However, it does not provide information about the water depth above the ground level. Flood depth varies from location to location based on the terrain–rainfall interaction. Risk estimation can be quantified on flood depth ( Rangari et al. The higher the flood depth, the more risk of damage to ecology, roads, buildings, and infrastructure. This makes flood depth analysis a distinct necessity. However, flood depth alone does not serve the purpose while analyzing the infrastructural damage. For example, high flood depth in uninhabited areas does not cause much damage to infrastructure compared to buildings with low to medium flood depth. Hence, flood depth levels around buildings and flood inundation maps can be used to identify locations where buildings require more maintenance than usual. Mosquera-Machado & Ahmad (2007) evaluated flood hazard (FH) for Atrato River, Quibdó, northwest Colombia. They employed geographic information systems (GIS), statistical approaches, and Hydrologic Engineering Center's-River Analysis System (HEC-RAS) for evolving three FH maps having different return periods (RPs). Water depths on the left and right banks were 3.7 and 3.1 m for a 50-year RP, which could be used as the basis for designing flood protection structures. (2009) applied Qual2 K with HEC-RAS 1D for assessing the water quality of a tidal river, northern Taiwan, and the models exhibited good agreement. (2011) employed HEC-RAS for the lower Tapi River to simulate the flow for 1998, 2003, and 2006. Simulated flows were closely matched with the observed data.
#Pcswmm 2d free
Qasim (2013) simulated free flow over the broad-crested single-step weir using HEC-RAS 1D.
0 kommentar(er)
