDER
    • Authority
    • Definitions
    • Establishes Permitting System
    • Establishes Basis for Elevations
    • Provides for Penalty / Enforcement


    • (pertains to all development with the community)
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FEMA ACTIONS FOR
NON- COMPLIANCE


  • PROBATION


  • SUSPENSION
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IMPLICATIONS
  • NO FLOOD INSURANCE


  • Home Loans – Federal loans would not be available in designated floodprone areas and loans secured by flood insurance could be called due.


  • Disaster Assistance – Disaster funding is limited.
  • (SBA and Individual Assistance)
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DEALING WITH STATE SOVEREIGNTY
  • Memoranda of Understanding
  • - Initiate interaction between state and local government
  • - Evaluate flooding problems when developing
  • - Compliance with FEMA minimums
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ISSUE FOR PARTICIPATING  COMMUNITIES
  • If all development (including local, state and federal) is not in compliance with local NFIP regulations, the community’s citizens are at risk of loosing their flood insurance!
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Technical
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Case Presentations and Discussion
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Case 1 – Using old FIRMs
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Floodplain Changes
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Why are the Floodplain Maps being updated?
  • Current FEMA maps are based on outdated models
  • The updated model is based on current conditions and parameters that comply with the current Development Codes
  • More complete data (i.e. more detailed topography, updated land use, recorded major storm events that can be used to calibrate the updated model)


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Floodplain Changes
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Case 2 – Local vs. state design criteria (storm drain)
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Case 3 – Local vs. state design criteria (riverine)
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Riverine
  • TxDOT project encroaches in 100-year floodplain
  • Downstream of two flood retarding dams considered to be hydraulically inadequate IAW TCEQ Chapter 299 Rules (1986)


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Riverine
  • Both dams classified as high hazard
    • Required to pass PMF
    • Neither dam meets this requirement
  • Local floodplain ordinance requires breach analysis for PMF
    • Peak discharge as result of 24-hour rainfall using ultimate watershed development
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Riverine
  • Local ordinance requires a floodplain development permit for all development in flood hazard zones
  • TxDOT consultant uses outdated hydraulic studies
    • Top of road elevations
    • Culver and bridge crossings
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Riverine
  • Issues
    • Revised hydrologic and hydraulic studies
    • Floodplain development permit
    • Dam breach analysis


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Case 4 – Map maintenance
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Case 5 – Benefits to cost analysis/risk assessment
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Next Steps