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Article

Using High-Density LiDAR Data and 2D Streamflow Hydraulic Modeling to Improve Urban Flood Hazard Maps: A HEC-RAS Multi-Scenario Approach

1
Institute for Interdisciplinary Research, Science Research Department, Alexandru Ioan Cuza University of Iaşi (UAIC), St. Lascăr Catargi 54, 700107 Iaşi, Romania
2
Department of Geography, Faculty of Geography and Geology, Alexandru Ioan Cuza University of Iaşi (UAIC), Bd. Carol I 20A, 700505 Iaşi, Romania
3
Escuela de Organización Industrial (EOI), Av. de Gregorio del Amo 6, 28040 Madrid, Spain
4
National Administration Romanian Waters, Siret Water Basin Administration, St. Cuza Voda 1, 600274 Bacău, Romania
*
Author to whom correspondence should be addressed.
Water 2019, 11(9), 1832; https://doi.org/10.3390/w11091832
Received: 31 July 2019 / Revised: 24 August 2019 / Accepted: 1 September 2019 / Published: 3 September 2019
(This article belongs to the Special Issue Recent Advances in the Assessment of Flood Risk in Urban Areas)
The ability to extract streamflow hydraulic settings using geoinformatic techniques, especially in high populated territories like urban and peri-urban areas, is an important aspect of any disaster management plan and flood mitigation effort. 1D and 2D hydraulic models, generated based on DEMs with high accuracy (e.g., Light Detection and Ranging (LiDAR)) and processed in geographic information systems (GIS) modeling software (e.g., HEC-RAS), can improve urban flood hazard maps. In this study, we present a small-scale conceptual approach using HEC-RAS multi-scenario methodology based on remote sensing (RS), LiDAR data, and 2D hydraulic modeling for the urban and peri-urban area of Bacău City (Bistriţa River, NE Romania). In order to test the flood mitigation capacity of Bacău 1 reservoir (rB1) and Bacău 2 reservoir (rB2), four 2D streamflow hydraulic scenarios (s1–s4) based on average discharge and calculated discharge (s1–s4) data for rB1 spillway gate (Sw1) and for its hydro-power plant (H-pp) were computed. Compared with the large-scale flood hazard data provided by regional authorities, the 2D HEC-RAS multi-scenario provided a more realistic perspective about the possible flood threats in the study area and has shown to be a valuable asset in the improvement process of the official flood hazard maps. View Full-Text
Keywords: Light Detection and Ranging (LiDAR); HEC-RAS; 2D modeling; flood hazard; urban and peri-urban area Light Detection and Ranging (LiDAR); HEC-RAS; 2D modeling; flood hazard; urban and peri-urban area
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MDPI and ACS Style

Mihu-Pintilie, A.; Cîmpianu, C.I.; Stoleriu, C.C.; Pérez, M.N.; Paveluc, L.E. Using High-Density LiDAR Data and 2D Streamflow Hydraulic Modeling to Improve Urban Flood Hazard Maps: A HEC-RAS Multi-Scenario Approach. Water 2019, 11, 1832. https://doi.org/10.3390/w11091832

AMA Style

Mihu-Pintilie A, Cîmpianu CI, Stoleriu CC, Pérez MN, Paveluc LE. Using High-Density LiDAR Data and 2D Streamflow Hydraulic Modeling to Improve Urban Flood Hazard Maps: A HEC-RAS Multi-Scenario Approach. Water. 2019; 11(9):1832. https://doi.org/10.3390/w11091832

Chicago/Turabian Style

Mihu-Pintilie, Alin, Cătălin I. Cîmpianu, Cristian C. Stoleriu, Martín N. Pérez, and Larisa E. Paveluc 2019. "Using High-Density LiDAR Data and 2D Streamflow Hydraulic Modeling to Improve Urban Flood Hazard Maps: A HEC-RAS Multi-Scenario Approach" Water 11, no. 9: 1832. https://doi.org/10.3390/w11091832

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