Crews work on cleaning up and repairing the fields at Grant Park after a rainy, muddy end to Lollapalooza. (Credit: CBS)

Updated 08/04/14 – 1:25 p.m.

CHICAGO (CBS) — Grant Park might look like a muddy mess in the wake of Lollapalooza, but the head of the non-profit that protects the city’s front yard said he’s not alarmed by how much damage was done this weekend, especially compared to the million-dollar mess three years ago.

Muddy fields have become a familiar sight the past few years after the three-day music festival, withthe combination of large crowds and rain taking a toll on the grassy fields, but the situation has been much worse before.

“It’s not nearly as bad as things were in 2011,” Grant Park Conservancy President Bob O’Neill said after surveying the damage from this year’s festival.

Though the first two-and-a-half days of Lollapalooza were dry this year, Sunday afternoon’s downpour turned mosh pits into mud bogs as thousands of revelers walked and danced on the grass.