Enclosure Drainage at Sept-Iles Airport, Quebec

The Sept-Iles Airport stormwater drainage system on the city side is provided by surface and subsurface drainage.  Although the airport is located in a geological zone where the soils are mostly composed of sand with a good infiltration capacity, several drainage problems are still raised by users.

For over twenty years, various studies and analyses of the drainage system have been conducted and several corrective works have been implemented. However, a 2015 study conducted by SPAC shows that the existing drainage system cannot provide effective drainage.  Under summer conditions, water accumulations quickly resolve as the soil in place has a very high infiltration capacity. However, in spring conditions, when the ground is frozen and snowmelt saturates the soil, water accumulations are more pronounced and persistent in the city side ditches, which can lead to water accumulation on a section of the apron representing a safety issue.

The project consists of correcting the surface drainage and the underground drainage network of the Sept-Îles airport. The purpose of the project is to replace the 375mm and 450mm underground storm sewer pipe located on the west side, excavate a ditch located on the east side, replace the culverts located there, and re-profile the existing ditch.

The machinery used for this project is excavators to excavate and replace the storm sewer pipes and culverts.


Latest update

August 04, 2022 - The assessment decision statement has been issued to the proponent.



Environmental and Aboriginal affairs - Québec region
Email: aea-eaa@tc.gc.ca

  • Location

    • Sept-Iles Airport (Quebec)
  • Nature of Activity

    • Airport and Airfields
  • Assessment Status

  • Start Date

  • Proponent

    Transport Canada
  • Authorities

    • Transport Canada
  • Assessment Type

    Project on federal lands
  • Reference Number


This map is for illustrative purposes. The markers represent the approximate locations based on available data. More than one marker may be identified for a given assessment.


Nearby assessments

...within 200 kilometres
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