02/06/2024
Common Causes of Blocked Storm Drains and How to Prevent Them
Blocked storm drains are a leading cause of localized flooding and drainage failures. Understanding the most common causes of these blockages makes it easier to prevent costly damage and maintenance issues.
Organic debris is one of the primary causes of blocked drains. Leaves, grass clippings, branches, and mulch are easily washed into storm drains during rainstorms, particularly during fall and spring when debris levels are highest.
Trash and litter are another major contributor. Plastic bags, bottles, food containers, and packaging often collect near curbs and parking lots. When it rains, these items are swept into storm drains where they can lodge in pipes and restrict water flow.
Sediment buildup is a less visible but equally serious issue. Dirt, sand, and gravel from construction sites or eroding landscapes gradually accumulate inside drains. Over time, this sediment reduces pipe capacity and increases the likelihood of flooding during storms.
Construction activity significantly increases the risk of drain blockages. Exposed soil and loose materials can easily enter storm drains if proper controls are not in place.
Preventing blocked storm drains requires a proactive approach. Regular inspections, debris removal, and surface cleanup reduce the amount of material available to enter drains. Installing debris caps adds an extra layer of protection by stopping debris before it reaches underground pipes.