Instead of letting water from your rooftop or driveway go straight into the storm drain, you can intercept your water and direct it into gardens or woodlands using swales and berms.   Swales are depressions that accept and infiltrate stormwater runoff, or direct it to a vegetated area such as a rain garden, where it can be absorbed.   Berms are small mounds of earth or rock  which keep water from flowing in a certain direction.

Direct driveway water into a planted area, rather than letting it run into the street.

Don’t let your downspouts go underground to the storm drain.  Divert them into a rain barrel or a rain garden.