national nonstructural/ flood proofing committee national nonstructural/ flood proofing committee

National Nonstructural/Flood Proofing Committee

National Nonstructural/Flood Proofing Committee

Nonstructural Measures for Flood Risk Management and Policy, Guidance, and Law

Nonstructural Measures for Flood Risk Management and Policy, Guidance, and Law

6 August 2009

Buffalo DistrictPlanning Conference

Kenneth Zwickl, HQLarry Buss, Omaha DistrictGene Barr, Huntington DistrictClark Frentzen, South Pacific DivisionJoseph Remondini, Tulsa DistrictStuart Davis, Institute for Water ResearchRandall Behm, Omaha DistrictMark Harberg, Fort Worth District Kim Gavigan, Los Angeles DistrictSteve O’Leary, Huntington District Keven Lovetro, New Orleans DistrictCarol Holloway, Institute for Water Research

Kenneth Zwickl, HQLarry Buss, Omaha DistrictGene Barr, Huntington DistrictClark Frentzen, South Pacific DivisionJoseph Remondini, Tulsa DistrictStuart Davis, Institute for Water ResearchRandall Behm, Omaha DistrictMark Harberg, Fort Worth District Kim Gavigan, Los Angeles DistrictSteve O’Leary, Huntington District Keven Lovetro, New Orleans DistrictCarol Holloway, Institute for Water Research

MissionMissionFlood Proofing

Nonstructural

Flood Proofing

Nonstructural

DefinitionsDefinitions

Nonstructural

Structural

National Nonstructural Flood Proofing Committee

National Nonstructural Flood Proofing Committee

Nonstructural Mitigation Measures

Nonstructural Mitigation Measures

Nonstructural Mitigation MeasuresNonstructural Mitigation Measures

Elevation

Relocation

Floodwalls, Levees & Berms

Buyout/Acquisition

Dry Flood Proofing

Wet Flood Proofing

Flooding Warning/Preparedness

National Flood Insurance Program

Elevation

Relocation

Floodwalls, Levees & Berms

Buyout/Acquisition

Dry Flood Proofing

Wet Flood Proofing



Elevating on Extended Foundation Walls

Elevating on Extended Foundation Walls

Elevating on FillElevating on Fill

Elevating on Piers, Posts, Piles... Elevating on Piers, Posts, Piles...

… or Columns… or Columns

Elevation on Piers, Posts, Piles, or ColumnsElevation on Piers, Posts, Piles, or Columns

Piers

Piers

PilesPiles ColumnsColumns

PostsPosts


Elevation

Relocation

Floodwalls, Levees and Berms

Buyout/Acquisition

Dry Flood Proofing

Wet Flood Proofing



Elevation

Relocation


Buyout/Acquisition

Dry Flood Proofing

Wet Flood Proofing



Relocation Process Relocation Process

Evacuate temporary roadway

Attach structure to trailer

Transport structure to new site

Evacuate temporary roadway

Attach structure to trailer

Transport structure to new site

Moving the StructureMoving the StructureMoving the StructureMoving the Structure

Relocation Process Relocation Process

Demolish and remove foundation and pavement

Disconnect and remove all utilities

Grading and site stabilization

Demolish and remove foundation and pavement

Disconnect and remove all utilities

Grading and site stabilization

Restoration of Old SiteRestoration of Old SiteRestoration of Old SiteRestoration of Old Site


Elevation

Relocation


Buyout/Acquisition

Dry Flood Proofing

Wet Flood Proofing



Elevation

Relocation


Buyout/Acquisition

Dry Flood Proofing

Wet Flood Proofing



Construction BarriersBerms, Levees and

Floodwalls

Construction BarriersBerms, Levees and

Floodwalls

Sump and pump for internal drainage

Sump and pump for internal drainage

FloodwallFloodwall

Berm or Levee

Berm or Levee

One-way valveOne-way valve

SewerSewer

Three Foot Earthen LeveeThree Foot Earthen Levee

Flood Protection with FloodwallsFlood Protection with Floodwalls

FloodwallFloodwall

Nonstructural Mitigation MeasuresNonstructural Mitigation Measures Elevation

Relocation


Buyout/Acquisition

Dry Flood Proofing

Wet Flood Proofing



Elevation

Relocation


Buyout/Acquisition

Dry Flood Proofing

Wet Flood Proofing



Basic AcquisitionBasic Acquisition

Acquire land and structures

Demolish structures

Easiest type of acquisition

Acquire land and structures

Demolish structures

Easiest type of acquisition


Elevation

Relocation


Buyout/Acquisition

Dry Flood Proofing

Wet Flood Proofing



Elevation

Relocation


Buyout/Acquisition

Dry Flood Proofing

Wet Flood Proofing



One-Way ValveOne-Way Valve

Dry FloodproofingDry FloodproofingMaximum ProtectionLevel is Three Feet

Maximum ProtectionLevel is Three Feet

Flood Proofed WallsFlood Proofed Walls

Closures for OpeningsClosures for Openings

SewerSewer

Existing footing

Existing footing Drill and grout

reinforced connection to existing footing

Drill and grout reinforced connection to existing footing

Drain to sump pump with backup power sourceDrain to sump pump with backup power source

Add concrete footing

Add concrete footing

WaterproofingWaterproofing

New BrickNew Brick

CapCap

Existing brick veneerExisting brick veneer SheathingSheathing

Wood frame or CMU block wallWood frame or CMU block wall

Metal fasteners tie in new brick to old brick

Metal fasteners tie in new brick to old brick

Dry Flood Proofing MethodsDry Flood Proofing Methods

SealantSealant

Waterproof SealantWaterproof Sealant

Dry Flood Proofing MethodsDry Flood Proofing Methods

VeneerVeneer

SealantSealant

Waterproof SealantWaterproof Sealant

Baseboard

Baseboard

TrenchTrench

Impervious MembraneImpervious Membrane

2 feet of water in back of house2 feet of water in back of house


Elevation

Relocation


Buyout/Acquisition

Dry Flood Proofing

Wet Flood Proofing



Elevation

Relocation


Buyout/Acquisition

Dry Flood Proofing

Wet Flood Proofing



Wet Flood ProofingWet Flood Proofing

Opening to LetWater In

Opening to LetWater In

Furnace and UtilitiesRelocated

Furnace and UtilitiesRelocated

Appliances Moved or Wrappedin Waterproof Bags

Appliances Moved or Wrappedin Waterproof Bags

Elevate Utilities

Elevate Utilities


Wet Flood ProofingWet Flood Proofing Elevate Utilities Elevate Utilities


LouvreLouvre

Let Water InLet Water In


Elevation

Relocation


Buyout/Acquisition

Dry Flood Proofing

Wet Flood Proofing



Elevation

Relocation


Buyout/Acquisition

Dry Flood Proofing

Wet Flood Proofing



Flood Warning/Preparedness Components

Flood Warning/Preparedness Components

Flood Threat Recognition System

Warning Dissemination

Emergency Response

Post-Flood Recovery

Continued Plan Management

Flood Threat Recognition System

Warning Dissemination

Emergency Response

Post-Flood Recovery

Continued Plan Management

Flood Warning/Preparedness ComponentsFlood Warning/Preparedness Components

Collection of information

Transmission of Information

Receipt of information

Organization/Display of information

Prediction or timing and magnitude of flood event

Collection of information

Transmission of Information

Receipt of information

Organization/Display of information

Prediction or timing and magnitude of flood event

Flood Threat Recognition SystemFlood Threat Recognition System

Determine affected areas

Identify affected parties

Prepare warning message

Distribute warning message

Determine affected areas

Identify affected parties

Prepare warning message

Distribute warning message

Warning DisseminationWarning DisseminationFlood Warning/Preparedness ComponentsFlood Warning/Preparedness Components

Temporary evacuation Search and rescue Mass care

center operations

Public property protection

Flood fight Maintenance of vital services

Temporary evacuation Search and rescue Mass care

center operations

Public property protection

Flood fight Maintenance of vital services

Emergency ResponseEmergency ResponseFlood Warning/Preparedness ComponentsFlood Warning/Preparedness Components

Evacuee return

Debris clearance

Return of services

Damage assessment

Provisions for assistance

Evacuee return

Debris clearance

Return of services

Damage assessment

Provisions for assistance

Post-Flood RecoveryPost-Flood RecoveryFlood Warning/Preparedness ComponentsFlood Warning/Preparedness Components

Public Awareness/Education Programs

O&M equipment

Periodic drills

Update plan

Public Awareness/Education Programs

O&M equipment

Periodic drills

Update plan

Continued Plan ManagementContinued Plan ManagementFlood Warning/Preparedness ComponentsFlood Warning/Preparedness Components

Flood Warning SystemFlood Warning System

AlertAlert

Remote rain and stage gages

Transmit information

Base station computer

Process information

Automated threatened area notification (most advance systems)



Base station computer

Process information

Automated threatened area notification (most advance systems)

Automated Stage DetectionAutomated Stage Detection

Float switch/submersed electric circuit activated by rising water

Telephone automatic alarm dialers activated

Calls placed to emergency managers

Manual threatened area notification

Float switch/submersed electric circuit activated by rising water

Telephone automatic alarm dialers activated

Calls placed to emergency managers


ManualManual

Observer read stage or rain gages.

Two way telephonic communication between observers and emergency managers


Observer read stage or rain gages.

Two way telephonic communication between observers and emergency managers


HybridHybrid

Combination of Alert and USGS stream gaging methods and equipment



Base station computer or two way telephonic communication with gages

Manual or automated threatened area notification

Combination of Alert and USGS stream gaging methods and equipment



Base station computer or two way telephonic communication with gages

Manual or automated threatened area notification


Elevation

Relocation


Buyout/Acquisition

Dry Flood Proofing

Wet Flood Proofing



Elevation

Relocation


Buyout/Acquisition

Dry Flood Proofing

Wet Flood Proofing



National Flood Insurance Program 44CFR 59-78

National Flood Insurance Program 44CFR 59-78

Flood Plain Regulation

Flood Insurance

Flood Mitigation


Flood Insurance

Flood Mitigation

Why InvestigateNonstructural Measures ?

Why InvestigateNonstructural Measures ?

Requirements

Opportunities

Requirements

Opportunities

RequirementsRequirements

The Flood Control Act of 1938 – authorized the Corps “where the construction cost of levees or flood walls included in any authorized project can be substantially reduced by the evacuation of a portion or all of the area proposed to be protected” to expend funds “toward the evacuation of the locality eliminated from protection and the rehabilitation of the persons so evacuated”.

The Flood Control Act of 1938 – authorized the Corps “where the construction cost of levees or flood walls included in any authorized project can be substantially reduced by the evacuation of a portion or all of the area proposed to be protected” to expend funds “toward the evacuation of the locality eliminated from protection and the rehabilitation of the persons so evacuated”.


The Flood Control Act of 1960 – authorized the Corps “to compile and disseminate information on floods and flood damages, including identification of areas subject to inundation by floods of various magnitudes and frequencies, and general criteria for guidance in the use of flood plain areas, and to provide engineering advice to local interests for their use in planning to ameliorate the flood hazard.: This is the Flood Plain Management Services Program.

The Flood Control Act of 1960 – authorized the Corps “to compile and disseminate information on floods and flood damages, including identification of areas subject to inundation by floods of various magnitudes and frequencies, and general criteria for guidance in the use of flood plain areas, and to provide engineering advice to local interests for their use in planning to ameliorate the flood hazard.: This is the Flood Plain Management Services Program.


National Flood Insurance Act of 1968 – authorized the National Flood Insurance Program, which has evolved to generally consist of flood insurance, flood plain regulation, and flood hazard mitigation through primarily nonstructural measures.

National Flood Insurance Act of 1968 – authorized the National Flood Insurance Program, which has evolved to generally consist of flood insurance, flood plain regulation, and flood hazard mitigation through primarily nonstructural measures.


The Water Resources Development Act of 1974 – requires of the Corps that “consideration shall be given to nonstructural alternatives to prevent or reduce flood damages”.

The Water Resources Development Act of 1974 – requires of the Corps that “consideration shall be given to nonstructural alternatives to prevent or reduce flood damages”.


Executive Order 11988 dated 24 May 1977 – requires the Corps to implement “action to reduce the risk of flood loss, to minimize the impact of floods on human safety, health and welfare, and to restore and preserve the natural and beneficial values served by floodplains.”

Executive Order 11988 dated 24 May 1977 – requires the Corps to implement “action to reduce the risk of flood loss, to minimize the impact of floods on human safety, health and welfare, and to restore and preserve the natural and beneficial values served by floodplains.”


Economic and Environmental Principles and Guidelines for Water and Related Land Resources Implementation Studies dated March 1983 (P&G) – requires of the Corps that “nonstructural measures should be considered as means for addressing problems and opportunities” in water and related land resources implementation studies.

Economic and Environmental Principles and Guidelines for Water and Related Land Resources Implementation Studies dated March 1983 (P&G) – requires of the Corps that “nonstructural measures should be considered as means for addressing problems and opportunities” in water and related land resources implementation studies.


Digest of Water Resources Policies and Authorities [EP 1165-2-1] – requires that “Consideration will be given both to measures intended to modify flood behavior [structural measures] and those intended to modify damage susceptibility by altering the ways in which people would otherwise occupy and use flood plain lands and waters [nonstructural measures].”

Digest of Water Resources Policies and Authorities [EP 1165-2-1] – requires that “Consideration will be given both to measures intended to modify flood behavior [structural measures] and those intended to modify damage susceptibility by altering the ways in which people would otherwise occupy and use flood plain lands and waters [nonstructural measures].”


Planning Guidance Notebook [ER 1105-2-100] – requires nonstructural measure consideration by stating “Section 73 of the Water Resources Development Act of 1974 requires consideration of nonstructural alternatives in flood damage reduction studies.

Planning Guidance Notebook [ER 1105-2-100] – requires nonstructural measure consideration by stating “Section 73 of the Water Resources Development Act of 1974 requires consideration of nonstructural alternatives in flood damage reduction studies.

OpportunitiesOpportunities Another set of tools No Adverse Impacts

Flood Plain Environmental

Complies with E.O. 11988 Complies with NFIP Regulations

HMGP acquired land Insurable structures/Fill in

floodway

Another set of tools No Adverse Impacts

Flood Plain Environmental

Complies with E.O. 11988 Complies with NFIP Regulations

HMGP acquired land Insurable structures/Fill in

floodway

Opportunities (cont.)Opportunities (cont.)New Uses of the Evacuated Flood Plain

Ecosystem RestorationRecreation Spillover Benefits

Water Quality ImprovementRecreation Costs - 50% versus 10%Cost Sharing

35% / 65%Lower Cost - PossibleMitigation of Adverse Effects of Structural

Projects

New Uses of the Evacuated Flood Plain Ecosystem RestorationRecreation Spillover Benefits

Water Quality ImprovementRecreation Costs - 50% versus 10%Cost Sharing

35% / 65%Lower Cost - PossibleMitigation of Adverse Effects of Structural

Projects

Opportunities (cont.)Opportunities (cont.) Achievement of Strategic Goals Achievement of the Environmental Operating Principles Achievement of Actions for Change

Partnering

Lower O&M Costs

Supports both short term and long term flood risk reduction

Redundant flood risk reduction - consequence focused.

Achievement of Strategic Goals Achievement of the Environmental Operating Principles Achievement of Actions for Change

Partnering

Lower O&M Costs

Supports both short term and long term flood risk reduction

Redundant flood risk reduction - consequence focused.

National Flood Insurance Program 44 CFR 59-78National Flood Insurance Program 44 CFR 59-78

DefinitionsBase FloodFloodFlood PlainFloodwaySubstantial DamageSubstantial Improvement

DefinitionsBase FloodFloodFlood PlainFloodwaySubstantial DamageSubstantial Improvement

Flood Plain Regulation 44 CFR 60Flood Plain Regulation 44 CFR 60

STREAM CHANNELSTREAM CHANNEL

FLOODWAYFLOODWAY FLOOD FRINGEFLOOD FRINGEFLOOD FRINGEFLOOD FRINGE

100 Year Floodplain100 Year

Floodplain

Base FloodBase Flood

100 Year Flood100 Year Flood

• V Zone

• Coastal A Zone

• A Zone

• X Zone

• V Zone

• Coastal A Zone

• A Zone

• X Zone

Coastal Flood Plain


Flood Insurance

Flood Mitigation


Flood Insurance

Flood Mitigation

Flood Insurance

Flood Insurance

NFI P

Flood Mitigation

Flood Mitigation

Floodplain RegulationFloodplain Regulation

All new construction and substantial improvements of :

Residential structures have the lowest floor, including basement, elevated to or above the Base Flood

Non-Residential structures have the lowest floor, including basement, flood proofed to or above the Base Flood




Requirements - RiverineRequirements - Riverine

Prohibit encroachments within the floodway unless it has been demonstrated through hydrologic and hydraulic analysis that the proposed encroachment will not result in any increase in the Base Flood Elevation

Prohibit encroachments within the floodway unless it has been demonstrated through hydrologic and hydraulic analysis that the proposed encroachment will not result in any increase in the Base Flood Elevation

Requirements - RiverineRequirements - Riverine

Requirements - CoastalRequirements - Coastal







All new construction and substantial improvements within V zones : Be elevated on piles or columns so the

bottom of the lowest horizontal structural member is Elevated to or above the Base Flood with the space below the lowest floor either free of obstruction or constructed with breakaway wall or open lattice

Do not use Fill

All new construction and substantial improvements within V zones : Be elevated on piles or columns so the

bottom of the lowest horizontal structural member is Elevated to or above the Base Flood with the space below the lowest floor either free of obstruction or constructed with breakaway wall or open lattice

Do not use Fill

Requirements - CoastalRequirements - Coastal


Flood Insurance

Flood Mitigation


Flood Insurance

Flood Mitigation

Flood Insurance

Flood Insurance

NFI P

Flood Mitigation

Flood Mitigation

Floodplain RegulationFloodplain Regulation

Flood InsuranceDefinitions


Basement

Building

Post FIRM building

Pre FIRM building

Walled and Roofed



Basement – any area of a building having its floor subgrade below ground level on all sides

Building – a walled and roofed structure that is principally above ground and affixed to a permanent site

Post FIRM building – a building for which the start of construction or substantial improvement occurred on or after the effective date of the initial FIRM for the community

Basement – any area of a building having its floor subgrade below ground level on all sides

Building – a walled and roofed structure that is principally above ground and affixed to a permanent site

Post FIRM building – a building for which the start of construction or substantial improvement occurred on or after the effective date of the initial FIRM for the community



Pre FIRM building – a building for which the start of construction or substantial improvement occurred before the effective date of the initial FIRM for the community

Walled and Roofed – the building has in place two or more exterior rigid walls and the roof is fully secured so that the building will resist flotation, collapse, and lateral movement

Pre FIRM building – a building for which the start of construction or substantial improvement occurred before the effective date of the initial FIRM for the community

Walled and Roofed – the building has in place two or more exterior rigid walls and the roof is fully secured so that the building will resist flotation, collapse, and lateral movement

Flood InsuranceFlood Insurance

General dwelling losses not covered Loss of insured property useLoss of access to insured propertyLoss of profitsLosses resulting from additional living

expenses while the insured property is being repaired

Losses resulting from casualties other than as defined as a flood

General dwelling losses not covered Loss of insured property useLoss of access to insured propertyLoss of profitsLosses resulting from additional living

expenses while the insured property is being repaired

Losses resulting from casualties other than as defined as a flood

Flood InsuranceFlood Insurance Dwelling Property covered:

Building Property

The building

Additions and extensions to the building

Materials and supplies to be used in constructing or altering the building

Fixtures, machinery, and equipment within the building and owned by the insured such as: furnaces, permanently installed wall mirrors, cupboards, bookcases, paneling, wallpaper, blinds, dishwashers, carpet, and garbage disposals, pumps, plumbing, ranges, stoves, refrigerators, etc.

Flood InsuranceFlood Insurance Dwelling Property covered:

Personal Property

Owned by the insured or members within the insured’s household if stored within the building and secured to prevent flotation out of the building during flooding

Debris Removal

Expense of debris removal if directly caused by a flood

Flood InsuranceFlood Insurance Dwelling Property not covered:

Personal property in the open Fences, retaining walls, docks, etc.

Indoor and outdoor poolsUnderground structures and equipment Land, lawns, trees, etc.

Animals Aircraft, watercraft Manufactured homes that are not anchored

Post FIRM basements in SFHA’s Personal property Fixtures/components attached to the building

but not needed for building support or utilities Finished walls

Dwelling Property not covered:Personal property in the open

Fences, retaining walls, docks, etc. Indoor and outdoor poolsUnderground structures and equipment Land, lawns, trees, etc.

Animals Aircraft, watercraft Manufactured homes that are not anchored

Post FIRM basements in SFHA’s Personal property Fixtures/components attached to the building

but not needed for building support or utilities Finished walls


Flood Insurance

Flood Mitigation


Flood Insurance

Flood Mitigation

Project criteria

Conform with hazard mitigation plan

Be cost effective

Conform with flood plain management criteria

Have a beneficial impact on the designated disaster area

75/25 cost share

Generally funded at 15% of total disaster grants

Project criteria

Conform with hazard mitigation plan

Be cost effective

Conform with flood plain management criteria

Have a beneficial impact on the designated disaster area

75/25 cost share

Generally funded at 15% of total disaster grants

Hazard Mitigation Grant Program

Types of ProjectsStructural

Nonstructural

Acquisition/relocation

Develop state and local mitigation standards

Develop comprehensive hazard mitigation programs with implementation as an essential component

Develop or improve warning systems

Types of ProjectsStructural

Nonstructural

Acquisition/relocation

Develop state and local mitigation standards

Develop comprehensive hazard mitigation programs with implementation as an essential component

Develop or improve warning systems

Hazard Mitigation Grant Program

Planning grants Develop flood hazard mitigation plans 75/25 cost share

Project grants Implement flood mitigation projects

contained in the flood hazard mitigation plan

75/25 cost shareTechnical assistance grants

To aid applicants in applying for the FMA Program

100/0 cost share$31 Million

Planning grants Develop flood hazard mitigation plans 75/25 cost share

Project grants Implement flood mitigation projects

contained in the flood hazard mitigation plan

75/25 cost shareTechnical assistance grants

To aid applicants in applying for the FMA Program

100/0 cost share$31 Million

Flood Mitigation Assistance Program

Pre-Disaster Mitigation ProgramMitigates all natural disasters –

not just floodMust have approved mitigation

plan for project funds75/25 cost shareBe cost effectiveEligible projects

Mitigation planning Mitigation projects Information dissemination

$100 Million

Pre-Disaster Mitigation ProgramMitigates all natural disasters –

not just floodMust have approved mitigation

plan for project funds75/25 cost shareBe cost effectiveEligible projects

Mitigation planning Mitigation projects Information dissemination

$100 Million

One or more claims to NFIP Relocation/Buyout/ Open Space Use Possible 100% Federal Up to $10 Million 75/25 Cost Share Standard

One or more claims to NFIP Relocation/Buyout/ Open Space Use Possible 100% Federal Up to $10 Million 75/25 Cost Share Standard

Repetitive Flood Claims Grant Program

Repetitive Flood Claims Grant Program

Four or more paid losses of $1,000 or more Two paid losses within a 10-year period Three or more paid losses since 1978

Four or more paid losses of $1,000 or more Two paid losses within a 10-year period Three or more paid losses since 1978

Repetitive LossRepetitive Loss

Severe Repetitive Loss PropertiesResidentialFour NFIP claims over $5,000 each

At least two claims within any 10 year period

At least two claims that cumulatively exceed the value of the property

Possible 90% Federal 75/25 Cost Share Standard Up to $40 Million

Severe Repetitive Loss PropertiesResidentialFour NFIP claims over $5,000 each

At least two claims within any 10 year period

At least two claims that cumulatively exceed the value of the property

Possible 90% Federal 75/25 Cost Share Standard Up to $40 Million

Severe Repetitive Loss ProgramSevere Repetitive Loss Program

Credible activitiesPublic Information

Elevation certificates Map information Outreach programs Hazard Disclosure Flood protection library Flood protection assistance

Credible activitiesPublic Information

Elevation certificates Map information Outreach programs Hazard Disclosure Flood protection library Flood protection assistance

Community Rating SystemCommunity Rating System

Open space preservation

Higher regulatory standards

Flood data maintenance

Stormwater management

Open space preservation

Higher regulatory standards

Flood data maintenance

Stormwater management

Mapping and RegulatoryMapping and Regulatory

Flood plain management plans

Acquisition and relocation

Retrofitting

Drainage

Flood plain management plans

Acquisition and relocation

Retrofitting

Drainage

Flood Damage Reduction ActivitiesFlood Damage Reduction Activities

Flood Warning Program

Levee Safety

Dam Safety

Flood Warning Program

Levee Safety

Dam Safety

Flood Preparedness ActivitiesFlood Preparedness Activities

Maximum flood insurance premium reduction is 45%

Maximum flood insurance premium reduction is 45%

Flood Plain Management Criteria Relative to Structural Flood Damage Reduction Projects


Basic requirements of the structural flood damage reduction project

No adopted regulatory floodway

The project will not increase the Base Flood Elevation (BFE) more than a foot at any location

Basic requirements of the structural flood damage reduction project

No adopted regulatory floodway

The project will not increase the Base Flood Elevation (BFE) more than a foot at any location

National Flood Insurance ProgramNational Flood Insurance Program

Adopted regulatory floodwayThe project will not place fill material or new construction within the regulatory floodway unless it is demonstrated that no increase in the BFE will occur

Adopted regulatory floodwayThe project will not place fill material or new construction within the regulatory floodway unless it is demonstrated that no increase in the BFE will occur



National Flood Insurance ProgramNational Flood Insurance Program

Conditional Letter of Map Revision (CLOMR). Basic requirements of the CLOMR are as follows:

Request for conditional approval of the FIRM change.

Evaluate alternatives which would not result in an increase in BFE

Document that individual legal notice has been made to all increased BFE

Gain concurrence of other impacted communities.


Request for conditional approval of the FIRM change.

Evaluate alternatives which would not result in an increase in BFE

Document that individual legal notice has been made to all increased BFE

Gain concurrence of other impacted communities.


Certify that no structures are located in areas impacted by the increased BFE

Provide documentation of hydrologic and hydraulic analysis reflecting the increase in BFE and change in floodway

Provide a plan to mitigate the increased BFE and change in floodway.

A Letter of Map Revision (LOMR) submittal is required upon project completion.


Certify that no structures are located in areas impacted by the increased BFE

Provide documentation of hydrologic and hydraulic analysis reflecting the increase in BFE and change in floodway

Provide a plan to mitigate the increased BFE and change in floodway.

A Letter of Map Revision (LOMR) submittal is required upon project completion.

Basic ObjectivesProvide leadership in flood plain managementAvoid long and short term adverse flood plain

impacts associated with projects.Avoid direct and indirect support of

development in the flood plain.Reduce the risk of flood loss.Minimize the impact of floods on health, safety,

and welfare. Restore and preserve the natural and beneficial values of flood plains.

Involve the public throughout the flood plain management decision process.

Basic ObjectivesProvide leadership in flood plain managementAvoid long and short term adverse flood plain

impacts associated with projects.Avoid direct and indirect support of

development in the flood plain.Reduce the risk of flood loss.Minimize the impact of floods on health, safety,

and welfare. Restore and preserve the natural and beneficial values of flood plains.

Involve the public throughout the flood plain management decision process.

Executive Order 11988 – Flood Plain ManagementExecutive Order 11988 – Flood Plain Management

Basic Steps

Determine whether the project is in 100-year or 500-year flood plain.

Notify the public early of a project that is proposed to be 100-year or 500-year flood plain to involve local decision makers in the decision process.

Identify and evaluate practicable alternatives to locating the project in the flood plain.

Identify the potential direct and indirect impacts with the project in the flood plain.

Basic Steps

Determine whether the project is in 100-year or 500-year flood plain.

Notify the public early of a project that is proposed to be 100-year or 500-year flood plain to involve local decision makers in the decision process.

Identify and evaluate practicable alternatives to locating the project in the flood plain.

Identify the potential direct and indirect impacts with the project in the flood plain.


Basic Steps

Minimize the potential adverse impacts to or within the flood plain.

Reevaluate the project to see if it is still practicable in light of the impact to others

Provide the public with the findings and explanation that the project in the flood plain is the only practicable alternative.

Provide for mitigation of adverse affects of the project.

Basic Steps

Minimize the potential adverse impacts to or within the flood plain.

Reevaluate the project to see if it is still practicable in light of the impact to others

Provide the public with the findings and explanation that the project in the flood plain is the only practicable alternative.

Provide for mitigation of adverse affects of the project.


Basic Steps

•NFIP standards are minimum

•If locating "new construction" in a flood plain, flood proofing should be applied

Critical Actions

•A slight chance of flooding is too great

•If flooded, would the flood effects be worsened

•Risk to public safety and increased hazard to life

•500 year flood standard minimum

Basic Mitigation RequirementsLand

Land that is within the regulatory floodway post-project that was not within the regulatory floodway pre-project.

Land that is within the 100-year flood boundary post-project that was not within the 100-year flood boundary pre-project.

Land that is in the pre-project floodway that has a floodway elevation post-project that is higher than the pre-project floodway elevation.

Mitigation.

Basic Mitigation RequirementsLand

Land that is within the regulatory floodway post-project that was not within the regulatory floodway pre-project.

Land that is within the 100-year flood boundary post-project that was not within the 100-year flood boundary pre-project.

Land that is in the pre-project floodway that has a floodway elevation post-project that is higher than the pre-project floodway elevation.

Mitigation.


National Flood Insurance Program (NFIP) Insurable Structures

Structures that are within the regulatory floodway post project that were not within the regulatory floodway pre-project.

Structures that are within the 100-year flood boundary post-project that were not in the 100-year flood boundary pre-project.

Structures that are subject to a 100-year flood water surface elevation post-project that is higher than the 100-year flood water surface elevation pre-project.

Mitigation

National Flood Insurance Program (NFIP) Insurable Structures

Structures that are within the regulatory floodway post project that were not within the regulatory floodway pre-project.

Structures that are within the 100-year flood boundary post-project that were not in the 100-year flood boundary pre-project.

Structures that are subject to a 100-year flood water surface elevation post-project that is higher than the 100-year flood water surface elevation pre-project.

Mitigation


State Minimum Standards for Flood Plain Management

Varies from State to State

Are always equal to or more restrictive than that of the NFIP in terms of:

Flood plain regulation

•Elevation above the BFE.

•Allowable rise due to fill or new construction in the flood plain

Mitigation of adverse impacts of projects.

State Minimum Standards for Flood Plain Management

Varies from State to State

Are always equal to or more restrictive than that of the NFIP in terms of:

Flood plain regulation

•Elevation above the BFE.

•Allowable rise due to fill or new construction in the flood plain

Mitigation of adverse impacts of projects.


Section 202 of WRDA 1996Flood Plain Management PlansSection 202 of WRDA 1996Flood Plain Management Plans

• Applies to any flood damage reduction project which had the PPA signed after 12 October 1996.

• Non Federal interests must prepare a flood plain management plan designed to reduce impacts of future floods in the project area

• Develop within one year of PPA execution

•Implement within one year after project completion

•Primarily non structural measures are used

• Applies to any flood damage reduction project which had the PPA signed after 12 October 1996.

• Non Federal interests must prepare a flood plain management plan designed to reduce impacts of future floods in the project area

• Develop within one year of PPA execution

•Implement within one year after project completion

•Primarily non structural measures are used

Section 402 of WRDA 1986Section 402 of WRDA 1986

• Applies to all flood damage reduction projects

• Non Federal interests shall comply with applicable Federal flood plain management and flood insurance programs.

• Applies to all flood damage reduction projects

• Non Federal interests shall comply with applicable Federal flood plain management and flood insurance programs.

Section 219 of WRDA 1999Section 219 of WRDA 1999• Applies to the analysis of nonstructural buyout and

relocations measures• All projects• Benefit Calculation• Use both externalized and internalized portions of

flood damages prevented• Valued new use of evaluated flood plain• Reduction in damages to public property• Reduction in emergency costs• Reduction in admin costs of NFIP and disaster

relief• Damages prevented

• Applies to the analysis of nonstructural buyout and relocations measures

• All projects• Benefit Calculation• Use both externalized and internalized portions of

flood damages prevented• Valued new use of evaluated flood plain• Reduction in damages to public property• Reduction in emergency costs• Reduction in admin costs of NFIP and disaster

relief• Damages prevented

Section 219 of WRDA 1999 (cont.)Section 219 of WRDA 1999 (cont.)

• For real estate costs use comparable flood free land and building cost

• Betterments to gain DSS and housing costs of last resort are not included in flood free property cost.

• For real estate costs use comparable flood free land and building cost

• Betterments to gain DSS and housing costs of last resort are not included in flood free property cost.

PurposeTo ensure that persons displaced as a direct

result of Federal and federally-assisted projects are treated fairly, consistently, and equitably so that such persons will not suffer disproportionate injuries as a result of projects designed for the benefit of the public as a whole.

PurposeTo ensure that persons displaced as a direct

result of Federal and federally-assisted projects are treated fairly, consistently, and equitably so that such persons will not suffer disproportionate injuries as a result of projects designed for the benefit of the public as a whole.

Uniform Relocation Assistance and Real Property Policies Act of 1970

and the Uniform Relocation Act Amendments of 1987

ApplicabilityThe requirements apply to any acquisition of real

property for a federal project or project, and to programs and projects where there is Federal financial assistance in any part of project costs except for:

Voluntary transactions that meet all of the following conditions:No specific site or property needs to be acquiredThe property to be acquired is not part of an intended, planned, or designated project area where all or substantially all of the property within the area is to be acquired within specific time limits

The Agency will not acquire the property in the event negotiations fail to result in an amicable agreement, and the owner is so informed in writing.

The Agency will inform the owner of what it believes to be fair market value of the property.

ApplicabilityThe requirements apply to any acquisition of real

property for a federal project or project, and to programs and projects where there is Federal financial assistance in any part of project costs except for:

Voluntary transactions that meet all of the following conditions:No specific site or property needs to be acquiredThe property to be acquired is not part of an intended, planned, or designated project area where all or substantially all of the property within the area is to be acquired within specific time limits

The Agency will not acquire the property in the event negotiations fail to result in an amicable agreement, and the owner is so informed in writing.

The Agency will inform the owner of what it believes to be fair market value of the property.

Decent, Safe, and Sanitary

Functionally Equivalent to the present dwelling

Located in an area not less desirable than the present location

Currently available in the private market

Within the financial means of the displaced person

Decent, Safe, and Sanitary

Functionally Equivalent to the present dwelling

Located in an area not less desirable than the present location

Currently available in the private market

Within the financial means of the displaced person

Comparable Replacement Dwelling

The term “decent, safe, and sanitary” means a dwelling which:

Is structurally sound, weathertight, and in good repair.

Contains a safe electrical wiring system adequate for lighting and other devices.

Contains a heating system capable of sustaining a healthful temperature (of approximately 70 degrees) for a displaced person, except in those areas where local climatic conditions do not require such a system.

Is adequate in size with respect to the number of rooms and area of living space needed to accommodate the displaced person.

Has proper ingress and egress

Is properly connected to an appropriate water source and an appropriate sewage system.

The term “decent, safe, and sanitary” means a dwelling which:

Is structurally sound, weathertight, and in good repair.

Contains a safe electrical wiring system adequate for lighting and other devices.

Contains a heating system capable of sustaining a healthful temperature (of approximately 70 degrees) for a displaced person, except in those areas where local climatic conditions do not require such a system.

Is adequate in size with respect to the number of rooms and area of living space needed to accommodate the displaced person.

Has proper ingress and egress

Is properly connected to an appropriate water source and an appropriate sewage system.

Uniform Relocation Assistance and Real Property Policies Act of 1970 and the Uniform

Relocation Act Amendments of 1987

Replacement Housing Payments:

Owners who were in occupancy 180 days or more prior to the initiation of negotiations may be eligible for a purchase supplement up to $22,500 or rental assistance payment up to $5,250.

Tenants who were in occupancy for 90 days or more prior to initiation of negotiation man be eligible for a rental assistance payment up to $5,250.

Housing of Last Resort

Replacement Housing Payments:

Owners who were in occupancy 180 days or more prior to the initiation of negotiations may be eligible for a purchase supplement up to $22,500 or rental assistance payment up to $5,250.

Tenants who were in occupancy for 90 days or more prior to initiation of negotiation man be eligible for a rental assistance payment up to $5,250.

Housing of Last Resort

Uniform Relocation Assistance and Real Property Policies Act of 1970 and

the Uniform Relocation Act Amendments of 1987

Uniform Relocation Assistance and Real Property Policies Act of 1970 and

the Uniform Relocation Act Amendments of 1987

Engineering Regulation 1105-2-100




Nonstructural measures shall receive equal consideration in the Planning process

New uses of evacuated flood plainRecreationEcosystem restorationRecreation cost may not exceed 50% of

the total project costsRecreation benefits may exceed 50% of

the benefits needed for project justification

Nonstructural measures shall receive equal consideration in the Planning process

New uses of evacuated flood plainRecreationEcosystem restorationRecreation cost may not exceed 50% of

the total project costsRecreation benefits may exceed 50% of

the benefits needed for project justification

New uses of evacuated flood plain (continued)Benefits from ecosystem restoration and

recreation that are new uses of the evacuated flood plain are considered flood damage reduction

Land costs applicable to ecosystem restoration should not exceed 25% of total project costs

Recreation and ecosystem restoration, if considered incidental to the primary purpose of flood damage reduction, can be cost shared on the basis of flood damage reduction

New uses of evacuated flood plain (continued)Benefits from ecosystem restoration and

recreation that are new uses of the evacuated flood plain are considered flood damage reduction

Land costs applicable to ecosystem restoration should not exceed 25% of total project costs

Recreation and ecosystem restoration, if considered incidental to the primary purpose of flood damage reduction, can be cost shared on the basis of flood damage reduction




Relocation/buyout is justified by:Value of the new use of the evacuated flood plainReduction in damage to public propertyReduction in emergency costsReduction in administrative costs of the NFIP

and disaster reliefTotal flood damage reducedSpillover benefits

Two or more structures are needed unless single property protection is part of a larger plan benefiting multiple owners

65%/35% cost share

Relocation/buyout is justified by:Value of the new use of the evacuated flood plainReduction in damage to public propertyReduction in emergency costsReduction in administrative costs of the NFIP

and disaster reliefTotal flood damage reducedSpillover benefits

Two or more structures are needed unless single property protection is part of a larger plan benefiting multiple owners

65%/35% cost share

U.S. Army Corps of EngineersU.S. Army Corps of Engineers

National Nonstructural National Nonstructural Flood Proofing Flood Proofing

Committee Committee

U.S. Army Corps of EngineersU.S. Army Corps of Engineers

National Nonstructural National Nonstructural Flood Proofing Flood Proofing

Committee Committee

national nonstructural/ flood proofing committee national nonstructural/ flood proofing committee

Documents

structure slide

flood risk management

water research slide

law nonstructural measures

omaha district mark

omaha district gene

tulsa district stuart

relocation process