Abstract Extensive impervious area and the man-made streams are characteristics of urban areas. In recent years, rapid urbanization has led to change rural areas into areas, runoff will increase as result spread growth Land use changes, increasing urbanization, unauthorized construction, inefficiency sewage system increased surface in have significant impacts on inundation hazard. Therefore, ma...

In this research a method to calibrate a river hydraulic model (HEC-RAS) using ground-based measurements of an observed flash flood is presented. Applications of the ground truth measurement of flood water depths and flooded areas within a reach of Neka River in Northern of Iran are discussed. The model is calibrated using the Manning's roughness coefficient based on 200-year flood event that t...

Abstract The capacity of the Saddang River Irrigation Canal will be increased by 30% to accommodate long-term irrigation discharge needs. Analysis hydraulic model and channels is examined in this study. High resolution LiDAR Digital Elevation HEC-RAS Model are used estimate flow depth velocities event rain with extreme intensity. solves 2-D depth-averaged St.Venant equations that mainly for riv...

First posted July 26, 2021 Revised January 7, 2022 For additional information, contact: Director, Central Midwest Water Science Center U.S. Geological Survey1400 Independence Road Rolla, Missouri 65401 The Survey (USGS), in cooperation with the City of Grandview, Missouri, assessed flooding Little Blue River at Grandview resulting from varying precipitation magnitudes and durations expected lan...