Preliminary flood-duration frequency estimates using naturalized streamflow records for the Willamette River Basin, Oregon
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Abstract
In this study, “naturalized” daily streamflow records, created by the U.S. Army Corps of Engineers and the Bureau of Reclamation, were used to compute 1-, 3-, 7-, 10-, 15-, 30-, and 60-day annual maximum streamflow durations, which are running averages of daily streamflow for the number of days in each duration. Once the annual maximum durations were computed, the floodduration frequencies could be estimated. The estimated flood-duration frequencies correspond to the 50-, 20-, 10-, 4-, 2-, 1-, 0.5-, and 0.2-percent probabilities of their occurring or being exceeded each year. For this report, the focus was on the Willamette River Basin in Oregon, which is a subbasin of the Columbia River Basin. This study is part of a larger one encompassing the entire Columbia Basin.
Suggested Citation
Lind, G.D., and Stonewall, A.J., 2018, Preliminary flood-duration frequency estimates using naturalized streamflow records for the Willamette River Basin, Oregon: U.S. Geological Survey Open-File Report 2018-1020, 17 p., https://doi.org/10.3133/ofr20181020.
ISSN: 2331-1258 (online)
Study Area
Table of Contents
- Abstract
- Introduction
- Methods
- Summary
- References Cited
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Preliminary flood-duration frequency estimates using naturalized streamflow records for the Willamette River Basin, Oregon |
| Series title | Open-File Report |
| Series number | 2018-1020 |
| DOI | 10.3133/ofr20181020 |
| Year Published | 2018 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Publisher location | Reston, VA |
| Contributing office(s) | Oregon Water Science Center |
| Description | iv, 17 p. |
| Country | United States |
| State | Oregon |
| Other Geospatial | Willamette River Basin |
| Online Only (Y/N) | Y |