La gestion intégrée des eaux pluviales - AQUA-ADD Interreg IVC ...

8
Nature
in the city
SHINING EXAMPLES,
SUPPORTING NATURE
AND BIODIVERSITY
LYON - PORTE DES ALPES
EXEMPLARY TECHNICAL CONSULTATION
The site of Porte des Alpes at Saint-Priest is Lyon’s best
example of integrated rainwater management. It also testifies
to the benefit of the approach of technical consultation
and joint project management. The challenges of rainwater
management at source were taken into account in the project
from the outset. Landscape architects, urban designers
and water experts worked together from the initial sketch
schemes of the development to identify the water routes
to be respected and the best site for storing run-off water,
including in situations of extreme rainfall. In the end,
the solution selected was a cascade organisation, using
the techniques of swales, drainage trenches, water basins
and percolation basins. The final design called for close
consultation with technicians from the Highways and Parks
Departments, thereby taking account of their operating
constraints from the start of the project.
This quality multi-skilled work was possible thanks to a project
management organisation steered by the Urban Design
Department. Being dynamic and involving the participation
of everyone concerned, this organisation gave rise to an
extremely high-quality project, respected by all the urban
services and held in high regard by the people of Grand Lyon.
Close to 20 years after these design phases, the partnership
aspect persists in the shared management of spaces between
the departments and with the fishing and nature protection
associations. There will be consultation actions with the
neighbouring shopping centre to align the environmental
management practices of the 2 sites and to reduce the overall
impact on the natural environment.