Flood-frequency Analysis in the Midwest: Addressing Potential Nonstationary Annual Peak-Flow Records

The overall goal of this study is to evaluate the combined effects of multidecadal climatic persistence (including hydroclimatic shifts), gradual climate change, and land-use change on peak-flow frequency analyses in the multi-state region in the Midwest. This study is intended to provide a framework for addressing potential nonstationarity issues in statewide flood-frequency updates that commonly are conducted by the United States Geological Survey (USGS) in cooperation with state DOTs throughout the nation on an ongoing basis. This will be achieved through the following primary objectives: (1) Define spatial and temporal characteristics of climatic persistence/change affecting annual peak flows in the multi-state region. (2) Develop and apply a statistical methodology for estimating changes in peak-flow frequency distributions in the multi-state region in relation to climatic persistence/change and urbanization; the effects of rural and land-use change will only be investigated in an exploratory manner. (3) Investigate methods for addressing regional climatic persistence/change and land-use change in peak-flow frequency analysis. To the extent possible, estimates of trend-adjusted flood magnitudes for various exceedance levels (such as the 10-percent or 1-percent annual exceedance probability) will be provided for comparison to previously published estimates.

Language

  • English

Project

  • Status: Programmed
  • Funding: $667200
  • Contract Numbers:

    TPF-5(460)

  • Sponsor Organizations:

    Illinois Department of Transportation

    2300 S. Dirksen Parkway
    Springfield, IL  United States  62764

    Iowa Department of Transportation

    800 Lincoln Way
    Ames, IA  United States  50010

    Minnesota Department of Transportation

    Transportation Building
    395 John Ireland Boulevard
    St Paul, MN  United States  55155

    Missouri Department of Transportation

    1617 Missouri Blvd.
    P.O. Box 270
    Jefferson City, MO  United States  65102

    South Dakota Department of Transportation

    700 East Broadway Avenue
    Pierre, SD  United States  57501

    Wisconsin Department of Transportation

    PO Box 7910
    4802 Sheboygan Avenue, Room 104
    Madison, WI  United States  53707-7910
  • Project Managers:

    Huft, David

  • Start Date: 20200917
  • Expected Completion Date: 0
  • Actual Completion Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 01747750
  • Record Type: Research project
  • Source Agency: Federal Highway Administration
  • Contract Numbers: TPF-5(460)
  • Files: RiP, USDOT, STATEDOT
  • Created Date: Aug 12 2020 3:17PM