Document Type

Article

Language

eng

Publication Date

10-2019

Publisher

Wiley

Source Publication

Journal of Flood Risk Management

Source ISSN

1753-318X

Abstract

Hurricane Harvey was an unprecedented event that resulted in immense damage to life and property. As a result, it is important to determine how this event, as well as past and future events like it, will impact engineering design equations that are based upon historical data, such as flood frequency analysis equations. This study seeks to contribute to this discussion by evaluating the extent to which Harvey influenced estimations of instantaneous peak discharges in rural ungauged basins in southeast Texas. Results indicate that Harvey significantly increased the computations of design floods using Log‐Pearson Type III analysis (e.g., 3–55% for 2‐year flood and 3–80% for the 100‐year flood). This subsequently impacted the estimation of instantaneous peak discharges through regional flood frequency analysis by up to 28%. These results highlight the influence that recent and future hurricanes can have on engineering design equations that are used for managing floodplains, assessing flood risk, and designing infrastructure such as levees, bridges, and culverts.

Comments

Accepted version. Journal of Flood Risk Management, Vol. 12, No. 51 (October 2019) : e12500. DOI. © 2019 Wiley. Used with permission.

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