SAGA OF A COASTAL LEVEE 1. VDD is Local Sponsor for the Federal - - PowerPoint PPT Presentation

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SAGA OF A COASTAL LEVEE 1. VDD is Local Sponsor for the Federal - - PowerPoint PPT Presentation

Aug 20, 2023 114 likes •594 views

SAGA OF A COASTAL LEVEE 1. VDD is Local Sponsor for the Federal Levee System including 44 miles of levees, pump stations, Tidal Gate and drainage structures. 2. USACE accepted the System into the Federal System post-Carla with a $42 million

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SAGA OF A COASTAL LEVEE

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  • 1. VDD is Local Sponsor for the Federal Levee

System including 44 miles of levees, pump stations, Tidal Gate and drainage structures.

  • 2. USACE accepted the System into the Federal

System post-Carla with a $42 million project.

3.

Levee condition/design has not changed and has been in compliance until standard changed post-Katrina in 2005.

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 Early 2000’s Congress Authorized NFIP Re-Mapping  2004/2005

FEMA Came to Brazoria County/District

 2005

KATRINA & RITA STORMS

 2006/2011 KATRINA Impact on USACE & FEMA

a) USACE-- More Stringent Standards b) FEMA – Certification or Levee Removed from Flood Maps

2006/2009 Drainage District Met With FEMA &

USACE

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2010/2014 District did the following:

a) Retained Consultant (Lobbyist) b) Made 5 trips to Washington, DC c) Authorized $4.5 Million To Evaluate Levee

Apr 2010 a) Authorized $1.5 Million To Evaluate Levee Mar 2011 a) FEMA Dropped “No Levee” Policy

b) FEMA Would Develop Model Based Risk Assessment

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 Fall 2011 USACE Continuing PL 84-99 Eligibility

Inspection

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 PL 84-99, Flood Control and Coastal Emergencies (33

U.S.C. 701n) (Guidance in ER 500-1-1)

 Allows Corps of Engineers to:  Provide disaster preparedness including coordination,

planning and training with local, state and federal agencies.

 Supplement State and Local entities in flood fighting  Rehabilitation of an eligible flood protection system  Federal systems are active in RIP upon completion  Non Federal systems become active in RIP after an

acceptable rating on an Initial Eligibility Inspection

 Continuing Eligibility Inspections conducted at

minimum every two years

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 Fall 2011 USACE Continuing PL 84-99 Eligibility

Inspection

 Nov 2011 USACE SWIF Program

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SWIF applies to levee systems that are active in the RIP

SWIF is available for local sponsors of a system that receives an unacceptable rating on a USACE inspection

SWIF allows the Local Sponsor to remain eligible for rehabilitation assistance while correcting unacceptable items.

Sponsor submits a Letter of Intent

Commitment of “significant” resources

SWIF addresses systems worst deficiencies first

2 year initial extension evaluated yearly for progress

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 Fall 2011 USACE Continuing PL 84-99 Eligibility

Inspection

 Nov 2011 USACE SWIF Program  Nov 2011 FEMA Surge Results Available

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Location of Cross Section

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 Fall 2011 USACE Continuing Eligibility Inspection  Nov 2011 USACE SWIF Program  Nov 2011 FEMA Surge Results Available  Dec 2011 District Notified FEMA We Could Not Certify  Feb 2012 FEMA Notified District of Wave Run Up

Results

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 Feb 2012 District Authorized $3.O Million Study

a) To Estimate Costs & Develop Time Line for Correcting Deficiencies. b) Determine Method of Funding c) Corrections Must be Acceptable to USACE and FEMA For Certification

 Apr 2012 District Authorized COULWAVE to check

FEMA Wave Run Up results.

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 Aug 2012 USACE Periodic Inspection  Oct 2012 Results of USACE Inspection

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The Freeport and Vicinity Levee System has been rated UNACCEPTABLE by the USACE. 

  • 1. Primary cause is shallow and deep slope

stability along with potential under seepage.

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Types of Slope Failures

Shallow Slope Failure Deep Slope Failure Levee Levee

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The Freeport and Vicinity Levee System has been rated UNACCEPTABLE by the USACE. 

  • 1. Primary cause is shallow and deep slope

stability along with potential under seepage. 

  • 2. Three I-Walls with questionable ability to

meet 100 year design storm loads. 

  • 3. Video documentation of concrete gate

structures. 

  • 4. Encroachments
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Aug 2012 USACE Periodic Inspection Oct 2012 Results of USACE Inspection Nov 2012 District Submitted SWIF Letter

  • f Intent.

Jan 2013 USACE Approved SWIF Letter Letter of Intent. USACE added Brazoria to Feasibility Study Aug 2013 Sold $6.4 Million Bonds Nov 2013 $80 Million Bond Election USACE RMC Risk Assessment

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  • 1. Must comply with USACE “Acceptable” rating
  • r fail to qualify for PL 84-99 Fed Funds in

case of major storm damage to levees.

  • 2. Must certify Levee System with FEMA to maintain

Zone X behind levees or risk some level

  • f BFE behind levee with increased flood

insurance cost.

  • 3. Significant restrictions on Industrial, Commercial &

Residential development.

  • 4. Long Term Increased Risk Behind Levees if we

do not fix the issues/deficiencies.

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 PUBLIC SAFETY IS NUMBER ONE PRIORITY  RISK IS GREATER THAN HISTORICAL ACCEPTANCE  RISK MANAGEMENT IS A SHARED RESPONSIBILITY  FLOODING WILL HAPPEN  RISK ASSOCIATED WITH STORMS WILL VARY  LEVEES REDUCE THE RISK OF FLOODING  ACTIONS TAKEN WILL SAVE LIVES AND PROPERTY

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  • 1. Armor one or both sides of 8 miles of

Barge Canal Levee.

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  • 1. Armor one or both sides of 8 miles of

Barge Canal Levee.

  • 2. Install Relief Wells as needed on

Barge Canal Levee.

  • 3. Decide on I-Wall fix, if needed,

after USACE completes analysis.

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CURRENT ESTIMATE FOR VDD IS $75-$80 MILLION USACE COST IS UNKOWN UNTIL SEVERAL STUDIES ARE COMPLETE INDUSTRY COST UNKNOWN

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THE ONLY FUNDING METHOD IS BONDS VOTED ON BY COMMUNITY VDD CALLED BOND ELECTION FOR NOVEMBER 2013 PASSED 86/14

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IF ENTIRE $80 MILLION IS USED ESTIMATED TAX WOULD BE $0.08/$100 EVALUATION $80/YEAR FOR $100,000 PROPERTY $160/YEAR FOR $200,000 PROPERTY

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EXEMPTIONS $100,000 $200,000 __________________________________________ NONE $80/YR $160/YR HOMESTEAD(20%) $64/YR $128/YR HS & OVER 65/DA ZERO $48/YR

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Seclusion Process in Brazoria County Texas

FEMA Region 6 September 18, 2013

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Status of Study

  • Preliminary Maps Basically Complete
  • Non-accredited Levees in County
  • Levee Analysis and Mapping Procedures (LAMP)
  • In response to congressional request
  • Procedures developed
  • Pilot LAMP Projects Initiated
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Seclusion

  • Process To Allow Flood Insurance Study to

Proceed While LAMP Process Completed

  • Current Data Shown In Areas Protected By

Levees

  • Current data used for insurance purposes
  • Note Placed in Levee Protected Area
  • Requires Concurrence of Impacted

Communities

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TO BE CONTINUED..

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THE ONLY FUNDING METHOD IS BONDS VOTED ON BY COMMUNITY VDD CALLED BOND ELECTION FOR NOVEMBER 2013

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THE ONLY FUNDING METHOD IS BONDS VOTED ON BY COMMUNITY VDD CALLED BOND ELECTION FOR NOVEMBER 2013 PASSED 86/14

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 Results of USACE Inspection

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 Results of USACE Inspection  Cost of Fix

a) District Cost b) Local Industry Cost c) Federal Funding (If, How Much and When?)

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 Results of USACE Inspection  Cost of Fix

a) District Cost b) Local Industry Cost c) Federal Funding (If, How Much and When?)

 Method of Funding

a) Bond Election (Amount & Timing) b) Federal Interest

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Sell $6.4 Million from ‘78 Bonds Authorize Engineering on Phase 1 Select Bond Advisory Committee Set November Bond Election Continue & Expand Pro-Active Strategy Continue Discussions with FEMA, COE, and Legislative Options

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 1. Shallow Slope Stability  2. Deep Slope Stability  3. Under Seepage  4. Potential I-Wall Stability  5. Encroachments

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