Creating and coupling a high-resolution DTM with a 1-D hydraulic model in a GIS for scenario-based assessment of avulsion hazard in a gravel-bed river

Aggett, G. R.; Wilson, John P.

doi:10.1016/j.geomorph.2009.06.034

Cited by 68 publications

(70 citation statements)

References 44 publications

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“…After the integration of a scanning mechanism with lidar and an inertial measurements unit with GPS in the early 1990s, it has been possible to use first airborne laser scanning (ALS), then MLS data, in addition to static based terrestrial laser scanning (TLS), to improve the measurement and modeling of fluvial environments (e.g., [2][3][4][5][6][7][8][9][10][11][12]). High-resolution ALS provides detailed information on topographical features of fluvial environments that influence the river hydraulics, giving, therefore, the potential to improve existing hydraulic models (e.g., [13][14][15][16][17]). Furthermore, TLS can be applied to measure the grain-scale surface roughness needed in river flow modeling.…”

Section: Introductionmentioning

confidence: 99%

“…Heritage and Milan [7] showed that finer resolution of roughness leads to a better prediction of modeled flow velocity. The improved topographical data allows for better planning of the management of river hydraulics and erosion control (e.g., [14,18]) and better analysis of different flooding scenarios [16]. Alho et al [11,19] showed that MLS offered a very effective method for surveying riverine topography compared to traditional TLS.…”

Section: Introductionmentioning

confidence: 99%

“…In addition to static modeling of the riverine topography, there is a great need to map the changes in riverine topography, since the geomorphology and topography of the river channel and surrounding floodplain are affected by the fluvial erosion and deposition processes, which vary from a constant grain-scale displacement to large-scale flood-related avulsions [7,14,31].…”

Section: Introductionmentioning

confidence: 99%

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Mapping Topography Changes and Elevation Accuracies Using a Mobile Laser Scanner

et al. 2011

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Laser measurements have been used in a fluvial context since 1984, but the change detection possibilities of mobile laser scanning (MLS) for riverine topography have been lacking. This paper demonstrates the capability of MLS in erosion change mapping on a test site located in a 58 km-long tributary of the River Tenojoki (Tana) in the sub-arctic. We used point bars and river banks as example cases, which were measured with the mobile laser scanner ROAMER mounted on a boat and on a cart. Static terrestrial laser scanner data were used as reference and we exploited a difference elevation model technique for describing erosion and deposition areas. The measurements were based on data acquisitions during the late summer in 2008 and 2009. The coefficient of determination (R 2 ) of 0.93 and a standard deviation of error 3.4 cm were obtained as metrics for change mapping based on MLS. The root mean square error (RMSE) of MLS-based digital elevation models (DEM) for non-vegetated point bars ranged between 2.3 and 7.6 cm after correction of the systematic error. For densely vegetated bank areas, the ground point determination was more difficult resulting in an RMSE between 15.7 and 28.4 cm. OPEN ACCESSRemote Sens. 2011, 3 588

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Mapping Topography Changes and Elevation Accuracies Using a Mobile Laser Scanner

et al. 2011

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“…Risk management plans can implement this information to determine what precautions should be taken where. As the climate shifts, however, flood studies become increasingly important [1][2][3][4][5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Kalibre edilmiş ve doğrulanmış 1D ve 1D/2D model kullanılarak Cedar Nehri taşkın yayılım alanlarının tespiti

Sönmez¹,

Doğan²

2016

SAUFenBilDer

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In 2008 flooding occurred over a majority of Iowa, damaging homes, displacing residents, and taking lives. Estimated damages to the state totaled $10 billion. One of the city affected by the flood was Waverly City, USA which is the Cedar River flow in side of it. One-dimensional/two-dimensional (1D/2D)-Mike Flood hydrodynamic model and 1D-HecRAS hydraulic model were developed for flood analyses in Waverly City. For developing both models, channel geometry was obtained from bathymetric surveys and combined with surface topography obtained from Light Detection and Ranging surveys. Roughness parameters were estimated using land use data from the National Land Cover Dataset and aerial photos. Calibration of roughness on floodplain and channels represents an important issue to determine flood inundation area. Both models were calibrated and validated with 2008 flood. The riverbed was validated with high water levels measured after flood. The floodplain was validated with photos, which was taken during flood from airplane. After calibration and validation, results were compared to choose the best one. Return period flood discharge were calculated and run with best inundation model for determine flood inundation maps. These maps can be used by residents and planners in Waverly City to help make informed decisions about potential risk from floods. Elde edilen taşkın yayılım haritaları ile Waverly şehir plancılarının ve sakinlerinin potansiyel taşkın riskini bilerek buna göre kararlar almaları konusunda yardımcı olacağı düşünülmektedir.

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“…Most often, these elements are indicated in the analysis using hydraulic models [10][11][12][13][14][15][16]. To make the application of these models possible, one must calculate flows with a given probability.…”

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confidence: 99%

Analysis of Probable Flows Based on the Rainfall-Runoff Model for Flood Scenarios: a Case Study of the Losse River Catchment (Germany)

Barszcz¹

2016

Pol. J. Environ. Stud.

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Directive 2007/60/EC [1] sets the framework of actions aimed at restricting the negative consequences connected with floods within the European Union. The implementation of the Directive in the Polish legal system was regulated by the amended "Water Law" Act of 5 January 2011 [2], which required member states to construct flood hazard maps and flood risk maps showing the potential adverse consequences associated with different flood scenarios by December 2013. Some of the first EU projects testing the methodology of developing such maps were the LABEL [3] and Flood Wise projects [4]. The methodology for compiling such maps in Poland was specified by a regulation [5]. Flood hazard maps contain information Pol. J. Environ. Stud. Vol. 25, No. 4 (2016), 1403-1413 AbstractThe procedure of the rainfall-runoff (R-R) model, based on the instantaneous unit hydrograph (IUH) method and used to calculate the probable flows in 8 profiles of the Losse river (on the stretch from 5+476 to 7+596 km) for three flood scenarios (Qextreme, Q1% and Q10%), has been presented in this work. A computer program developed by the author was used to conduct the analyses, enabling the flows to be simultaneously calculated for each of the analyzed profiles in response to 10 rainfall events of varying duration and a given exceedance probability.The obtained values of probable flows were recalculated into corresponding water table levels using the WSP-ASS program (Water Level Program). The extent of the flooding and water depths for three flood scenarios were calculated based on the levels of the water table and terrain elevation data ("Digital Terrain Model"). As a final effect of the analyses, flood hazard maps for the analyzed stretch of the Losse River were constructed, enabling the consequences of flooding to business activities, the infrastructure, the environment, and human health and life to be assessed.

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Creating and coupling a high-resolution DTM with a 1-D hydraulic model in a GIS for scenario-based assessment of avulsion hazard in a gravel-bed river

Cited by 68 publications

References 44 publications

Mapping Topography Changes and Elevation Accuracies Using a Mobile Laser Scanner

Mapping Topography Changes and Elevation Accuracies Using a Mobile Laser Scanner

Kalibre edilmiş ve doğrulanmış 1D ve 1D/2D model kullanılarak Cedar Nehri taşkın yayılım alanlarının tespiti

Analysis of Probable Flows Based on the Rainfall-Runoff Model for Flood Scenarios: a Case Study of the Losse River Catchment (Germany)

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