The rise in water levels will continue, as a new rainy front unfolds on Monday on Ile-et-Vilaine. It should generate new rainy accumulations. Unfortunately, the flood peak has not yet been reached. The decline will be slow and will probably not start before Wednesday.
General situation : This Monday, the ‘Herminia’ depression brings strong west to southwest winds on the Atlantic coast. They will raise powerful waves on the Atlantic Ocean, which will hit the coast of Brittany. These sea conditions continue and also concern the coasts of Pays de la Loire for Tuesday. From Monday afternoon until Monday night, further strengthening of the wind is expected. In particular, wind gusts of 80 to 100 km/h are expected inland, and up to 120 km/h occasionally on the coasts.
Of 20 to 40 mm of precipitation is expected in Rennesthe equivalent of 15 days of rain in 24 hours, and 40 to 50 mm in Redon and the Brocéliande region, with significant risks of falling trees. The “Vilaine and coastal Breton” flood forecasting service has placed the Seiche, Vilaine upstream and median sections in a state of level vigilance. ROUGE for flood risk (level 4 on a scale of 4) Monday January 27, 2025. The Vilaine aval and the Oust are kept on ORANGE vigilance.
Level of risk on the Bretillian watercourses:
- RED: the Meu, the Ille-l’Illet, the Seiche, the Vilaine upstream and median
- ORANGE: the Vilaine downstream and the Oust
Very difficult traffic
Given the weather forecast, traffic conditions on Monday January 27, 2025 will prove very difficult from the early hours of the morning. Many roads in Ille-et-Vilaine, particularly around Rennes, will be cut and diverted. Likewise, the RN24 was diverted in the direction of Rennes Lorient near Mordelles, during the day on Sunday before only one lane was reopened at the end of the day. In the other direction, the situation is also uncertain since the left lane, now restored, had to be neutralized for part of last night.
Address from Nathalie Appéré, Mayor of Rennes, to fellow citizens
« I express all my support to the people of Rennes who saw their homes devastated by the joint rise of Ille and Vilaine this weekend. The crisis unit of the City of Rennes has been open since Saturday afternoon. We are mobilized every minute to organize the best possible aid for the population affected by the flooding caused by the floods. Unfortunately the flood peak has not yet been reached. A new rainy episode is forecast for tonight and everyone is called upon to exercise the greatest vigilance in the sectors concerned. The decline will be slow and will probably not start before Wednesday. We must now plan for what comes next. This is why we will launch an appeal for solidarity to support and help the victims in cleaning their homes.«
Call for solidarity
Many homes are affected by flooding. In order to provide concrete support to affected residents after the recession, the City of Rennes is launching an appeal for citizen solidarity. We invite all people wishing to help clean affected homes to register online on the Fabrique Citoyenne website. This approach will make it possible to coordinate actions with municipal services and first aid associations to lend a helping hand to the people of Rennes affected by the floods. Information from Monday on registration procedures.
Nurseries and schools
-An inspection tour is carried out on all the equipment. No alerts have been reported at this stage. If a problem is detected, a specific communication will be immediately sent to the parents of children in the schools or nurseries concerned.
FLOODS in Rennes: roads impassable for STAR buses. Due to flooding, several roads are blocked to traffic: line 55 has a terminus in Mordelles; lines C1 and 12 do not serve the Cimetière du Nord and Saint-Martin stops; line 32: the Volney, Motte Brûlon, Kerfleury stops are not served; Lines 51 and 71: the Betton valley, Enseigne abbaye, Housset, Marronniers and Haye Renaud gare stops are not served
The City of Rennes has activated its Municipal municipal backup plan on Saturday January 25 at 5 p.m. and a crisis unit, under the authority of the Mayor of Rennes, is kept informed in real time of developments in the situation to make the necessary decisions. An evacuation order was issued relating to the street Jean Claude Camors and the paths of Doctor Roger Maruel, Camille Godet and Alphonse Jarry. Residents must leave their homes, choosing accommodation with relatives.
Residents are recommended to maintain a high level of vigilance and to stay away from areas flooded by river flooding.
- Keep up-to-date on the evolution of rising water levels and the level of vigilance, by consulting the press and the City’s social networks.
- Do not drive onto flooded roads, even slightly, either by car or on foot.
- Respect the instructions of the authorities and emergency services.
- Avoid traveling as much as possible.
If you notice rising water levels near your home:
- Cut off your networks (electricity, water, gas, etc.),
- Move your vehicle(s) away from the flood zone,
- Close doors, windows and vents
- Elevate household appliances and toxic products.
- Do not go into underground car parks, basements and cellars.
Information will be published throughout the day on Sunday January 26, depending on the evolution of the situation.
In case of emergency or danger, contact the firefighters on 18 or 112 from a mobile phone.
The City of Rennes provides telephone reception on 02 23 62 10 10.
If necessary, two reception centers have been opened by the City of Rennes in conjunction with the Red Cross:
Constant-Véron Gymnase, 1 rue Constant-Véron (see on a map)
Jean Prouff, Esplanade Charles de Gaulle, 4th floor of the Cité Internationale Paul Ricoeur
Teams from the municipal police, the Red Cross, agents and elected officials from the city are on site to support this evacuation.
Photos: Clara Languille and Rennes metropolis
