Flood Exposure Maps for Buzi-Pungwe-Save (BuPuSa) Transboundary River Basins

OpenLISEM is an open-source hydrological model suited for the simulation of floods, flash floods and erosion events. The following sections provide an overview of the results from the OpenLISEM model used in the exposure mapping A 30x30m flood map (maximum flood height) for the BuPuSa region was developed for several points on the intensity-frequency-duration curve. This curve represents the extreme value analysis (EVA) for the rainfall across the BuPuSa area. Based on 50 years of historic rainfall data from TAMSAT the EVA is developed for a 1000 year period. From this different rainfall intensities area taken which are referred to at the return period. The statistical possibility of a certain rainfall intensity to happen once in X many years. Flood maps were developed for the following return periods: 1/2, 1/10, 1/50, 1/100 and 1/1000. In addition to 5 different return periods, two different scenarios were modeled. A short high intensity rainfall event that typically causes flash floods, and a longer term lower intensity rainfall event that typically causes fluvial (river) floods. These events were represented by respectively a 6h rainfall event and a 14 day rainfall event. As a result 10 different flood maps were developed.

Datos y Recursos

Cite this as

DOI:
10.63253/d1i0ax1n
IHP-WINS (2024). Flood Exposure Maps for Buzi-Pungwe-Save (BuPuSa) Transboundary River Basins [Data set]. UNESCO. https://doi.org/10.63253/d1i0ax1n
Published: 2025-08-20 | Publisher: UNESCO

Metadatos
INSPIRE
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Información básica
DOI https://doi.org/10.63253/d1i0ax1n
Tipo de recurso Conjunto de datos espacial
Fecha de creación 15-04-2025
Fecha de última modificación 20-08-2025
Mostrar histórico de cambios
Identificador de los metadatos Flood-Exposure-Maps-for-Buzi-Pungwe-Save-(BuPuSa)-Transboundary-River-Basins
Idioma de los metadatos Inglés
Temáticas (DCAT-AP)
Categoría del conjunto de alto valor (HVD)
Categoría temática ISO 19115 environment
Identificador alternativo
URI de palabras clave
Información espacial
Identificador INSPIRE
Temas INSPIRE
Identificador geográfico
Sistema de Referencia de Coordenadas
Tipo de representación espacial
Extensión espacial
Resolución espacial del dataset (m)
Procedencia
Declaración de linaje
Perfil de Metadatos
Conformidad
Conjunto de datos de origen
Frecuencia de actualización
Fuentes
Propósito
Pasos del proceso
Cobertura temporal (Inicio)
Cobertura temporal (Fin)
Notas sobre la versión
Versión
Vigencia del conjunto de datos
Parte responsable
Nombre del autor (Heredado) IHP-WINS
Nombre del mantenedor Jorgen Van Der Biest
Identificador del autor (Heredado)
Email del autor (Heredado) projas@cazalac.org
Identificador del mantenedor
Email del mantenedor j.van-der-biest@unesco.org
Web del mantenedor