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A major flood · 2026

Floods, Maine-et-Loire and 6 other départements, February 2026

Maine-et-LoireLoire-AtlantiqueIlle-et-VilaineSartheIndre-et-LoireLoir-et-CherMorbihan
In blue, the communes declared for this flood: this blue is not the water. In white, the water detected by radar (Copernicus GFM, Sentinel-1). In coral, the Natura 2000 sites and those under regulatory protection, in bright coral their part within that area. Hover over a département to read its name. Map: Animalert, from GASPAR (Géorisques), Copernicus EMS, Global Flood Monitoring (© European Union) and IGN ADMIN EXPRESS. Contains modified Copernicus Emergency Management Service information (2026)

  • 32,249 hectares of water detected by radar (Copernicus GFM, Sentinel-1)

  • 26,648 hectares in Natura 2000 or under regulatory protection

    83% of the observed flooded area

  • 210 protected animal species recorded within reach in the ten years before the flood

  • 9 animal species threatened on the national Red List, protected or not

    birds: by their population in the flood's season
Communes declared
182
Dates per the orders
9 to 26 February 2026
Départements
Maine-et-Loire, Loire-Atlantique, Ille-et-Vilaine, Sarthe, Indre-et-Loire and 2 other départements
Flood type
river flooding, runoff or mudflow
Heaviest rainfall
39.1 mm
in one day (Morbihan, 18 February 2026), PLOERDUT station · per Météo-France
  1. 13 February 2026: 5.6 mm
  2. 14 February 2026: 12.7 mm
  3. 15 February 2026: 8.6 mm
  4. 16 February 2026: 6.4 mm
  5. 17 February 2026: 17.1 mm
  6. 18 February 2026: 39.1 mm
  7. 19 February 2026: 9.7 mm
  8. 20 February 2026: 2.8 mm
  9. 21 February 2026: 1.8 mm

62.6 mm from 16 to 18 Feb, up to the wettest day

The flood's dates

Peak discharge
4,324 m³/s
La Loire à Saumur, on 22 February 2026 · provisional Hub'Eau value, it can be revised
Extent
water detected by radar (Copernicus GFM, Sentinel-1)
32,249 ha

Protected species recorded within reach

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.

  • 1,450 species recorded within reach

  • 210 protected animal species among them and 8 protected plants

  • 9 animal species threatened on the national Red List, protected or not (vulnerable, endangered or critically endangered)

  • 163 Birds

  • 13 Mammals, bats included

  • 12 Amphibians

  • 8 Fish, molluscs and crayfish

  • 8 Reptiles

  • 6 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 within reach 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 within reach 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 "within reach or nearby".

Fish, molluscs and crayfish

For fish, national protection (order of 8 December 1988) covers their eggs and spawning grounds: several are fished legally.

Birds

The observations cover every season: a migrant bird recorded there may have been away on the day of the flood.

Mammals, bats included

  • Murin de BechsteinBechstein's Bat

    Myotis bechsteiniiRed List: near threatened
    4 observations within reach or nearby

Reptiles

Amphibians

  • Rainette verteCommon Tree Frog

    Hyla arboreaRed List: near threatened
    33 observations

  • Triton ponctuéSmooth Newt

    Lissotriton vulgarisRed List: near threatened
    7 observations

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 within reach of the flood, 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.

  • No ICPE-classified livestock farm located within the flood's reach

    Géorisques · ICPE

  • 7 livestock businesses in the SIRENE register based within the flood's reach

    SIRENE register · Insee

  • No veterinary practice based within the flood's reach

    SIRENE register · Insee

  • No animal protection association based within the flood's reach

    National register of associations

  • No wildlife association based within the flood's reach

    National register of associations

Of the 7 livestock businesses in the SIRENE register: 5 cattle, sheep, goat or pig farms and 2 farms of other animals.

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. Associations are counted at their declared address: an association or a care centre based outside the area can work across all of it.

Protected areas within reach

Area of each site within reach of the flood, and the share of the site it represents. Natura 2000 and regulatory protection first, then the ZNIEFF.

A marsh can be designated twice under Natura 2000, for its habitats and for its birds: when both sites carry the same name, or have the same extent and almost the same area here, they share one row. Natura 2000 areas overlap and do not add up.

The declared communes

182 communes declared a natural disaster (flood) for this flood, région by région, then département by département.

This flood's data

In every file of the dataset, this flood carries the identifier EV-20260209-20260224-49-35001. Its dates were frozen when the identifier was created and differ here from the flood's.

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 6:00

Recognised and listed

  • data.gouv.fr

    Public on data.gouv.fr on 13 October at 6:00

  • Face aux risques, agissons. Bien préparés, bien protégés.

    A project labelled by the French StateNational Resilience Day 2026 (Journée nationale de la résilience)

  • GBIF

    Registered with GBIFDerived dataset, DOI 10.15468/dd.ta4vkx