With a rain garden, runoff from roofs and other impermeable areas around the property are directed to a sunken area where water can pond and move through a mix of mulch and constructed organic soils planted with appropriate native species. Rain gardens allow natural bio-remediation processes of microorganisms, plants, and soils to take place, which prevents contaminants making it to stream and shore habitats.
The group 12,000 Rain Gardens in Puget Sound shares a wealth of knowledge on building rain gardens that is specifically relevant to the Pacific Northwest. See their comprehensive guide on building a rain garden, and watch their video demonstration linked below.
Also check out the Rain Gardens for Headwaters: Online Design Symposium hosted by Kyle Armstrong with Peninsula Streams & Shorelines. Kyle is joined by speakers Deborah Jones, Cougar Creek Streamkeepers, Kristen Miskelly, Satinflower Nurseries, Brianne Tenk, Stormwater Management Specialist, City of Victoria, and Scott Murdoch, Landscape Architect, Murdoch De Greeff Inc. You will learn about lessons learned and “do’s and don’ts” from constructing rain garden designs, the importance and benefits of utilizing native plants in rain gardens, green stormwater infrastructure, and much more!
As mentioned in the talk by Brianne Tenk, The City of Victoria has an incentive program for managing rainwater sustainably, such as receiving credits and rebates for incorporating pervious pavers, rain barrels and rain gardens on your properties! To learn more about the City of Victoria’s Rainwater Rewards Program for rainwater harvesting and management, see here and here!
Check out our partner Peninsula Streams Society's blog about three Rain Garden Demonstration Sites they have built at urban schools in the Capital Region. This project has built storm and drought resilience into local watersheds! Within the post are a number of helpful and informative links.
For professional assistance with designing and building a rain garden, search for landscape architect firms through the BC Society of Landscape Architects.
Photo credit: Maria Cantanzaro and Paul de Greeff