Estimates of the magnitude and frequency of floods are needed for engineering design of transportation and water-conveyance structures, flood-insurance studies, flood-plain management, and other water-resource purposes. In 2016, the U.S. Geological Survey estimated flood frequency and magnitude for selected streamgages in Alaska and conterminous basins in Canada and developed methods for estimating flood frequency and magnitude at ungaged streams (Curran and others, 2016). More current estimates of flood frequency are often needed for water-resource purposes, including estimating the annual exceedance probability of an observed flood peak.
About the collection
Available here are links to flood frequency analyses and selected observed flood probability data for drainage basins around Alaska and conterminous basins in Canada computed using methods and information documented in Curran and others (2016). Data are downloadable as ZIP packages organized by drainage basin. Data follow a standardized data and metadata format.
Index
| Drainage Basin | USGS site identification numbers | Final water year used in analysis |
|---|---|---|
| Fortymile River | 15320100, 15348000 | 2020 |
| Hulahula River | 15980000 | 2021 |
| Delta River | 15478449, 15478093 | 2022, 2023 |
Suggested Citation: Curran, J.H., 2022, Flood frequency data collection, Alaska and conterminous basins in Canada: U.S. Geological Survey data release, https://doi.org/10.5066/P9IZB7HH
Flood Frequency Studies in Alaska
Alaska Streamflow Statistics
- Overview
Estimates of the magnitude and frequency of floods are needed for engineering design of transportation and water-conveyance structures, flood-insurance studies, flood-plain management, and other water-resource purposes. In 2016, the U.S. Geological Survey estimated flood frequency and magnitude for selected streamgages in Alaska and conterminous basins in Canada and developed methods for estimating flood frequency and magnitude at ungaged streams (Curran and others, 2016). More current estimates of flood frequency are often needed for water-resource purposes, including estimating the annual exceedance probability of an observed flood peak.
About the collection
Available here are links to flood frequency analyses and selected observed flood probability data for drainage basins around Alaska and conterminous basins in Canada computed using methods and information documented in Curran and others (2016). Data are downloadable as ZIP packages organized by drainage basin. Data follow a standardized data and metadata format.
Index
Drainage Basin USGS site identification numbers Final water year used in analysis Fortymile River 15320100, 15348000 2020 Hulahula River 15980000 2021 Delta River 15478449, 15478093 2022, 2023 Suggested Citation: Curran, J.H., 2022, Flood frequency data collection, Alaska and conterminous basins in Canada: U.S. Geological Survey data release, https://doi.org/10.5066/P9IZB7HH
- Science
Flood Frequency Studies in Alaska
Flood frequency statistics for streamgages and methods for estimating flood frequency statistics at ungaged sites in Alaska and conterminous basins in Canada are presented in U.S. Geological Survey Scientific Investigations Report 2016-5024. This report revised methods for obtaining basin characteristics and regional skew, and presents new streamflow magnitude and frequency statistics for gaged...Alaska Streamflow Statistics
The USGS conducts various studies of streamflow statistics for data collected at streamflow-gaging stations. Streamflow statistics for gaged streams and methods for estimating those statistics for ungaged streams are used by water resource planners and managers for designing infrastructure, managing floodplains, and protecting life, property, and aquatic resources. The most recent USGS studies of... - Publications