Stream Daylighting Project La Rosa Gardens - From Vision to Reality
Stormwater Conference
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La Rosa Reserve Stream Daylighting project involved the design, consenting, and construction of 200 meters of watercourse that had previously flowed underground in 1100-1350mm diameter pipes. The project was the first dedicated stream daylighting project in Auckland, and one of the mayor’s 100 projects set up to make Auckland “the most liveable city in the world”. The design and delivery of the project was undertaken in one year with the help of multiple stakeholders.
Calculated peak flows of 14m³/s were expected within an average stream channel slope of more than 2 percent through highly erodible clay. This demanded fail-safe measures to control erosion, while still delivering on the broader project objectives for landscape amenity, natural character, and enhanced ecology. Construction was also carried out through winter which created many potential issues during construction.
This paper documents the issues and challenges that were overcome in order to complete this project from concept design to physical works.