Baffle Boxes

Baffle boxes are square chambers connected to a storm drain with partitions dividing the box into sections.

Water flows into the first section of the box where most pollutants settle out of the water. As water rises above the next partition, it overflows into the second section to allow further settling of pollutants. After detention in multiple chambers in which varying levels of pollutants have been trapped, water overflows the baffle box into the stormwater pipe.  Most baffle boxes are buried in-line with the storm drain system, leaving only manhole covers visible from the ground surface.  Manholes provide access for regular maintenance.  Brevard County Road & Bridge Department uses a vac-truck to clean out the baffle boxes.