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A major flood · 2018

Floods, Orne and 13 other départements, June 2018

OrneSeine-et-MarneYvelinesEure-et-LoirLoire-AtlantiqueVal-d'OiseEssonneSartheVal-de-MarneEureIlle-et-VilaineMayenneCalvadosSeine-Saint-Denis
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)

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

  • 235 hectares in Natura 2000 or under regulatory protection

    65% of the observed flooded area

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

Communes declared
147
Dates per the orders
11 to 12 June 2018
Départements
Orne, Seine-et-Marne, Yvelines, Eure-et-Loir, Loire-Atlantique and 9 other départements
Flood type
river flooding, runoff or mudflow, rising groundwater
Heaviest rainfall
110.4 mm
in one day (Loire-Atlantique, 11 June 2018), SOUDAN station · per Météo-France
  1. 6 June 2018: 1.5 mm
  2. 7 June 2018: 0.5 mm
  3. 8 June 2018: 0.2 mm
  4. 9 June 2018: 34.4 mm
  5. 10 June 2018: 2.5 mm
  6. 11 June 2018: 110.4 mm
  7. 12 June 2018: 3 mm
  8. 13 June 2018: 0.1 mm
  9. 14 June 2018: 1.2 mm

147.3 mm from 9 to 11 Jun, up to the wettest day

The flood's dates

Peak discharge
515 m³/s
La Seine à Alfortville - Station débitmétrique, >1997, on 12 June 2018 · per Hub'Eau
Extent
water detected by radar (Copernicus GFM, Sentinel-1)
360 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.

  • 167 species recorded within reach

  • 4 protected animal species among them and 1 protected plant

  • 4 Birds

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

  • No livestock business 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

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. A ZNIEFF is a wildlife inventory, with no regulatory protection.

The declared communes

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

Download this flood's data

In every file of the dataset, this flood carries the identifier EV-20180611-20180612-61-14283.

Download the datasetdata.gouv.fr

Recognised and listed