Cyclone Batsirai (February 2022)
20 communes under a natural disaster declaration (flood)
40 protected animal species recorded in the declared communes in the ten years before the flood
26 animal species threatened on the national Red List, protected or not
birds: by their population in the flood's season
- Dates per the orders
- 2 to 4 February 2022
- Départements
- La Réunion
- Flood type
- river flooding, runoff or mudflow
- Heaviest rainfall
- 1,049.9 mm
- in one day (La Réunion, 3 February 2022), COMMERSON station · per Météo-France
- 29 January 2022: 2.4 mm
- 30 January 2022: 0 mm
- 31 January 2022: 0 mm
- 1 February 2022: 73.2 mm
- 2 February 2022: 612.1 mm
- 3 February 2022: 1,049.9 mm
- 4 February 2022: 195 mm
- 5 February 2022: 113.4 mm
- 6 February 2022: 4 mm
1,735.2 mm from 1 to 3 Feb, up to the wettest day
The flood's dates
- Peak discharge
- 805 m³/s
- La rivière des Marsouins, Bras Principal, à Saint-Benoît [Centre-Ville], on 4 February 2022 · provisional Hub'Eau value, it can be revised
- Extent
- communes under a natural disaster declaration (flood)
Protected species recorded in the declared communes
Observations recorded in the ten years before the flood, some known only to within a few kilometres, up to 10 km, when their published position is blurred or given by grid square. They tell which species were reported there, not what became of each animal.
2,497 species recorded in the declared communes
40 protected animal species among them and 150 protected plants
26 animal species threatened on the national Red List, protected or not (vulnerable, endangered or critically endangered)
32 Birds
3 Reptiles
3 Mammals, bats included
2 Insects
For birds, the category is the one of their population at the flood's season (breeding, wintering or passage birds): a bird with no dated record in the declared communes in that season in the GBIF data has none, and the breeding category needs at least two dated records in June or July. In the migration season (March, August to October), a bird that neither the passage list nor the wintering list assesses takes its breeding category only if it was recorded at least twice in the declared communes in June or July. The list used is named under each species.
The most notable protected animal species
Species with at least three observations (for a bird, three in the months that give it its category, and no bird without a record at the flood's season), the most threatened first, then the most recorded. An observation is a published record: it can count one or several animals, and the same animal can be noted several times. When their published position is imprecise, blurred or given by grid square, they are said to be "in the communes or nearby".
Birds
The observations cover every season: a migrant bird recorded there may have been away on the day of the flood.
Mammals, bats included
Photos: Wikimedia Commons, each under its own licence (CC BY, CC BY-SA, CC0, public domain). Credit for each photo
In the water's path
Establishments registered today in the communes declared for this flood, taken whole, at their declared address or at the point Géorisques gives. They were not necessarily there on the day of the flood, and the dataset does not say whether they were flooded. An ICPE-classified farm can also be in the SIRENE register: these counts do not add up.
61 ICPE-classified livestock farms located in the declared communes
Géorisques · ICPENo livestock business in the SIRENE register based in the declared communes
SIRENE register · InseeNo veterinary practice based in the declared communes
SIRENE register · Insee59 animal protection associations based in the declared communes
National register of associations8 wildlife associations based in the declared communes
National register of associations
A wildlife association is an association whose declared purpose in the national register of associations is the preservation of wildlife: the register does not say whether it runs an authorised care centre.
The declared communes
20 communes declared a natural disaster (flood) for this flood, département by département.
La RéunionSee the 20 communes
Cilaos, Entre-Deux, L'Étang-Salé, La Plaine-des-Palmistes, La Possession, Le Port, Le Tampon, Les Avirons, Les Trois-Bassins, Petite-Île, Saint-Benoît, Saint-Denis, Saint-Joseph, Saint-Leu, Saint-Louis, Saint-Paul, Saint-Philippe, Saint-Pierre, Sainte-Rose, Salazie
This flood's data
In every file of the dataset, this flood carries the identifier EV-20220202-20220204-974.
The full dataset is released on 13 October at 6:00 (Paris time). Until then, we send it on request: presse@animalert.app.
Ask for the datasetpublic on 13 October at 6:00Recognised and listed
Public on data.gouv.fr on 13 October at 6:00
A project labelled by the French StateNational Resilience Day 2026 (Journée nationale de la résilience)
Registered with GBIFDerived dataset, DOI 10.15468/dd.ta4vkx