|A blocked catch basin|
“Citizens can help prevent street pooling by clearing ice and compacted snow away from storm drain when the weather turns warmer,” says John Headley, leader Asset Assessment with Water Services. “Citizens can, if safe to do so, clear the channel along the gutter so that the snowmelt can drain into the catch basin.” At times, street debris or debris from wind, rain or hail storms (branches, leaves etc.) may block storm drains, as well. If this debris is sitting on the surface of the drain, and it is safe to do so, it can be removed to allow for water to drain more easily.
Storm drains are the main way water gets into the underground pipe system. The metal grates that can be seen at the edge of the road are only a portion of the structure which is primarily under ground. Under the grates is a barrel that collects the water. The barrel is attached to a pipe that allows the water to be whisked away and eventually deposited in the river.
In many newer communities, The City has installed inlet control devices in the storm drain to control water drainage. Known as ICD’s , they are designed to keep water on the road for at least two hours, or until the system can accept the extra water. While this prevents the storm system from being overwhelmed, it may result in some water pooling on a street. This water will eventually drain once water volumes lower.
For more information on The City’s storm drain system, visit Calgary.ca/stormdrains.