Project Clermont-Ferrand, France

Bassin des Vergnes

Realisation of a collection pond for excessive rainwater in Clermont-Ferrand (France).

Technical specifications

Secant pile wall

  • 132 no. cased auger piles
  • using twin rotary-drive system
  • Ø 800 mm
  • 17 m long


Clermont sewer collection system

The region of Clermont-Ferrand is building 6 collection ponds in order to avoid overflows of untreated water from the sewerage network into natural environments in the case of heavy rains.

The "Bassin des Vergnes" is the first of those ponds.

It's a cylindrical basin of 25 m diameter and 11 m depth, and it has a capacity of 2.200 m³.

Project details

Project name

Bassin des Vergnes


Water Treatment


Pile wall, Cased auger pile

Contract type



Clermont-Ferrand, France


Clermont Communauté

Building Period

2016 - 2017

Total value

€ 500 000

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