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A major flood · 2018

Floods, Isère and 4 other départements, January 2018

IsèreSavoieHaute-SavoieLoireSaône-et-Loire
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)

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

  • 67 hectares in Natura 2000 or under regulatory protection

    36% of the observed flooded area

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

Communes declared
95
Dates per the orders
3 to 9 January 2018
Départements
Isère, Savoie, Haute-Savoie, Loire and Saône-et-Loire
Flood type
river flooding, runoff or mudflow, rising groundwater
Heaviest rainfall
120 mm
in one day (Haute-Savoie, 4 January 2018), Avoriaz station · per Météo-France
  1. 1 January 2018: no reading
  2. 2 January 2018: no reading
  3. 3 January 2018: no reading
  4. 4 January 2018: 120 mm
  5. 5 January 2018: 12 mm
  6. 6 January 2018: 0 mm
  7. 7 January 2018: 0 mm

The flood's dates

Peak discharge
700 m³/s
L'Isère au Cheylas - DREAL, on 4 January 2018 · provisional Hub'Eau value, it can be revised
Extent
water detected by radar (Copernicus GFM, Sentinel-1)
186 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.

  • 141 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

  • 2 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 2 livestock businesses in the SIRENE register: 2 cattle, sheep, goat or pig farms.

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

95 communes declared a natural disaster (flood) for this flood, département by département.

IsèreSee the 37 communes

Allemond, Avignonet, Barraux, Biviers, Château-Bernard, Clelles, Crêts en Belledonne, Froges, Goncelin, Hurtières, La Buissière, La Chapelle-du-Bard, La Flachère, La Garde, La Pierre, La Terrasse, Le Bourg-d'Oisans, Le Champ-près-Froges, Le Cheylas, Le Gua, Le Haut-Bréda, Monestier-de-Clermont, Montbonnot-Saint-Martin, Oz, Plateau-des-Petites-Roches, Saint-Ismier, Saint-Martin-de-Clelles, Saint-Martin-de-la-Cluze, Saint-Michel-les-Portes, Saint-Nazaire-les-Eymes, Saint-Paul-lès-Monestier, Saint-Vincent-de-Mercuze, Sainte-Agnès, Sainte-Marie-du-Mont, Tencin, Theys, Vif

SavoieSee the 29 communes

Aillon-le-Jeune, Barberaz, Beaufort, Césarches, Flumet, Gilly-sur-Isère, Hauteville, La Giettaz, La Léchère, La Plagne Tarentaise, Les Chavannes-en-Maurienne, Marthod, Moûtiers, Notre-Dame-de-Bellecombe, Porte-de-Savoie, Queige, Saint François Longchamp, Saint-Baldoph, Saint-Georges-d'Hurtières, Saint-Martin-sur-la-Chambre, Saint-Pierre-d'Entremont, Saint-Rémy-de-Maurienne, Saint-Vital, Sainte-Foy-Tarentaise, Ugine, Valgelon-La Rochette, Verrens-Arvey, Villard-Léger, Villard-sur-Doron

Haute-SavoieSee the 24 communes

Abondance, Cluses, Cordon, Domancy, Doussard, La Rivière-Enverse, Le Bouchet-Mont-Charvin, Les Clefs, Les Villards-sur-Thônes, Manigod, Mieussy, Passy, Saint-Ferréol, Saint-Sigismond, Sallanches, Samoëns, Serraval, Servoz, Sevrier, Taninges, Thônes, Thyez, Val de Chaise, Verchaix

LoireSee the 4 communes

Grézolles, Saint-Germain-Laval, Saint-Marcel-d'Urfé, Saint-Martin-la-Sauveté

Saône-et-LoireSee the commune

Mesvres

Download this flood's data

In every file of the dataset, this flood carries the identifier EV-20180103-20180105-73. Its dates were frozen when the identifier was created and differ here from the flood's.

Download the datasetdata.gouv.fr

Recognised and listed