Your catch basin plays several roles in ensuring that your asphalt and property are protected.
It literally catches and prevents contaminants and debris from entering your drainage system.
Without a catch basin, debris like leaves, rocks, plastic, etc. could enter your drainage system and clog it, which could lead to damaging flooding.
Your catch basin drain helps to collect excess water from your property.
This collection prevents excess water from pooling in depressions in your lot. Water pooling on asphalt can lead to deterioration.
It is not uncommon for the importance of catch basins to be overlooked, and often it is not until it becomes apparent that there is a problem (excess pooling in your lot or flooding) that their significance is realized. The most common sign of a failing catch basin drain is a large amount of pooling throughout your parking lot. Pooling water is detrimental to your asphalt surface. Water will cause small cracks in your asphalt, that turn into bigger deficits the longer and more often they are exposed to water. Because of this, maintaining and repairing your basin drain (to avoid this damaging pooling) is extremely important.