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Explore the multifaceted uses of Hazus beyond planning, including user-defined facilities analysis, challenges, solutions, and public outreach benefits. Learn how Hazus enhances risk-based analysis and supports mitigation grant applications.
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The Diversity of HazusUses for Hazus Beyond Planning ASFPM 2011 National Conference Louisville, KY Tuesday, May 17, 2011
Today’s Speakers • Rob Flaner, CFM • Hazard Mitigation Program Manager • Over 20 years experience in FEMA hazard mitigation programs. • Project Manager for 30 hazard mitigation planning efforts in the west over the past 7 years. • Ed Whitford • GIS/Hazus Program Manager • Performed Hazus risk assessments on over 20 projects.
What are we going to talk about? • Wouldn’t be nice if………..! • Diverse applications of Hazus • What is a “user defined facilities” analysis • Updating Hazus with “user defined” data • Project examples • What we have learned
Disclaimer • The topics we will discuss are based on our applications of Hazus. • Some of these applications are currently not sanctioned by FEMA. • But, in this RiskMAP age, “Wouldn’t be nice if……….!
What is the user defined facilities approach? • User defined facilities are those structures, other than essential facilities or high potential loss facilities, which the user may wish to analyze on a site-specific basis. • You can construct a base model that will allow you to extract Hazus outputs on a site-by-site basis.
User defined approach and analysis • Building specific data • Assessor • FEMA Elevation Certificates • Site Surveys • Flood depth grids • HEC-RAS • FLO-2D • FEMA Flood Studies • Hazus Generated
User defined inputs • Parcel and building footprint data • Assessor tax data • Year Built • Square Footage • Construction Class and Foundation Type • Occupancy/Use Code • Number of Stories • Building Value • First floor height above LAG • Field Visit and Photos • Elevation Certificates • Effective FIRM Date
User defined challenges…and solutions • Loaded at the study region level • Not currently supported in CDMS • Loss of data precision, XY accuracy (flood model only) • Applying non-default depth damage functions • Database attribute requirements • Study region size • First floor height above grade
Hazus Versatility • Hazus has evolved into a multifaceted planning tool • Regionally relevant Hazus models can be used for: • Public information • To support benefit cost analyses for mitigation grant applications • Risk based analysis of capital projects • Risk Assessment • “What if” scenarios • Planning (mitigation, emergency management, COOP, debris management)
Public Outreach • Hazus is a powerful public outreach tool • To gauge peoples perception of risk, you need to be able to show them how a hazard may impact them personally (“I never new !”) • A regionally relevant risk assessment is the key. • Can really promote the concept of mitigation • “Have you thought about……?” • People like having access to this type of information • Very media friendly!
Hazus and BCAR • You want to apply for a mitigation grant for a flood hazard mitigation project. • You need to perform a BCA. • But, you don’t have historical loss data in the form of insurance claims or disaster records. • You don’t have a flood insurance study. • What can you do? • Hazus
Hazus and BCAR • Hazus can be used to generate “expected” or “Historical” loss results that can be plugged in to the Damage Frequency module of BCAR • Keys • Must be a level 2,user defined module • Must be able to construct depth grids form creditable source ( H&H study, surveyed high water marks from historical events. • Recurrence intervals • Good data on inventory-(i.e. assessors data, elevation certificates, construction cost guides)
Risk Based Analysis of Capital Projects • Can use Hazus to perform “alternatives” analysis of capital projects. • Can compare losses avoided from one alternative to another. • “what if” scenarios • Can be a great tool to illustrate project benefits to garner political support. • Keys: • Same as mentioned for BCAR support
Project Example-Outreach Ada County, Idaho • 30,000 user defined facilities were loaded into Hazus • Detailed structure information was extracted from County Assessor data. • Utilized LiDAR for depth grid production • Critical/essential facilities defined by the County were used in place of the Hazus defaults. • Set up Hazus work stations at public open houses. • Each citizen received a printout of property specific information relating to dam failure ,flood and earthquake.
Project Example-BCAR Project Exodus-Tillamook Bay, OR • FEMA 406 mitigation project • Over 500 used defined facilities. • Used pre and post project depth grids from H&H study (historic events). • Inventory was based on assessor’s data. • Replacement cost was updated using national cost estimation guides. • Loss results were validated • Hazus results were plugged into DFA module of BCAR.
Project ExampleRisk Based Analysis of Capital Projects King County, WA 180th-200th Levee alternative analysis • Used Hazus and BCAR to look at impacts for 3 setback levee alignments, plus an existing condition analysis. • Hazus used to model pre and post project impacts. • BCAR used to calculate annualized avoided damages. • Analysis included levee breach probabilities. • Analyzed 4 flows, 3 dam operational scenarios, for 4 levee alignments (that is 48 sets of depth grids!) • Over 1900 user defined facilities
What we have found….. • The potential applications for Hazus at the local level are many. • The key’s are: • Good data ! • Thorough understanding of the application’s within the model- (knowledge of its strengths and limitations). • Ability to validate results • FEMA should acknowledge the versatility of Hazus in all of its programs. • Historic loss data is not always available. Then what?
