HAZUS-MH Flood Model
- New Features in HAZUS-MH MR3 Flood Model
- HAZUS-MH Flood Model Applications
- HAZUS-MH MR3 Patch 1 Adjustments and Improvements
The HAZUS-MH Flood Model allows planners and other practitioners to carry out a wide range of flood hazard analyses, including:
- Studies of specific return intervals of floods (e.g., 100-year return interval).
- Studies of discharge frequencies, including analysis of discharges from specific streams and the exposure to buildings and population from the resultant flooding.
- Studies of annualized losses from flooding.
- Quick Look assessments, which allows the user to quickly evaluate potential flooding from specific flood depths at specific locations.
- What if scenarios, which allows users to evaluate the consequences of specific actions, such as the introduction of flow regulation devices, acquisition of flood-prone properties, and other mitigation measures.
The flood loss estimation methodology consists of two modules that carry out basic analytical processes: flood hazard analysis and flood loss estimation analysis. The flood hazard analysis module uses characteristics, such as frequency, discharge, and ground elevation to estimate flood depth, flood elevation, and flow velocity. The flood loss estimation module calculates physical damage and economic loss from the results of the hazard analysis.
New Features in HAZUS-MH MR3 Flood Model
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Commercial data updated to Dun & Bradstreet 2006.
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Building valuations updated to R.S. Means 2006.
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Building counts based on census housing unit counts for RES1 (single-family dwellings) and RES2 (manufactured housing) instead of calculated building counts.
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User-supplied flood maps and flood depth grids import into the "quick look" and "enhanced quick look" functions.
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Optimized building analysis.
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Revised hazard menu graphic user interface.
HAZUS-MH Flood Model Applications
The Flood Model has been widely used by State and local officials for risk assessment and mitigation planning, including:
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Pennsylvania Statewide Flood Hazard Study (2007), which includes damage estimates for 10-, 50-, 100-, 200- and 500-year flood events.
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State of Maryland Flood Hazard Study (2006), which includes a vulnerability assessment of the state's built environment to riverine and coastal flooding.
HAZUS-MH MR3 Patch 1 Adjustments and Improvements
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A message has been added to alert the user when memory becomes too low during hydraulic analysis. The user then should close HAZUS using the Task Manager and restart HAZUS. The user then can continue the hydraulic analysis from the point at which memory became too low by selecting the scenario and restarting hydraulics (Delineate Floodplain).
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For a riverine/coastal flood hazard type, riverine and coastal hydraulic analyses can be run with non-matching return periods. For example, a 100-year return period for the riverine analysis and a 200-year return period for the coastal analysis.
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Coastal analysis is fully operable with the QuickLook feature.
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Coastal analysis results are available for building economic loss in terms of both full replacement values and depreciated values.
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Error messages encountered when running the analysis for user-defined facilities have been eliminated by eliminating zero values for the number of stories.
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Field names for vehicle dollar exposure have been updated.
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The map layer for thematic mapping now shows the same values as the attribute table.
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The HAZUS-MH MR3 Flood Model menu now appears for study regions imported from HAZUS-MH MR2.
Additionally, HAZUS can be installed on ArcEditor.
Last Modified: Monday, 10-Dec-2007 14:32:57 EST
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