Introduction
This is the HEC-FDA User Manual for Version 2.0 of the HEC-FDA software. In this manual, you'll find brief descriptions of the software components and steps on how to use the software. The HEC-FDA Quick Start Guides and HEC-FDA Training spaces contain more background and quick reference pages for newer HEC-FDA users. We suggest that highly experienced users skim the introduction and read the chapters on impact area scenarios, alternatives, and alternative comparison reports. A list of the pages we recommend for highly experienced users can be found below.
The example study data used throughout this user manual is described here: Example Study Data.
What is HEC-FDA?
The Flood Damage Reduction Analysis (HEC-FDA) software developed by the U.S. Army Corps of Engineers' (USACE) Hydrologic Engineering Center (CEIWR-HEC) provides the capability to perform an integrated hydrologic engineering and economic analysis during the formulation and evaluation of flood risk management plans. HEC-FDA is designed to assist USACE study members in using risk assessment procedures for formulating and evaluating flood risk management measures pursuant to pertinent policy and guidance (EM 1110-2-1619, ER 1105-2-101). The software assists USACE staff in analyzing the economics of flood risk management projects. The HEC-FDA software:
- Stores hydrologic, hydraulic, and economic data necessary for an analysis,
- Provides tools to visualize data and results,
- Computes expected annual damage (EAD) and equivalent annual damage (EqAD) damages,
- Computes annual exceedance probability (AEP) and assurance as required for NFIP levee certification, and
- Implements the risk assessment procedures described in EM 1110-2-1619 and provides outputs to the user that allow teams to describe results in compliance with ER 1105-2-101.
HEC-FDA software follows functional elements of a study involving coordinated study layout and configuration, hydrologic and hydraulic engineering modeling, economic analyses, and plan formulation and evaluation. HEC-FDA is used continuously throughout the planning process as the study evolves from the base year without-project condition assessment through the assessments of alternative plans over their project life. Engineering modeling and portions of the economics are performed separately, but in a coordinated manner after specifying the study configuration and layout, and merged for the formulation and evaluation of the potential flood risk management plans.
Introduction Subsections
Pages for Experienced Users
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