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Feature story
Take a close look at the new parking lot at the Carlingwood branch of the Ottawa Public Library. What you see looks like normal, everyday interlocking brick – but these are actually permeable pavers.
With regular pavers, when there’s rain, the water that lands on a parking lot flows off to the side, picking up pollutants as it flows, and then directly into a stormwater sewer. This does not happen with permeable pavers. Instead, when there’s rain, the water goes straight down through the spaces between the pavers and into extra layers of gravel and soil beneath the surface. Yes, some of it will still end up in the storm sewer, but only after a great deal of it has been soaked up by the soil.
The same concept applies to melting snow. When it melts, it will follow the same path as rain. Less surface water means parking lots will dry faster and have less ice in general.
What is the benefit of a permeable surface? Well, if less water goes into the storm sewer, and it gets there more slowly , it helps reduce the risks of habitat degradation, flooding and erosion within our local creeks and rivers.
Rainwater managed in this way also helps reduce contaminants in our creeks and streams, which ultimately leads to a cleaner Ottawa River and fewer beach closures. Of course, the Ottawa River is where we get our drinking water.
The parking lot at Carlingwood is the first of its kind at a City facility. It’s a pilot project and it’s part of the City’s overall effort to manage rainwater in older urban areas of the City that were built without stormwater management in a way that will reduce the risk of flooding and treat runoff. There are large projects and there are small ones, including:
There is no one-size-fits-all approach to managing rainwater in Ottawa. And it’s not possible to create an infrastructure that will eliminate the risk of urban flooding. Record rainfalls falling in a record amount of time will always be a problem. But, as we rebuild roads and City facilities, over time we can include ways to reduce the impact.
For more information on City programs and services, visit ottawa.ca, call 3-1-1 (TTY: 613-580-2401) or 613-580-2400 to contact the City using Canada Video Relay Service. You can also connect with us through Facebook, X (formerly Twitter) and Instagram.
查看原文...
Take a close look at the new parking lot at the Carlingwood branch of the Ottawa Public Library. What you see looks like normal, everyday interlocking brick – but these are actually permeable pavers.
With regular pavers, when there’s rain, the water that lands on a parking lot flows off to the side, picking up pollutants as it flows, and then directly into a stormwater sewer. This does not happen with permeable pavers. Instead, when there’s rain, the water goes straight down through the spaces between the pavers and into extra layers of gravel and soil beneath the surface. Yes, some of it will still end up in the storm sewer, but only after a great deal of it has been soaked up by the soil.
The same concept applies to melting snow. When it melts, it will follow the same path as rain. Less surface water means parking lots will dry faster and have less ice in general.
What is the benefit of a permeable surface? Well, if less water goes into the storm sewer, and it gets there more slowly , it helps reduce the risks of habitat degradation, flooding and erosion within our local creeks and rivers.
Rainwater managed in this way also helps reduce contaminants in our creeks and streams, which ultimately leads to a cleaner Ottawa River and fewer beach closures. Of course, the Ottawa River is where we get our drinking water.
The parking lot at Carlingwood is the first of its kind at a City facility. It’s a pilot project and it’s part of the City’s overall effort to manage rainwater in older urban areas of the City that were built without stormwater management in a way that will reduce the risk of flooding and treat runoff. There are large projects and there are small ones, including:
- The new Pinecrest Creek Stormwater Management Pond.
- Rain gardens built along Sunnyside Avenue, Stewart Street and Hemmingwood Way.
- A bioretention median at Dovercourt Community Centre, scheduled for construction in 2025.
- Soil cells installed along Glebe Avenue at Bank Street that will support healthy urban trees while collecting and treating road runoff.
- Rain Ready Ottawa, which offers rebates to residents who install rainwater management on their own properties.
- The Combined Sewage Storage Tunnel.
There is no one-size-fits-all approach to managing rainwater in Ottawa. And it’s not possible to create an infrastructure that will eliminate the risk of urban flooding. Record rainfalls falling in a record amount of time will always be a problem. But, as we rebuild roads and City facilities, over time we can include ways to reduce the impact.
For more information on City programs and services, visit ottawa.ca, call 3-1-1 (TTY: 613-580-2401) or 613-580-2400 to contact the City using Canada Video Relay Service. You can also connect with us through Facebook, X (formerly Twitter) and Instagram.
查看原文...
