Over time, channel drains can become clogged up with soil, leaves and other debris which can render the drain ineffective over time. The good thing about these types of drains is that you are able to remove the gratings and clean them yourself.
The first thing to do is to remove the grating. This can differ depending on which channel drain you have. For gratings which you would commonly find in your driveway which could be made from plastic or steel, these tend to be able to lift off without any equipment.
To do this you need to:
After you have removed the grate the best way to clean the dirt is by removing any build up of debris by hand before flushing the channel to clear the silt. If you have a plastic grating be careful so as not to blast the drains too much, a gentle pressure should clean the channels out enough to be functional.