Simple download service (Atom) of the dataset: Flooding areas outside PPRI in Haute-Garonne

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Dataset information

Country of origin
Updated
2022.01.11 00:00
Created
Available languages
French
Keywords
Quality scoring

Dataset description

Natural risk flooding from river overflow, outside RPP areas. Envelope zones of all known floods, either by modelling or by field observation. WARNING: As a result of their acquisition, the contours of flood zones (and associated data) are strictly informative and are intended to be exploited on scales between 1/10 000 and 1/100 000. This mapping has no regulatory scope and cannot replace an urban planning document such as the Soil Occupancy Plan (POS) or the Natural Risk Prevention Plan (PPRN). Another limitation of the study is the type of flood studied: the overflow of the watercourse. Floods have not been mapped by rising water or of the type of urban storm runoff. The presence of water in a bowl bottom, for example a doline, is another natural hydrological phenomenon and is therefore not shown on this map. The mapping is very complete but is not exhaustive: — very strong but very localised rains (thunderstorms) can cause locally powerful floods but which very quickly lose this power downstream of the basin. The phenomenon is so punctual in time and space (it can happen everywhere) that it is not possible to map it. — some streams or “rus”, usually the smallest, have not been studied. IMPORTANT: This layer is originally a layer created by DREAL (CIZI), but it is refined by DDT31 using field survey data
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