2014 journal article

Hydraulic Modeling of Extreme Hydrologic Events: Case Study in Southern Virginia

Journal of Hydraulic Engineering, 140(12), 05014007.

co-author countries: United States of America πŸ‡ΊπŸ‡Έ
author keywords: Flood routing; Hydraulic models; One dimensional flow; River flow; Inundation mapping; Probable maximum flood; Sediment transport; Uncertainty analysis
Source: Crossref
Added: February 5, 2020

AbstractA comprehensive hydraulic modeling effort that was applied to two rural watersheds in southern Virginia is presented in this paper. The 10-, 50-, 100-, and 500-year storms and the probable maximum flood (PMF), are considered in this study with the objectives of assessing the impact of extreme hydrologic events through the generation of inundation maps, characterizing the sediment transport process under severe flooding conditions, and quantifying the uncertainty associated with the floodplains boundary roughness and its influence on the results. The employed methodology includes the construction of a river terrain model that combines geospatial and field-collected data, a calibration procedure based on regression equations and developed stage-discharge predictor curves, and unsteady flow simulations utilizing discharge hydrographs produced by an event-based hydrologic model. The results highlight the severe flooding conditions associated with the PMF and the necessity of considering it as the wors...