Cleaning up after an estimated crowd of 200,000 can be a big job, so dozens of volunteers came out this morning to help clean Warner Park following last night's Rhythm and Booms celebration.
Some went out onto the lagoon in canoes to clean debris left from the fireworks show that capped the event.
Those at the show may have noticed small fires near the fireworks site.
The Madison fire department says such fires are expected every year.
One organizer said they saw a small amount of smoke in the same area early this morning.
"There were a few small smoldering areas in the marsh back here," said Deb McCue. "One of our volunteer groups has actually taken buckets with them and they're going to douse the smokey areas from buckets of water from the lagoon."
The Madison Fire Department says they were out at warner park several times today, checking the smoldering areas.
They say the smoky spots are in an area where it will not spread, but could continue to smoke for up to 48 hours.
Madison police say they made no arrests at Rhythm and Booms this year.