A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Flood Study of the Columbia River Basin
This paper presents a novel approach for assessing flood risks in the Columbia River Basin. Colder Associates Inc. (Golder) conducted a study to assist our client in making decisions regarding flood insurance for a site in St. Helens, OR, near River Kilometer 140.8 of the Columbia River. A hydrologic model was used to combine historical hydrographs from tributary sub-basins covering the entire Columbia River Basin upstream of Longview, WA, which is very near St. Helens. The effects of the 5 largest flood control dams were included in the model. Extensive calibration was performed to ensure appropriate statistical similarity to historical behavior. The magnitudes of the contributing hydrographs were modified using a Monte Carlo analysis with a sufficient number of realizations to estimate the 100- and 500-year events with 95% confidence. Results from the hydrologic model were input to a HEC-UNET (UNET) hydraulic model of the Lower Columbia River to predict river flood stages at St. Helens.
Flood Study of the Columbia River Basin
This paper presents a novel approach for assessing flood risks in the Columbia River Basin. Colder Associates Inc. (Golder) conducted a study to assist our client in making decisions regarding flood insurance for a site in St. Helens, OR, near River Kilometer 140.8 of the Columbia River. A hydrologic model was used to combine historical hydrographs from tributary sub-basins covering the entire Columbia River Basin upstream of Longview, WA, which is very near St. Helens. The effects of the 5 largest flood control dams were included in the model. Extensive calibration was performed to ensure appropriate statistical similarity to historical behavior. The magnitudes of the contributing hydrographs were modified using a Monte Carlo analysis with a sufficient number of realizations to estimate the 100- and 500-year events with 95% confidence. Results from the hydrologic model were input to a HEC-UNET (UNET) hydraulic model of the Lower Columbia River to predict river flood stages at St. Helens.
Flood Study of the Columbia River Basin
Kirschbaum, Robin L. (author) / Brown, Michael L. (author)
Joint Conference on Water Resource Engineering and Water Resources Planning and Management 2000 ; 2000 ; Minneapolis, Minnesota, United States
Building Partnerships ; 1-10
2000-09-11
Conference paper
Electronic Resource
English
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