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NYS Department of Environmental Conservation The National Flood Insurance Program A Program Overview.

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Presentation on theme: "NYS Department of Environmental Conservation The National Flood Insurance Program A Program Overview."— Presentation transcript:

1 NYS Department of Environmental Conservation The National Flood Insurance Program A Program Overview

2 NYS Department of Environmental Conservation DEC Floodplain Coordinators Central Office Bill Nechamen, CFM(518) Kelli Higgins-Roche, CFM(518) Rick Tuers(518) Dondi Saltsman(518)

3 NYS Department of Environmental Conservation Region 4: Schenectady Tom Blanchard, CFM Region 3: New Paltz Mark Lewis DEC NFIP Regional Coordinators REGIONAL OFFICES

4 NYS Department of Environmental Conservation The National Flood Insurance Act of 1968 The National Flood Insurance Act created the Federal Insurance Administration and directed it to: Identify flood-prone areas within the U.S. Establish flood-risk zones within those areas. Require new and substantially improved buildings be constructed in ways that minimize flood damage. Transfer cost of private property flood losses from taxpayer to property owner.

5 NYS Department of Environmental Conservation Flood Disaster Protection Act of 1973 Significant expansion of the NFIP and required: Acceleration of flood insurance studies Notification of flood-prone communities Mandatory purchase requirement Participation in the NFIP for Federal assistance

6 NYS Department of Environmental Conservation National Flood Insurance Reform Act of 1994 Expanded flood insurance purchase requirements / Lender penalties for non- compliance Requires lenders to determine if structure is located in a flood hazard area Flood disaster assistance requires maintenance of flood insurance policy Increased Cost of Compliance -- allows insurance payment to elevate, demolish or relocate structure

7 NYS Department of Environmental Conservation Federal Role Risk identification/mapping Establish development/building standards Provide affordable flood insurance coverage

8 NYS Department of Environmental Conservation State Role Establish development/building standards –State building code –Model local law for flood damage prevention Provide technical assistance to local communities/agencies Under contract with FEMA, evaluate and document community/agency floodplain management activities

9 NYS Department of Environmental Conservation Local Role Adopt local floodplain management laws Issue or deny development/building permits Inspect development Maintain records

10 NYS Department of Environmental Conservation Definitions

11 NYS Department of Environmental Conservation Definition of Special Flood Hazard Area “Darkly shaded area on a Flood Hazard Boundary Map or a Flood Insurance Rate Map which identifies that area that has a 1 percent chance of being flooded in any given year. The FIRM identifies these shaded areas as flood zones A, AO, AH, A1-30, AE, A99, V, V1-30, and VE.”

12 NYS Department of Environmental Conservation Definition of Base Flood A flood that has a one-percent chance of being equaled or exceeded in any given year. It often is referred to as the "100-year" flood. –26% chance of occurring in a 30-yr period –39% chance of occurring in a 50-yr period –63% chance of occurring in a 100-yr period

13 NYS Department of Environmental Conservation Definition of Floodway “...means the channel of a river or other watercourse and the adjacent land areas that must be reserved in order to discharge the base flood without cumulatively increasing the water surface elevation more than one foot.” Also referred to as the “Regulatory Floodway.”

14 NYS Department of Environmental Conservation Hydraulics – Floodway Example

15 NYS Department of Environmental Conservation Definition of Lowest Floor “...means the lowest floor of the lowest enclosed area, including basement. An unfinished or flood resistant enclosure, usable solely for parking of vehicles, building access or storage in an area other than a basement area is not considered a building’s lowest floor, provided that such enclosure is not built so as to render the structure in violation of the applicable non-elevation design requirements of this ordinance.”

16 NYS Department of Environmental Conservation

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20 Definition of Basement Basement or Cellar is that portion of a building having its floor subgrade (below ground level) on all sides.

21 NYS Department of Environmental Conservation Definition of Development “...means any man-made change to improved or unimproved real estate, including but not limited to buildings or other structures, mining, dredging, filling, grading, paving, excavation or drilling operations or storage of equipment or materials.”

22 NYS Department of Environmental Conservation Definition of Substantial Improvement Any reconstruction, rehabilitation, addition, or other improvements of a structure, the cost of which equals or exceeds 50% of the market value of the structure before the “start of construction” of the improvement.

23 NYS Department of Environmental Conservation Definition of Substantial Improvement... This term includes structures which have incurred “substantial damage”, regardless of the actual repair work performed.

24 NYS Department of Environmental Conservation Definition of Substantial Damage Damage of any origin sustained by a structure whereby the cost of restoring the structure to its before damaged condition would equal or exceed 50% of the market value of the structure before the damage occurred.

25 NYS Department of Environmental Conservation Substantial Improvement or Damage Does Not Include... Any project for improvement of a structure to correct existing violations of state or local health, sanitary, or safety codes which have been identified by the local code enforcement official and which are the minimum necessary to assure safe living conditions or...

26 NYS Department of Environmental Conservation Substantial Improvement or Damage Does Not Include... Any alteration of an “historic structure”, provided that the alteration will not preclude the structure’s continued designation as an “historic structure.”

27 NYS Department of Environmental Conservation Requirements For Substantial Improvement Substantially improved structures are considered NEW CONSTRUCTION and must meet all of the minimum building standards of the NFIP.

28 Flood Insurance Studies and Maps

29 NYS Department of Environmental Conservation Use the FIRM to Identify Special Flood Hazard Areas Identify the location of specific property Estimate BFE at a specific site Determine flood insurance zone at a specific site Determine the location of the regulatory floodway

30 NYS Department of Environmental Conservation Types of Maps Flood Hazard Boundary Maps (FHBM) Flood Insurance Rate Map (FIRM) Flood Boundary Floodway Map (FBFM) Digital Flood Insurance Rate Map (DFIRM)

31 NYS Department of Environmental Conservation Level of Detail Approximate study--delineates "100- year" floodplain boundaries; does not determine base flood elevations or depths Detailed study--determines base flood elevations (BFEs) or depths to be displayed on FIRM

32 Reading a FIRM Open Map Index and Find Panel Older maps are by Community. Newer maps are by County. Moving towards County-wide and Watershed based Mapping.

33 NYS Department of Environmental Conservation

34 Some Map Features Wavy Line used when Flood Elevation Varies along Watercourse; Label used when flood elevation is uniform over large area.

35 NYS Department of Environmental Conservation

36 Older “Flat” Maps

37 Flood Boundary & Floodway Map

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39 NYS Department of Environmental Conservation Flood Profile Example

40 NYS Department of Environmental Conservation Who Must Get Local Floodplain Development Permits Private Developers Counties Cities, Towns or Villages School Districts Public Improvement Districts Established by Section of Environmental Conservation Law

41 NYS Department of Environmental Conservation Human Caused Watercourse Alterations: Local Requirements Local Permits Required for Floodplain Development LOMR may be Required Provide required notifications of changes in existing watercourses to... –FEMA –DEC –Adjacent Communities Note: Permit holder must provide for maintenance of altered portion of watercourse in perpetuity.

42 NYS Department of Environmental Conservation The Elevation Certificate Administrative tool of the NFIP Policy rating Support of map revisions and amendments Certify building elevations Community compliance Download at:

43 NYS Department of Environmental Conservation Elevation Requirements for Zones AE, AH, and A1-30 All new construction and substantial improvement shall have the Lowest Floor, including basement, elevated to or above the BFE (Plus 2’ Freeboard if Residential Construction) The reference level for the lowest floor is measured at the top of the sub-floor Residential Building Code: R Building Code Section : Refers to ASCE 24

44 NYS Department of Environmental Conservation Elevation Requirements: Zone A- NO Base Flood Elevation Data All new construction or substantial improvement, shall have the lowest floor, including basement, elevated at least three feet above the highest adjacent grade. (DEC Model Local Law; NYS Residential Building Code, R ) For subdivisions or other developments over 50 lots or 5 acres, applicant must provide flood elevation data and build accordingly. (FEMA Regulations: 44CFR60.3(b)(3))

45 NYS Department of Environmental Conservation Elevation Requirements: Zone A- NO Base Flood Elevation Data If there is a Base Flood Elevation from a reputable source, then use it. –NYS DEC –Corps of Engineers –NRCS –Historic Flood Data –Other engineering study, including for development of over 5 acres or over 50 lots

46 NYS Department of Environmental Conservation

47 Requirements in the Floodway No new development, including fill, in designated floodways that would increase flood heights. Developer must submit a hydraulic analysis which determines no rise in flood heights. If there is any rise, project must be reconfigured or maps revised. No variances for development in floodway.

48 NYS Department of Environmental Conservation Construction Standards: Elevated Foundations Fill Perimeter Wall Pile

49 Slab on Fill Fill

50 NYS Department of Environmental Conservation Standards for Elevation on Fill Compaction Will not settle below BFE Slopes Protection Not in Floodway Lowest floor must remain above BFE + 2

51 Perimeter Wall Foundation Opening (typical)

52 NYS Department of Environmental Conservation Standards for Elevation on Perimeter Wall Foundations Fully enclosed areas below the lowest floor shall be designed to automatically equalize hydrostatic flood forces on exterior walls by allowing for the entry and exit of floodwaters

53 NYS Department of Environmental Conservation Minimum Standards for Foundation Openings A minimum of two openings having a total net area of not less than one square inch for every square foot of enclosed area subject to flooding. The bottom of all openings shall be no higher than one foot above grade. Openings may be equipped with screens, louvers, valves, or other “automatic” coverings

54 Pile Foundation

55 NYS Department of Environmental Conservation Post or Pile Foundations Have much greater resistance to lateral loads Should be used in areas of deep flooding and/or high velocities Over-the-top ties or frame ties must be used on manufactured homes to resist wind and water forces

56 NYS Department of Environmental Conservation All structures must be properly anchored When elevating a manufactured home above the BFE, the home must be anchored to the foundation or ground to resist wind and water forces. Anchoring and Elevated Foundations

57 NYS Department of Environmental Conservation

58 Floodproofing ONLY NON-RESIDENTIAL STRUCTURES MAY BE FLOODPROOFED IN LIEU OF ELEVATION. PE or Architect Certification Required

59 NYS Department of Environmental Conservation Standards For Utilities And Building Systems All new construction and substantial improvement shall be constructed with electrical, HVAC, plumbing and other service facilities elevated or floodproofed to prevent water from entering or accumulating within the components during conditions of flooding. (Resid. Code of NYS: R )

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61 NYS Department of Environmental Conservation Technical Bulletins Guide-01 User's Guide to Technical Bulletins 1-93 Openings in Foundation Walls: 2-93 Flood-Resistant Materials Requirements 3-93 Non-Residential Floodproofing 4-93 Elevator Installation 5-93 Free-of-Obstruction Requirements 6-93 Below-Grade Parking Requirements 7-93 Wet Floodproofing Requirements 8-96 Corrosion Protection for Metal Connectors in Coastal Areas 9-99 Design and Construction Guidance for Breakaway Walls Below Elevated Coastal Buildings Ensuring that Structures Built on Fill In or Near Special Flood Hazard Areas are Reasonably Safe From Flooding Crawlspace Construction for Buildings Located in Special Flood Hazard Areas

62 NYS Department of Environmental Conservation If a Structure is substantially damaged and is not brought into compliance with the regulations and L.L., how will this impact flood insurance?

63 NYS Department of Environmental Conservation LOWEST FLOOR 5’ NGVD BFE 10 NGVD Existing Pre FIRM Structure, With Basement $100,000 coverage Pre FIRM Rate = $948

64 NYS Department of Environmental Conservation LOWEST FLOOR 5’ NGVD BFE 10 NGVD FLOOD! Damage = $75,000 Market Value = $100,000 STRUCTURE SUBSTANTIALLY DAMAGED

65 NYS Department of Environmental Conservation LOWEST FLOOR 5’ NGVD BFE 10 NGVD Post FIRM Rerating Actuarial Rate $7,800 (2008) Structure Repaired - Not Elevated

66 NYS Department of Environmental Conservation LOWEST FLOOR 12’ NGVD BFE 10 NGVD Post FIRM Rerating Actuarial Rate $ Structure Repaired - Elevated

67 NYS Department of Environmental Conservation Post FIRM Rerating Actuarial Rate $ Structure Repaired - Elevated BFE 10 NGVD LOWEST FLOOR 10’ NGVD

68 NYS Department of Environmental Conservation Post FIRM Rerating Actuarial Rate $ Structure Repaired - Elevated BFE 10 NGVD LOWEST FLOOR 9’ NGVD

69 NYS Department of Environmental Conservation


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