Accession Number:

ADA390460

Title:

HEC-FDA Sensitivity and Uncertainty Analysis

Descriptive Note:

Research Document 46

Corporate Author:

HYDROLOGIC ENGINEERING CENTER DAVIS CA

Personal Author(s):

Report Date:

2001-02-01

Pagination or Media Count:

140.0

Abstract:

The U.S. Army Corps of Engineers software HEC-FDA is a tool that uses Risk-based Analysis to compute Expected Annual Damage EAD for flood damage reduction studies. EAD reduction is computed as the difference between EAD with and without alternative projects, a quantity used to aid in flood damage reduction project selection. Depending on the time and money spent in the collection and preparation of the input data sets, relatively lesser or greater accuracy can be achieved in EAD computation. Sets of numerical experiments on synthetic large and small drainage basins show that EAD is differently sensitive to the major input functions to HEC-FDA and their associated uncertainties depending on drainage area and the shape of the damage-stage curve. The results from the synthetic data sets are verified by two case studies on the Blue River, Missouri and the Chippewa River, Georgia. The relative sensitivity of EAD to its input functions and associated uncertainties can be used in federal investment decision-making for flood damage reduction projects.

Subject Categories:

  • Hydrology, Limnology and Potamology
  • Computer Programming and Software

Distribution Statement:

APPROVED FOR PUBLIC RELEASE