Drainage Swales - Commercial and Multi-family
Drainage swales are shallow-sided, sloped channels intended for the conveyance of surface runoff. They are located between or around buildings and are graded to intercept and convey surface runoff to the nearest on-site catchbasin, thus preventing lot-to-lot drainage.
Minimum Swale Slope Requirements
The minimum slope for a swale depends on the surface.
- Grass drainage swale: 1.5%
- Concrete drainage swale: 0.75%
For other requirements for swales, refer to the lot grading drawings page.
Example Swales
-
Graded to catchbasin -
Grass Swale -
Internal Swale -
Concrete Swale -
On-site concrete swale
For More Information
Drainage Planning and Engineering
5th Floor, Century Place
9803 - 102A Avenue NW
Edmonton, AB
T5J 3A3
| Telephone | 311 or 780-496-5576 |
|---|---|
| Fax | 780-496-2865 |
| lot.grading@edmonton.ca |
