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Réalisation d’études de restauration de la continuité écologique et réduction de la vulnérabilité aux inondations sur les bassins versants de la Sélune et de la Sée

DeadlineMay 18, 2026 at 10:00 AMClosed 58 days ago

AI summary

This tender concerns studies to restore ecological continuity and reduce flood vulnerability on the Sélune and Sée river basins. The work involves assessing current conditions and proposing nature-based solutions to remove barriers to fish migration, restore sediment transport, improve water quality, and mitigate flood risk while considering urban and agricultural contexts.

#ecological restoration#river management#flood mitigation#water quality#normandy#nature-based solutions#environmental consulting
Fit for

Environmental engineering or water resources consultancy firms with proven experience in ecological restoration, river management, and flood risk assessment are sought.

Key requirements

Suppliers must demonstrate expertise in river morphodynamics, flood genesis, sediment and fish continuity, and aquatic ecosystem quality. They must conduct feasibility analysis from financial, technical, and sociological perspectives and deliver a prioritized, costed action plan.

Frequently asked questions

  • What is this tender about?

    This tender concerns studies to restore ecological continuity and reduce flood vulnerability on the Sélune and Sée river basins. The work involves assessing current conditions and proposing nature-based solutions to remove barriers to fish migration, restore sediment transport, improve water quality, and mitigate flood risk while considering urban and agricultural contexts.

  • What are the requirements for suppliers?

    Suppliers must demonstrate expertise in river morphodynamics, flood genesis, sediment and fish continuity, and aquatic ecosystem quality. They must conduct feasibility analysis from financial, technical, and sociological perspectives and deliver a prioritized, costed action plan.

  • What type of company should bid?

    Environmental engineering or water resources consultancy firms with proven experience in ecological restoration, river management, and flood risk assessment are sought.

  • Who is the buyer?

    The buyer is Communauté d'Agglomération Mont Saint-Michel Normandie.

  • When does this tender close?

    Submissions close on May 18, 2026.

  • What is the estimated value?

    The estimated value is 500,753 EUR.

L’objectif de la mission consiste à établir un état des lieux des secteurs identifiés puis de proposer un ensemble de mesures permettant le rétablissement de la continuité écologique (lots 1,2,3 et 4) et la réduction de l’exposition au risque d’inondation (lot 4) en privilégiant des solutions fondées sur la nature. L’expertise de l’influence des ouvrages sur les points suivants est un axe majeur de cette étude : - la morphodynamique de la rivière en milieu urbain ou agricole, - la genèse des crues et le soutien d’étiage (relation nappe alluviale / cours d’eau), - la continuité sédimentaire et piscicole, - la qualité des eaux et des milieux aquatiques, Le prestataire devra considérer les ouvrages à deux niveaux, individuellement et globalement dans l’ensemble du système rivière. Cette analyse devra intégrer la faisabilité des actions d’un point de vue financier, technique et sociologique afin d’aboutir à un plan d’actions, chiffré et hiérarchisé.

Buyer
Communauté d'Agglomération Mont Saint-Michel Normandie
Buyer ID: 20006942500011·Le Président
1, rue Général Ruel, 50305, Avranches Cédex
+33 233896700commandepublique@msm-normandie.frhttps://www.msm-normandie.fr/
Body responsible for review procedures
Tribunal Administratif de Caen
Buyer ID: 17140005400010
3, rue Arthur le Duc, 14050, Caen Cédex
+33 231707272greffe.ta-caen@juradm.frhttps://caen.tribunal-administratif.fr/
Other organization
DREETS des Pays de la Loire
Buyer ID: 13002928300012
22, mail Pable Picasso, 44042, Nantes Cédex 1
+33 253467983paysdl.ccira@direccte.gouv.fr

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