Gairdíní Uisce Báistí an Chorráin
Project Background
The Crescent/Sea Road Junction Upgrade in Galway City integrates rainwater gardens as a key feature to address stormwater management. The City’s first Sustainable Urban Drainage System (SUDS) was designed to enhance biodiversity, improve the public realm and reduce pressure on the city’s stormwater system, all while supporting safer, more accessible streets for pedestrians and cyclists.
Implementation
Following a successful Part 8 Planning process and support from local councillors, along with the preparation of two screening reports, the project commenced in October 2024, with the rainwater gardens being implemented early to facilitate plant establishment. During recent site visits, the establishment of the rainwater gardens was confirmed along with their integration into traffic calming measures.
Project Background
The Crescent/Sea Road Junction Upgrade in Galway City integrates rainwater gardens as a key feature to address stormwater management. The City’s first Sustainable Urban Drainage System (SUDS) was designed to enhance biodiversity, improve the public realm and reduce pressure on the city’s stormwater system, all while supporting safer, more accessible streets for pedestrians and cyclists.
Implementation
Following a successful Part 8 Planning process and support from local councillors, along with the preparation of two screening reports, the project commenced in October 2024, with the rainwater gardens being implemented early to facilitate plant establishment. During recent site visits, the establishment of the rainwater gardens was confirmed along with their integration into traffic calming measures.
Construction Phase of Rainwater Gardens on the Crescent/Sea Road Junction
Integration of Rainwater Garden into new traffic calming measures
Established Rainwater Garden at Crescent/Sea Road Junction
Outcomes and Benefits
Rainwater gardens work by intercepting and filtering surface runoff from surrounding roads and other areas. This process diverts water away from the conventional system, thereby reducing pressure on existing infrastructure, especially during periods of heavy rainfall. The planted beds also trap particulate matter and pollutants such as oils, sediments, and microplastics, improving the quality of water entering natural waterways and supporting healthier ecosystems.
In addition to their environmental function, the gardens contribute to urban cooling through evapotranspiration, provide habitats for pollinators and wildlife, and enhance the visual appeal of the junction. Their integration into the public realm demonstrates how green infrastructure can deliver multiple benefits in a compact urban setting.
Rainwater Gardens in Severe Weather Events
A Yellow Weather warning for Galway City took place on the 18th of April 2025, and the rainwater garden was observed intercepting water from the road. The water was seen settling on the surface after the prolonged rain, demonstrating its function and showcasing the impact it has on localised flooding during severe weather events.
Rainwater Garden During Yellow Weather Warning
Conclusion
The Crescent/Sea Road rainwater gardens show how nature-based solutions can tackle urban challenges while enhancing public spaces. By managing stormwater, improving water quality, and supporting biodiversity, they offer a scalable model for future projects. This initiative sets a precedent for embedding sustainable drainage systems into everyday work, building greener, more resilient communities across Galway and beyond.
Recent Photo from the Launch of The Crescent/Sea Road Junction Upgrade and Rainwater Garden Launch