HAND contour: A new proxy predictor of inundation extent
Tools for accurately predicting environmental risks, such as the location and spatial extent of potential inundation, are not widely available. A dependence on calibration and a lack of available flood data have prevented the widespread application of existing hydrodynamic methods for predicting the...
| Autor principal: | Nobre, Antônio Donato |
|---|---|
| Outros Autores: | Cuartas, Luz Adriana, Momo, Marcos Rodrigo, Severo, Dirceu Luís, Pinheiro, Adílson, Nobre, Carlos Afonso |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Hydrological Processes
2020
|
| Assuntos: | |
| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/17382 |
| id |
oai:repositorio:1-17382 |
|---|---|
| recordtype |
dspace |
| spelling |
oai:repositorio:1-17382 HAND contour: A new proxy predictor of inundation extent Nobre, Antônio Donato Cuartas, Luz Adriana Momo, Marcos Rodrigo Severo, Dirceu Luís Pinheiro, Adílson Nobre, Carlos Afonso Drops Forecasting Hazards Mapping Environmental Risks Flood Potential Hand Model High Resolution Maps Inundation Mappings Poor Information Terrain Modeling Topographical Contours Floods Contour Map Flood Forecasting Flooding Modeling Terrain Topographic Mapping Brasil Tools for accurately predicting environmental risks, such as the location and spatial extent of potential inundation, are not widely available. A dependence on calibration and a lack of available flood data have prevented the widespread application of existing hydrodynamic methods for predicting the extent of inundation. We use the height above the nearest drainage (HAND) terrain model to develop a simple static approach for mapping the potential extent of inundation that does not depend on flood observations and extends beyond methods for mapping low-lying areas. While relying on the contour concept, the method utilizes drainage-normalized topography and flowpaths to delineate the relative vertical distances (drop) to the nearest river. The HAND-delineated relative drop is an effective distributed predictor of flood potential, which is directly related to the river stage height. We validated the new HAND contour approach using a flood event in Southern Brazil for which high-resolution maps were available. The results indicated that the flood hazard-mapping method accurately predicted the inundation extent of the channel carrying the flood wave and the channels influenced by flooding. For channels positioned outside of the flood-wave area, the method overestimated the actual flood extent. As an original static assessment of floodwaters across the landscape, the HAND contour method could be used to map flood hazards in areas with poor information and could promote the development of new methods for predicting hydrological hazards. © 2016 John Wiley & Sons, Ltd. 2020-06-15T21:42:03Z 2020-06-15T21:42:03Z 2016 Artigo https://repositorio.inpa.gov.br/handle/1/17382 10.1002/hyp.10581 en Volume 30, Número 2, Pags. 320-333 Restrito Hydrological Processes |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| topic |
Drops Forecasting Hazards Mapping Environmental Risks Flood Potential Hand Model High Resolution Maps Inundation Mappings Poor Information Terrain Modeling Topographical Contours Floods Contour Map Flood Forecasting Flooding Modeling Terrain Topographic Mapping Brasil |
| spellingShingle |
Drops Forecasting Hazards Mapping Environmental Risks Flood Potential Hand Model High Resolution Maps Inundation Mappings Poor Information Terrain Modeling Topographical Contours Floods Contour Map Flood Forecasting Flooding Modeling Terrain Topographic Mapping Brasil Nobre, Antônio Donato HAND contour: A new proxy predictor of inundation extent |
| topic_facet |
Drops Forecasting Hazards Mapping Environmental Risks Flood Potential Hand Model High Resolution Maps Inundation Mappings Poor Information Terrain Modeling Topographical Contours Floods Contour Map Flood Forecasting Flooding Modeling Terrain Topographic Mapping Brasil |
| description |
Tools for accurately predicting environmental risks, such as the location and spatial extent of potential inundation, are not widely available. A dependence on calibration and a lack of available flood data have prevented the widespread application of existing hydrodynamic methods for predicting the extent of inundation. We use the height above the nearest drainage (HAND) terrain model to develop a simple static approach for mapping the potential extent of inundation that does not depend on flood observations and extends beyond methods for mapping low-lying areas. While relying on the contour concept, the method utilizes drainage-normalized topography and flowpaths to delineate the relative vertical distances (drop) to the nearest river. The HAND-delineated relative drop is an effective distributed predictor of flood potential, which is directly related to the river stage height. We validated the new HAND contour approach using a flood event in Southern Brazil for which high-resolution maps were available. The results indicated that the flood hazard-mapping method accurately predicted the inundation extent of the channel carrying the flood wave and the channels influenced by flooding. For channels positioned outside of the flood-wave area, the method overestimated the actual flood extent. As an original static assessment of floodwaters across the landscape, the HAND contour method could be used to map flood hazards in areas with poor information and could promote the development of new methods for predicting hydrological hazards. © 2016 John Wiley & Sons, Ltd. |
| format |
Artigo |
| author |
Nobre, Antônio Donato |
| author2 |
Cuartas, Luz Adriana Momo, Marcos Rodrigo Severo, Dirceu Luís Pinheiro, Adílson Nobre, Carlos Afonso |
| author2Str |
Cuartas, Luz Adriana Momo, Marcos Rodrigo Severo, Dirceu Luís Pinheiro, Adílson Nobre, Carlos Afonso |
| title |
HAND contour: A new proxy predictor of inundation extent |
| title_short |
HAND contour: A new proxy predictor of inundation extent |
| title_full |
HAND contour: A new proxy predictor of inundation extent |
| title_fullStr |
HAND contour: A new proxy predictor of inundation extent |
| title_full_unstemmed |
HAND contour: A new proxy predictor of inundation extent |
| title_sort |
hand contour: a new proxy predictor of inundation extent |
| publisher |
Hydrological Processes |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/17382 |
| _version_ |
1787144132428300288 |
| score |
11.653393 |