1. Update on Use of Hazus for FEMA Risk MAP Flood Risk Products Shane Parson – RAMPP PTS (URS)

2. 2 Agenda  Overview of Risk MAP Non-Regulatory Products and Datasets  Flood Risk Assessment (FRA) Dataset Process AAL Data Refined HAZUS Data Composite Data Summary Data  FRA data in the Flood Risk Products Flood Risk Database Flood Risk Report Flood Risk Map

3. 3 Program Product Comparisons DFIRM Database Traditional Regulatory Products

4. 4 Program Product Comparisons Non-Regulatory Flood Risk Products

5. 5 Flood Risk Products and Datasets Three Flood Risk Products Flood Risk Database Flood Risk Report Flood Risk Map Four Flood Risk Datasets Flood Depth & Analysis Grids Flood Risk Assessments Changes Since Last FIRM Areas of Mitigation Interest Flood Risk Datasets Flood Risk ReportFlood Risk Map Flood Risk Database

6. 6 Flood Risk Assessment Data Purpose and Intended Uses  Identify Areas and Communicate Relative Flood Risk: Flood prone areas Vulnerable people and property  Provide Flood Risk $: Potential damage severity for different flood frequencies Identify locations with possible cost effective mitigation options  Improve Estimates for Flood Risk $: Losses from Average Annualized Loss (AAL) Study Refined losses from new flood study depth grids Refined general building stock data from local sources

7. 7  Flood Risk Assessment Data 2010 HAZUS Average Annualized Loss (AAL) Study Data Refined HAZUS and Other Risk Analyses Data Composite Data HAZUS MH Flood Risk Assessment Flood Risk Assessment Datasets

8. 8 Scope of Flood Risk Assessment Dataset  Discovery Meeting  Regulatory Products  Deployment Requirements  Metrics  Existing Hazus Studies  Available Data and Funding

9. 9 AAL Study  2010 HAZUS-MH Flood Average Annualized Loss Estimation (AAL) was performed for continental U.S. using MR4  Inputs: County-wide study regions 30 meter DEM Default Census data  Final Output included: Total exposure Average Annualized Loss Annualized Loss Ratio

10. 10 Flood Risk Assessment Data Refined HAZUS Analysis  Overview Depth Grids from new study areas imported into HAZUS HAZUS run for each return period, losses estimated, and annualized HAZUS results exported and stored in Flood Risk Database  Estimation of Losses Dollar Losses  Residential Loss  Commercial Loss  Other Asset Loss Percent Damage  Evaluate Building Stock  Structure and Content Considerations Business Disruption

11. 11 Development of the Flood Risk Assessment Dataset in Risk MAP

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24. 24 Average Annualized Loss (AAL)

25. 25 Refined HAZUS

26. 26 Composite Data

27. 27 Enhanced Flood Risk Assessment Analyses  Enhancements could include: Risk Assessments at site-specific locations Incorporation of locally-provided inventory data (first-floor elevations and/or parcel data) Additional sources of flood depth grids Supplemental HAZUS analyses or other types of analyses

28. 28 Coastal Considerations for Flood Risk Assessment  AAL study used separate riverine and coastal flood modeling  1 % annual chance (100-yr) only required Refined analysis (due to availability of wave height data for BFE)  Other return period losses could be estimate be deriving coastal depth grid based on stillwater elevations and estimates of wave height  Hazus coastal loss modeling only needed in locations with wave heights

29. 29 FRA: Risk MAP Phase of Delivery  Flood Risk Assessment Results Draft Results : Delivered during Phase C Data Development and Sharing Final Results : Delivered during Phase G Preliminary NFIP Map Release

30. 30 Flood Risk Assessment Delivered

31. 31 Flood Risk Database Overview  Primary Storage Device for all Flood Risk Data Changes Since Last Firm (CSLF) Risk Assessment Flood Depth and Analysis Grids (DAGs) Areas of Mitigation Interest (AOMIs)  Stores Data to Create: Flood Risk Report Flood Risk Map  Delivered Digitally to Stakeholders

32. 32 Flood Risk Assessment in FRD  L_RA_AAL: AAL Study data  L_RA_Refined: Refined analysis data  L_RA_Composite: Composite of AAL and Refined Data  S_CenBlk_Ar: Feature class that contains census block exposure data  L_Exposure: Community-based summaries of exposure data  L_RA_Summary: Community-based summaries of loss data from composite

33. 33 Flood Risk Report Overview  Background: Purpose, Methods Risk Reduction Practices  Project Results Changes Since Last FIRM Depth & Analysis Grids Flood Risk Assessment (enhanced analyses)  e.g. Areas of Mitigation Interest  Summarized by Locations Communities and Watersheds

34. 34 Flood Risk Report Content – Community Summaries

35. 35 Flood Risk Report Section 3  Flood Risk Datasets – Risk Assessment Results

36. 36 Flood Risk Map Background  The FRM’s intent is to provide a geographic summary of risks within the project area  The FRM is not a regulatory product, and is intended to focus on specifically-identified risk areas  In most cases, the FRM is created along with the FRD as companion elements to the H & H study  This integrated approach is to produce a map that requires little or no manual cartographic finishing

37. 37 Flood Risk Map Flood Risk Data  Census Blocks symbolized with Risk Assessment Data

38. 38 Guidance for Non-Reg Datasets & Products  Appendices to Guidelines and Standards for Flood Risk Analysis and Mapping Draft: Appendix N – Flood Risk Data Development Draft: Appendix O – Format and Standards for Non-Regulatory Flood Risk Products  Operating Guidance 1-11: Risk MAP Guidance for Incorporating Mitigation Planning Technical Assistance and Training into Flood Risk Projects 2-11: Operating Guidance for Creation of Risk MAP Products 3-11: Communicating Flood Risk with Risk MAP Datasets and Products 4-11: Risk MAP Meetings Guidance 6-11: User Guidance for Flood Risk Datasets and Products Draft: Guidance for Additional Non-Regulatory Products for Coastal and Dam Flooding Analysis  Procedure Memos PM #65: Guidance for Additional Enhanced Dataset Definitions and Flood Risk Database Standards PM #59: Guidance for Implementation of Watershed-Based Studies